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41 episodes
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Date created
2024/05/07
Latest episode
2026/08/29
Average duration
65 min.
Release period
28 days
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The Neil Ashton Podcast explores artificial intelligence, computational engineering, computational fluid dynamics, scientific machine learning, and high-performance computing. Hosted by Neil Ashton, Vice President of Computational Engineering at Mistral, it features conversations with leading researchers and engineers about technology, careers, and scientific discovery.
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Check latest episodes from The Neil Ashton Podcast podcast
S4 EP7 - Should You Still Study Engineering in the Age of AI?
2026/08/29
Should you still study engineering when AI can already write code, analyse data and automate parts of an engineer's job?
In this solo episode, Neil Ashton gives his view on engineering education and careers in the age of AI. His answer is yes—but the skill set is changing. Neil explains why engineering fundamentals still matter, where AI can act as an enabler, what students and early-career engineers should learn now, and why soft skills, projects and internships may become even more important.
Topics include:
- Why demand for engineers is likely to remain strong
- The engineering tasks most likely to change
- AI as an enabler for coding, CAD, CAE and automation
- Why domain knowledge is still essential for checking AI's work
- What practical AI fluency means beyond using a chat interface
- Advice for undergraduate, postgraduate and PhD students
- How projects, internships and soft skills can help you stand out
Podcast archive: https://neilashton.co.uk/podcasts/
Chapters:
00:00 Podcast intro
00:39 The career question in the age of AI
03:20 Why engineering demand is still growing
04:43 Which engineering tasks AI will change
05:21 AI as an engineering enabler
09:18 Why fundamentals and domain expertise still matter
11:59 AI fluency and the hiring market
16:41 Advice for students and researchers
20:05 What engineers should study now
22:11 Standing out: soft skills, projects and internships
25:41 Is engineering still worth it?
Resource mentioned:
- World Economic Forum, Future of Jobs Report 2025 — Skills outlook: https://www.weforum.org/publications/the-future-of-jobs-report-2025/in-full/3-skills-outlook/
Please note that this episode expresses my personal opinion and does not represent the views of NVIDIA.
S4 EP6 - Daniel Mira on Hydrogen Combustion Modelling and Future Propulsion
2026/08/11
Hydrogen combustion, high-fidelity CFD and the future of aircraft propulsion are the focus of this conversation with Dr. Daniel Mira, Head of the Propulsion Technologies Group at the Barcelona Supercomputing Center. Neil and Dani discuss why reacting flows are so difficult to simulate, how hydrogen changes combustion and aircraft design, the limits of RANS, LES and DNS, GPU-native solvers, coding agents and AI surrogate models.
Full episode, corrected transcript and resources:
https://neilashton.co.uk/podcasts/s4-e6-daniel-mira-on-hydrogen-combustion-modelling-and-future-propulsion/
Topics
Why reacting flows are so computationally difficult
Hydrogen versus hydrocarbon combustion
When hydrogen could reach commercial aviation
How engines and aircraft must be redesigned
Industrial trust in high-fidelity combustion CFD
RANS, LES and DNS for reacting flows
Chemistry, load balancing and computational cost
Wall modelling in combustion LES
GPU acceleration and solver redesign
Coding agents for scientific software
AI surrogate models and digital engineering workflows
Selected resources
Daniel Mira and the Propulsion Technologies Group
https://ptg.bsc.es/?p=44
Propulsion Technologies Group — research lines
https://ptg.bsc.es/research-lines/
BSC — Combustion research
https://www.bsc.es/research-development/research-areas/engineering-simulations/combustion
Center of Excellence in Combustion (CoEC)
https://coec-project.eu/
High-fidelity simulations of the mixing and combustion of a technically premixed hydrogen flame
https://upcommons.upc.edu/entities/publication/08a27c10-cb13-4357-a3ab-8e9ec1d706cc
Chapters
00:00 Podcast intro
00:39 Introducing Daniel Mira
03:00 Conversation begins
04:55 Why combustion CFD is so hard
10:23 Daniel’s path into hydrogen and jet-engine combustion
12:48 Hydrogen versus hydrocarbon combustion
17:58 Industrial adoption of hydrogen
20:54 Gas turbines, aviation and fuel infrastructure
25:35 How jet engines must change
30:43 Redesigning the whole aircraft
34:46 What will trigger commercial adoption?
37:27 Why aerospace projects take a decade
42:14 RANS, LES and DNS for reacting flows
44:31 Replacing expensive tests with high-fidelity CFD
46:01 The biggest accuracy gaps in combustion LES
49:26 Where the computational cost goes
52:06 Chemistry, species and source-term bottlenecks
55:35 Wall modelling in combustion LES
59:49 GPUs, algorithms and solver redesign
01:08:52 Can coding agents accelerate combustion CFD?
01:12:27 AI surrogate models for combustion
01:24:20 Closing thoughts
S4 EP5 - Prof. Nils Thuerey on Differentiable Physics and Foundation Models
2026/07/23
Differentiable physics, neural emulators and foundation models for PDEs are the focus of this conversation with Professor Nils Thuerey, head of the Physics-based Simulation group at TUM. Neil and Nils discuss PhiFlow, PICT, Tadpole, scalable 3D transformers, online synthetic data, open datasets, world models and agents that call physics simulators.
Full episode, corrected transcript and resources:
https://neilashton.co.uk/podcasts/s4-e5-prof-nils-thuerey-on-differentiable-physics-and-foundation-models/
Topics
Differentiable physics and physics-based deep learning
PhiFlow and differentiable simulation across ML frameworks
When neural emulators can outperform their training data
Foundation models for PDEs and synthetic online training
Scalable 3D transformers and high-resolution simulations
LES, temporal data and correlated CFD datasets
Open-source tools, startups and physics-aware world models
AI agents that call physics simulators
Papers
Neural Emulator Superiority: When Machine Learning for PDEs Surpasses its Training Data
https://arxiv.org/abs/2510.23111
Tadpole: Autoencoders as Foundation Models for 3D PDEs with Online Learning
https://arxiv.org/abs/2605.15284
P3D: Scalable Neural Surrogates for High-Resolution 3D Physics Simulations with Global Context
https://arxiv.org/abs/2509.10186
PICT — A Differentiable, GPU-Accelerated Multi-Block PISO Solver for Simulation-Coupled Learning Tasks in Fluid Dynamics
https://arxiv.org/abs/2505.16992
PhiFlow: Differentiable Simulations for PyTorch, TensorFlow and JAX
https://proceedings.mlr.press/v235/holl24a.html
Physics-based Deep Learning
https://arxiv.org/abs/2109.05237
Learning to Control PDEs with Differentiable Physics
https://arxiv.org/abs/2001.07457
Solver-in-the-Loop: Learning from Differentiable Physics to Interact with Iterative PDE-Solvers
https://arxiv.org/abs/2007.00016
tempoGAN: A Temporally Coherent, Volumetric GAN for Super-resolution Fluid Flow
https://arxiv.org/abs/1801.09710
Deep Learning Methods for Reynolds-Averaged Navier-Stokes Simulations of Airfoil Flows
https://arxiv.org/abs/1810.08217
WeatherBench: A Benchmark Dataset for Data-Driven Weather Forecasting
https://arxiv.org/abs/2002.00469
SuperWing: A Comprehensive Transonic Wing Dataset for Data-Driven Aerodynamic Design
https://arxiv.org/abs/2512.14397
Links
Nils Thuerey and the Physics-based Simulation group
https://ge.in.tum.de/about/n-thuerey/
Chapters
00:00 Podcast intro
00:39 Introducing Prof. Nils Thuerey
04:13 Conversation begins
05:13 From Computational Numerics to Graphics and Visual Effects
07:17 Physics-Based Deep Learning Before ChatGPT
10:01 CNNs, Graphics and the Move into Engineering Applications
12:37 PhiFlow and Differentiable Physics
14:13 Can Neural Emulators Surpass Their Training Data?
18:00 The Promise and Limits of Foundation Models for PDEs
20:43 Tadpole and Synthetic Online Pre-Training
24:07 From Canonical PDEs to Navier-Stokes and Industrial CFD
26:35 What Do Foundation Models Actually Learn?
28:36 PDE Pre-Training vs. Millions of CFD Simulations
33:08 Scaling 3D Transformers and Training Infrastructure
35:58 Generating and Training on Data in Real Time
38:00 LES, Temporal Data and Turbulence
42:15 Overfitting and Correlated Simulation Data
44:27 Bringing Differentiable Solvers Back into the Loop
45:31 WeatherBench, APEBench and the Value of Benchmarks
47:09 SuperWing, Open Datasets and Commercial Data
51:31 Open Source, Commercial Models and a Technical Oscar
56:17 Academia, Startups and Industry
01:00:55 What Will Change Over the Next Five Years?
01:02:07 World Models and the Need for Physics
01:08:19 Agents, Tool Use and Calling Physics Simulators
01:11:22 Career Advice for AI and Simulation
01:13:54 Closing Thoughts
S4 EP4 - Prof. Paola Cinnella on AI for Science and Fluid Mechanics
2026/07/09
RANS uncertainty, data-driven turbulence modeling and AI for Science are the focus of this conversation with Professor Paola Cinnella, Professor of Fluid Mechanics at Sorbonne University and Director of SCAI. Neil and Paola discuss high-order methods, dense gases, Bayesian uncertainty, AirfRANS, surrogate modeling, scientific publishing and education in the AI era.
Full episode, corrected transcript and resources:
https://neilashton.co.uk/podcasts/s4-e4-prof-paola-cinnella-on-ai-for-science-and-fluid-mechanics/
Topics
Fluid mechanics, CFD and high-order schemes
Dense gases, real-gas effects and expansion shockwaves
Uncertainty quantification and Bayesian methods
RANS turbulence-model uncertainty
AirfRANS and CFD datasets for machine learning
Turbulence modeling vs. surrogate modeling
Scientific publishing and ML-for-CFD standards
SCAI and AI for Science
Education, ChatGPT and centaur scientists
Papers
Quantification of model uncertainty in RANS simulations: A review — Heng Xiao, Paola Cinnella
https://doi.org/10.1016/j.paerosci.2018.10.001
Discovery of Algebraic Reynolds-Stress Models Using Sparse Symbolic Regression — Martin Schmelzer, Richard P. Dwight, Paola Cinnella
https://doi.org/10.1007/s10494-019-00089-x
Bayesian estimates of parameter variability in the k-epsilon turbulence model — W.N. Edeling, P. Cinnella, R.P. Dwight, H. Bijl
https://doi.org/10.1016/j.jcp.2013.10.027
AirfRANS: High Fidelity Computational Fluid Dynamics Dataset for Approximating Reynolds-Averaged Navier-Stokes Solutions
https://arxiv.org/abs/2212.07564
Data-driven turbulence modeling — Paola Cinnella
https://arxiv.org/abs/2404.09074
Direct numerical simulations of supersonic turbulent channel flows of dense gases — Luca Sciacovelli, Paola Cinnella, Xavier Gloerfelt
https://doi.org/10.1017/jfm.2017.237
Links
Paola Cinnella named Director of SCAI
https://scai.sorbonne-universite.fr/news/paola-cinnella-new-director
SCAI
https://scai.sorbonne-universite.fr/
Paola Cinnella — HAL publications
https://cv.hal.science/paola-cinnella
Paola Cinnella — Google Scholar
https://scholar.google.com/citations?hl=fr&user=wBRA0JAAAAAJ
ERCOFTAC SIG 54 — Machine Learning for Fluid Dynamics
https://www.ercoftac.org/special_interest_groups/54-machine-learning-for-fluid-dynamics/master-of-science-internships/
Chapters
00:00 Podcast intro
00:39 Introducing Prof. Paola Cinnella
03:28 Conversation begins
03:56 How Paola Found Fluid Mechanics
07:09 Moving from Italy to France
08:37 High-Order Schemes and Compressible Flows
09:30 Building an Academic Career
12:06 Dense Gases and Uncertainty Quantification
15:16 Expansion Shockwaves and Real-Gas Effects
19:17 Returning to Paris and Academic Mobility
24:52 Academia, Passion and Persistence
27:51 Bayesian Methods and Turbulence Uncertainty
30:47 Learning Statistics Across Disciplines
33:07 LearnFluidS, AirfRANS and CFD Datasets
36:33 Skepticism and Physics in ML Turbulence Modeling
40:41 Could ML Lead to a Universal Turbulence Model?
42:59 Turbulence Models, Surrogate Models and RANS
45:03 Why LES Alone Cannot Solve Optimization
47:15 Multi-Fidelity Modeling
49:08 What Computers & Fluids Looks for in ML-for-CFD Papers
54:05 CFD Metrics vs. Machine-Learning Metrics
57:13 Overselling, Publication Pressure and Quality
01:02:22 SCAI and AI for Science
01:06:07 Cross-Disciplinary AI for Science
01:09:26 Education in the AI Era
01:12:44 Critical Thinking and AI Outputs
01:18:15 AI as a Companion, Not a Replacement
01:21:42 AlphaFold and the Future of Discovery
01:23:43 Training Centaur Scientists
01:25:11 Closing Thoughts
S4 EP3 - Prof. Ricardo Vinuesa on AI for Fluid Mechanics
2026/06/25
Foundation models, explainable AI and autonomous discovery in fluid mechanics are the focus of this conversation with Professor Ricardo Vinuesa, Associate Chair for Research and Associate Professor of Aerospace Engineering at the University of Michigan. Neil and Ricardo discuss latent representations, turbulence, reduced-order modeling, flow control and whether AI can discover physical mechanisms that humans might miss.
Full episode, corrected transcript and resources:
https://neilashton.co.uk/podcasts/s4-e3-prof-ricardo-vinuesa-on-ai-for-fluid-mechanics/
Topics
Can fluid mechanics have a “ChatGPT moment”?
Foundation models and latent representations for turbulent flows
Explainable AI, causality and identifying the mechanisms that matter
Why classical coherent structures may tell only part of the turbulence story
Physics-informed vs purely data-driven machine learning
Reduced-order modeling, autoencoders, transformers and nonlinear compression
Deep reinforcement learning for flow control and optimization
Agentic AI and autonomous scientific discovery in PDE-governed systems
How academia, computer science and engineering education must adapt to AI
Papers
Agentic Exploration of PDE Spaces using Latent Foundation Models for Parameterized Simulations — Abhijeet Vishwasrao et al.
https://arxiv.org/abs/2604.09584
Multi-agent LLMs and latent foundation models autonomously explore flow physics in a tandem-cylinder problem.
Enhancing computational fluid dynamics with machine learning — Ricardo Vinuesa, Steven L. Brunton
https://doi.org/10.1038/s43588-022-00264-7
A roadmap for useful ML in CFD, including faster simulations, turbulence models and reduced-order models.
Identifying regions of importance in wall-bounded turbulence through explainable deep learning — Andrés Cremades et al.
https://doi.org/10.1038/s41467-024-47954-6
Explainable AI identifies flow structures that matter for prediction and control.
β-Variational autoencoders and transformers for reduced-order modelling of fluid flows — Alberto Solera-Rico et al.
https://doi.org/10.1038/s41467-024-45578-4
Disentangled latent spaces, autoencoders and transformers support interpretable reduced-order models.
Improving turbulence control through explainable deep learning — Miguel Beneitez et al.
https://arxiv.org/abs/2504.02354
Explainable AI and deep reinforcement learning target turbulence-sustaining mechanisms.
Links
VinuesaLab
https://www.vinuesalab.com/
Ricardo Vinuesa — University of Michigan Aerospace Engineering
https://aero.engin.umich.edu/people/ricardo-vinuesa/
AI and ML for Fluid Dynamics course — Ricardo Vinuesa and Sergio Hoyas
https://www.flowthermolab.com/courses/ai-ml-for-fluids/
VinuesaLab YouTube channel
https://www.youtube.com/@VinuesaLab
AI for Fluid Mechanics, Sustainability & XAI — Ricardo Vinuesa
https://www.youtube.com/watch?v=TOfwf4ffPnU
Modelling and controlling turbulent flows through deep learning — Ricardo Vinuesa
https://www.youtube.com/watch?v=0AOY_agZ8WM
Chapters
00:00 Podcast intro
03:20 The Evolution of Foundation Models in Fluid Dynamics
10:22 Understanding Explainable AI in Fluid Mechanics
15:34 Challenges in Data Fidelity for Foundation Models
20:29 Machine Learning vs. Reduced-Order Modeling
24:22 The Shift from Turbulence Modeling to Surrogate Models
29:48 Exploring Agentic Systems for Scientific Discovery
37:21 Exploring Latent Representations in Fluid Dynamics
40:40 The Role of AI in Autonomous Discovery
41:57 Bridging Fluid Mechanics and Computer Science
45:28 Data-Driven vs. Physics-Driven Models
51:34 The Role of Academia in AI and Fluid Mechanics
56:27 Optimization and Control in Machine Learning
01:00:28 The Future of AI in Fluid Dynamics: Beyond ChatGPT
S4 EP2 - Prof. Nathan Kutz on Physics-Informed AI and Data-Driven Modeling
2026/06/11
Physics-informed AI, DMD, SINDy and data-driven engineering are the focus of this conversation with Professor J. Nathan Kutz, Director of Physics-Informed AI at Autodesk. Neil and Nathan trace machine learning’s evolution in engineering, the role of physics in trustworthy models, and the future of autonomous agents, design automation and human expertise.
Full episode, corrected transcript and resources:
https://neilashton.co.uk/podcasts/s4-e2-prof-nathan-kutz-on-physics-informed-ai-and-data-driven-modeling/
Topics
History of machine learning in engineering
Dynamic Mode Decomposition (DMD) and Sparse Identification of Nonlinear Dynamics (SINDy)
Physics-informed AI and reduced-order modeling
The debate between physics-based and data-driven models
The future of autonomous agents and their impact on industry
Papers
Flower discrimination by pollinators in a dynamic chemical environment — Jeffrey A. Riffell, Eli Shlizerman, Elischa Sanders, Leif Abrell, Billie Medina, Armin J. Hinterwirth, J. Nathan Kutz
https://doi.org/10.1126/science.1251041
Nathan’s early move into neuroscience and data-driven biological modeling.
Data assimilation and discrepancy modeling with shallow recurrent decoders — Yuxuan Bao, J. Nathan Kutz
https://arxiv.org/abs/2512.01170
Using ML to close the gap between simulation and reality.
Discovering governing equations from data by sparse identification of nonlinear dynamical systems — Steven L. Brunton, Joshua L. Proctor, J. Nathan Kutz
https://doi.org/10.1073/pnas.1517384113
The foundational paper introducing SINDy.
On Dynamic Mode Decomposition: Theory and Applications — Jonathan H. Tu, Clarence W. Rowley, Dirk M. Luchtenburg, Steven L. Brunton, J. Nathan Kutz
https://doi.org/10.3934/jcd.2014.1.391
A key reference for Dynamic Mode Decomposition.
Data-driven discovery of partial differential equations — Samuel H. Rudy, Steven L. Brunton, Joshua L. Proctor, J. Nathan Kutz
https://doi.org/10.1126/sciadv.1602614
Extends equation discovery to PDEs and physical systems.
Deep learning for universal linear embeddings of nonlinear dynamics — Bethany Lusch, J. Nathan Kutz, Steven L. Brunton
https://doi.org/10.1038/s41467-018-07210-0
Connects deep learning with Koopman theory.
Articraft: An Agentic System for Scalable Articulated 3D Asset Generation — Matt Zhou, Ruining Li, Xiaoyang Lyu, Zhaomou Song, Zhening Huang, Chuanxia Zheng, Christian Rupprecht, Andrea Vedaldi, Shangzhe Wu
https://arxiv.org/abs/2605.15187
A practical example of agentic AI for engineering design.
Links
Articraft project page
https://articraft3d.github.io/
Chapters
00:00 Podcast intro
00:40 Introduction to Episode
05:00 Welcoming Prof. Kutz
10:34 The Evolution of Data-Driven Modeling
16:13 Understanding the SINDy Algorithm and Its Implications
22:14 Comparing Reduced-Order Modeling and Modern Machine Learning
28:29 The Role of Data in Machine Learning and Physics
34:23 Challenges in Extrapolation and Real-World Applications
40:46 Insights from McLaren and Team Dynamics
46:07 The Shift from Academia to Industry
48:53 Collaboration and Innovation in Engineering
51:57 The Role of Human Expertise in Design
54:45 Leveraging AI in Formula One
57:32 The Future of AI and Workforce Dynamics
59:06 Navigating Career Choices in a Changing Landscape
01:03:02 The Evolution of Thought in Engineering
01:09:06 Preparing for the Future of Technology
01:14:04 Responsible Use of AI in Engineering
S4 EP1 - Are AI Agents and Foundation Models About to Rewrite CAE?
2026/06/01
In this episode, Neil explores how agents, foundation models, and AI are set to transform the Computer-Aided Engineering (CAE) and Electronic Design Automation (EDA) landscapes. He shares a comprehensive historical perspective and predicts a near-future where AI-driven automation redefines engineering workflows, productivity, and innovation.
Main Topics:
The evolution of simulation codes from the 1960s to modern commercial software
The rise of cloud computing, GPUs, and their impact on CAE and EDA industries
The integration of AI, surrogate modeling, and foundation models into simulation workflows
The emergence of agentic AI systems capable of autonomously performing complex engineering tasks
The strategic responses of major software companies to AI and agent technologies
The potential democratization and automation of engineering design through AI agents
Critical questions on model ownership, transparency, and industry adoption
Timestamps:
00:00 - Podcast intro
00:40 - Introduction: How agents and foundation models will disrupt CAE & EDA
01:40 - Historical overview: From code writing in the 60s to commercial software
03:10 - Growth of aerospace and automotive industry codes and commercialization
04:40 - The impact of HPC, cloud computing, and hardware evolution
06:25 - Rise of cloud SaaS models and "sassification" of simulation tools
07:40 - Big tech entrance: AWS, Microsoft, and Google in CAE & EDA
09:00 - GPU acceleration: Changed landscape in past three to four years
09:10 - The role of AI startups offering surrogate models and real-time simulation
10:40 - Industry consolidation: Mergers and acquisitions among software giants
11:40 - The emergence of foundation models and surrogate systems in simulation
13:00 - The significance of agents: Combining AI, models, and automation
14:10 - Capabilities of autonomous AI agents in complex engineering workflows
15:25 - Practical use cases: Running simulations, setting up experiments, and data analysis
16:10 - Questions about model ownership, open-source codes, and licensing
16:40 - How agent-driven automation could democratize engineering expertise
19:40 - The future of AI in engineering: Collaboration, transparency, and scientific rigor
21:25 - Final thoughts: Opportunities, challenges, and the transformative potential of AI
Please note that this episode expresses my personal opinion and does not represent the views of NVIDIA.
Full episode, corrected transcript and resources:
https://neilashton.co.uk/podcasts/s4-e1-are-ai-agents-and-foundation-models-about-to-rewrite-cae/
S3 EP9 - Fluid Intelligence with Johannes Brandstetter and Siddhartha Mishra
2025/12/02
In this conversation, Neil Ashton and Prof. Siddhartha Mishra, and Prof. Johannes Brandstetter discuss their recent paper on AI foundation models in computational fluid dynamics (CFD). They explore the backgrounds of the speakers, the journey to writing the paper, the role of AI in CFD, and the challenges of scaling laws and data generation. The discussion also covers model training costs, open questions, and future directions for research in this field.
Fluid Intelligence: A Forward Look on AI Foundation Models in Computational Fluid Dynamics : https://arxiv.org/abs/2511.20455v1
Full episode, corrected transcript and resources:
https://neilashton.co.uk/podcasts/s3-e9-fluid-intelligence-with-johannes-brandstetter-and-siddhartha-mishra/
S3 EP8 - The Conference Connection (HPC, CAE, ML & Engineering)
2025/11/01
In this episode, Neil Ashton discusses various conferences and workshops in the automotive, aerospace, and machine learning fields. He highlights the importance of these events for networking, education, and staying updated with industry trends. From the SAE and AIAA events to machine learning workshops, Neil provides insights into what attendees can expect and the value of participating in these gatherings.
Full episode, corrected transcript and resources:
https://neilashton.co.uk/podcasts/s3-e8-the-conference-connection-hpc-cae-ml-and-engineering/
S3 EP7 - 5 key trends for CFD revisited
2025/10/15
In this episode of the Neil Ashton podcast, the host revisits key trends in Computational Fluid Dynamics (CFD) from the past year, focusing on the rise of GPUs, advancements in AI and machine learning, the shift to cloud computing, the increasing adoption of high fidelity methods, and ongoing mergers and acquisitions in the industry. Each trend is explored in depth, highlighting the implications for the future of engineering and technology
Full episode, corrected transcript and resources:
https://neilashton.co.uk/podcasts/s3-e7-five-key-trends-for-cfd-revisited/
S3 EP6 Prof. Brian Launder - CFD and Turbulence Modelling Pioneer
2025/09/30
Professor Brian Launder, Professor at the University of Manchester and Fellow of the Royal Society and the Royal Academy of Engineering, reflects on more than 50 years of turbulence-modeling and CFD research. Neil and Brian discuss the influence of Professor Brian Spalding, the development of the k-epsilon and second-moment closure models, key collaborators and former students, and advice for early-career researchers.
Chapters
00:00 Podcast intro
00:30 Introduction
05:00 Early Academic Journey
10:06 Transition to MIT and Research Focus
16:21 Return to Imperial College and Early Career
21:06 Research Projects and PhD Students
27:46 Development of the k-epsilon model
33:18 CHAM and Career Changes
36:24 Move to UC Davis and New Research Directions
44:05 Challenges and Opportunities in Research
47:07 The Interview Experience
51:14 Transition to Manchester University
52:23 Research Innovations in Turbulence Modeling
57:45 The Development of the TCL Model
01:03:15 Nonlinear Eddy Viscosity Models
01:05:58 Advanced Wall Functions and Their Applications
01:10:09 Reflections on Career and Contributions
01:15:49 Legacy and Impact on Turbulence Modeling
Top Turbulence Modelling contributions (https://scholar.google.com/citations?user=Y3JbAK8AAAAJ&hl=en)
Full episode, corrected transcript and resources:
https://neilashton.co.uk/podcasts/s3-e6-prof-brian-launder-cfd-and-turbulence-modelling-pioneer/
S3 EP5 - Joris Poort - CEO and Founder of Rescale
2025/09/17
In this episode, Joris Poort, CEO and founder of Rescale, shares his personal journey on founding Rescale as well as his thoughts on the future of CAE. He discusses the challenges of introducing HPC to the cloud market, the traits that make successful founders, and the importance of perseverance and execution in entrepreneurship. Joris reflects on the early days of Rescale, the significance of early investors, and the evolving landscape of cloud computing and AI integration in engineering. The conversation highlights the complexities of transitioning to cloud solutions and the future potential of HPC in various industries. In this conversation, Joris discusses the transformative impact of AI on engineering, particularly in the context of inference, simulation, and automation. He emphasizes the importance of efficiency in engineering processes and how AI can significantly reduce the time required for complex simulations. The discussion also touches on the cultural shifts within organizations as they adapt to AI technologies, the potential for AI surrogates to revolutionize engineering practices, and the challenges of closing the sim-to-real gap. Joris offers insights for aspiring founders, encouraging them to pursue meaningful work that can drive innovation and societal progress.
Chapters
00:00 Introductions
03:30 The Genesis of Rescale: A Cloud Computing Journey
05:21 From Engineering to Entrepreneurship: The Leap of Faith
09:28 Traits of a Successful Founder: Courage and Perseverance
14:51 Tactical Steps to Startup Success: Building from the Ground Up
22:10 Milestones and Breakthroughs: The Early Days of Rescale
30:54 Navigating Challenges: The Role of Cloud Providers in HPC
35:24 The Intersection of HPC and AI Training
37:05 Cloud vs On-Premise: The Cost Debate
39:54 Complexities of HPC in Enterprises
42:27 The Slow Shift to Cloud Adoption
44:34 Optimizing Workloads with Rescale
46:50 Usability Challenges in Enterprise Software
48:32 The Rise of Neo Clouds and Competition
51:18 Speed and Efficiency in AI Training
54:34 AI's Transformative Impact on Engineering
58:54 The Future of AI Surrogates in Design
01:03:28 Agentic AI: The New Paradigm in Engineering
01:14:21 Solving Real Business Problems
01:19:26 The Impact of AI on Engineering
01:22:27 Innovation in Aerospace and Beyond
01:25:19 Cultural Change in Organizations
01:28:34 The Future of AI and Engineering
01:39:09 Advice for Aspiring Founders
Keywords
HPC, cloud computing, startup journey, Rescale, entrepreneurship, AI, technology, innovation, engineering, business, AI, engineering, inference, simulation, automation, digital twin, innovation, aerospace, machine learning, technology
Full episode, corrected transcript and resources:
https://neilashton.co.uk/podcasts/s3-e5-joris-poort-ceo-and-founder-of-rescale/
S3 EP4 - 5 tips for CAE engineers in the era of AI
2025/09/02
In this episode of the Neil Ashton podcast, Neil discusses the impact of AI on CAE engineering, providing five essential tips for engineers to thrive in this evolving landscape. The conversation covers the importance of maintaining an open mind, continuous education, and preparing for AI physics applications. It also delves into the build vs. buy dilemma for AI solutions and the emerging concept of agentic AI, which promises to revolutionize engineering practices.
Chapters
00:00 Introduction to the Podcast and AI in Engineering
01:03 Five Tips for CAE Engineers in the Era of AI
01:24 1: Keeping an Open Mind
07:39 2: Understanding AI Physics and Its Applications
13:30 3: Preparing for AI Implementation in Engineering
18:54 4: The Build vs. Buy Dilemma in AI Solutions
22:20 5: The Future of Agentic AI in Engineering
Full episode, corrected transcript and resources:
https://neilashton.co.uk/podcasts/s3-e4-five-tips-for-cae-engineers-in-the-era-of-ai/
S3 EP3 - Professor Johannes Brandstetter on AI for Computational Fluid Dynamics
2025/08/19
In this conversation, Neil Ashton interviews Prof. Johannes Brandstetter, a physicist turned machine learning expert, about his journey from academia to industry, focusing on the application of machine learning in engineering and computational fluid dynamics (CFD). They discuss the Aurora project, the challenges of integrating machine learning with engineering, and the importance of data in training models. Johannes shares insights on the use of transformers in modeling, the significance of resolution independence, and the role of open-source practices in advancing the field. The conversation also touches on the challenges of founding a startup and the need for multidisciplinary collaboration in tackling complex engineering problems.
Links:
Github: https://brandstetter-johannes.github.io
Emmi AI: https://www.emmi.ai
Google scholar: https://scholar.google.com/citations?user=KiRvOHcAAAAJ&hl=de
AB-UPT transform paper: https://arxiv.org/abs/2502.09692
Chapters
00:00 Introduction to Johannes Brandstetter
07:10 The Aurora Project and Key Learnings
11:15 Machine Learning in Engineering and CFD
17:19 Challenges with Mesh Graph Networks
20:16 Transformers in Physics Modeling
31:14 Tokenization in CFD with Transformers
39:58 Challenges in High-Dimensional Meshes
41:08 Inference Time and Mesh Generation
41:36 Neural Operators and CAD Geometry
45:59 Anchor Tokens and Scaling in CFD
48:40 Data Dependency and Multi-Fidelity Models
50:32 The Role of Physics in Machine Learning
54:28 Temporal Modeling in Engineering Simulations
56:58 Learning from Temporal Dynamics
1:00:58 Stability in Rollout Predictions
1:03:48 Multidisciplinary Approaches in Engineering
1:05:18 The Startup Journey and Lessons Learned
Full episode, corrected transcript and resources:
https://neilashton.co.uk/podcasts/s3-e3-prof-johannes-brandstetter-on-ai-for-computational-fluid-dynamics/
S3 EP2 - Prof. Russell Cummings - World leader in Aerospace Engineering and Hypersonics
2025/08/05
In this episode of the Neil Ashton podcast, Professor Russell Cummings shares his extensive journey through the fields of aerodynamics, computational fluid dynamics and hypersonics. He discusses his early inspirations, his early days at University and the Hughes Aircraft Company - a key time during this life. He also talks about the cyclical nature of hypersonics research, and the challenges faced in computational fluid dynamics (CFD). Prof. Cummings emphasizes the importance of perseverance in engineering careers and the need for collaboration between experimental and computational methods. He also shares insights on the role of AI in hypersonics and offers valuable advice for aspiring engineers.
Prof. Russ Cummings graduated from California Polytechnic State University (Cal Poly) with a B.S. and M.S. in Aeronautical Engineering, before receiving his Ph.D. in Aerospace Engineering from the University of Southern California; he also received a B.A. in music from Cal Poly. He is currently Professor of Aeronautics at the U.S. Air Force Academy and Director of the Hypersonic Vehicle Simulation Institute. Prior to this he was Professor of Aerospace Engineering at Cal Poly, where he also served as department chairman for four years. He also worked at Hughes Aircraft Company, and completed a National Research Council postdoctoral research fellowship at NASA Ames Research Center, working on the computation of high angle-of-attack flowfields. He is a Fellow of the Royal Aeronautical Society and the American Institute of Aeronautics and Astronautics.
Distribution Statement A: approved for public release, PA# USAFA-DF-2025-652. The views expressed in this interview are those of the author and do not necessarily reflect the official policy or position of the United States Air Force Academy, the Air Force, the Department of Defense, or the U.S. Government.
Links
Aerodynamics for engineers: https://www.cambridge.org/us/universitypress/subjects/engineering/aerospace-engineering/aerodynamics-engineers-7th-edition?format=HB&isbn=9781009501309
RAeS Lanchester Named Lecture 2024: Frederick W. Lanchester and 'Aerodynamics' https://www.youtube.com/watch?app=desktop&v=lApNzYaZOmk&t=884s
NASA at 50 (Prof Cummings is in the picture): https://images.nasa.gov/details/ARC-1989-AC89-0276-6
Chapters
00:00 Introduction to the Podcast and Guest
04:56 Professor Russell Cummings: A Journey Through Engineering
31:14 The Evolution of Hypersonics Research
58:26 The Role of AI in Hypersonics and CFD
01:37:55 Advice for Aspiring Engineers
Full episode, corrected transcript and resources:
https://neilashton.co.uk/podcasts/s3-e2-prof-russell-cummings-aerospace-engineering-and-hypersonics/
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