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Dan Combest

@dancombest.bsky.social

Multiphysics Simulation Engineer & #programmer working in the #EV industry. Following developments in #CFD , #CAE , #HPC , and #DataScience Fascinated with Design for Manufacturability and Assembly #DFMA

80 Followers  |  115 Following  |  44 Posts  |  Joined: 09.02.2024  |  2.1069

Latest posts by dancombest.bsky.social on Bluesky

Post image 28.03.2025 16:18 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Anode-free solid-state batteries: Fundamental insights bring them a step closer to practical use From laptops to electric vehicles, lithium-ion batteries power everyday life. However, as demand for longer-lasting devices threatens to outstrip the energy that lithium-ion supplies, researchers are ...

Development of advanced manufacturing techniques requires understanding of the underlying manufacturing challenges on a fundamental level.
Solid state batteries are a prime example where we are creating manufacturing techniques as we understand the science.

techxplore.com/news/2025-02...

01.03.2025 12:03 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Physicists uncover evidence of two arrows of time emerging from the quantum realm What if time is not as fixed as we thought? Imagine that instead of flowing in one directionβ€”from past to futureβ€”time could flow forward or backwards due to processes taking place at the quantum level...

Physicists uncover evidence of two arrows of time emerging from the quantum realm phys.org/news/2025-02...

15.02.2025 21:26 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Rivian Secures $6.57 Billion Loan for New EV Manufacturing Facility in Georgia - RivianTrackr In a move set to revolutionize the EV industry, Rivian Automotive has secured a $6.57 billion loan from the Department of Energy’s (DOE) Loan Programs Office. This funding supports the development of ...

BREAKING: Rivian secures a $6.57B loan to build a massive EV plant in Georgia! Project Horizon will create 7,500 jobs, produce 400k EVs annually, and drive the future of clean transportation.

Read more: riviantrackr.com/news/rivian-...

16.01.2025 21:41 β€” πŸ‘ 95    πŸ” 10    πŸ’¬ 4    πŸ“Œ 5
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The Science Behind Honda’s Solid-State Battery Breakthrough Honda may become the first car company to get an all-solid-state battery into an actual car. Here is how they're doing it.

Honda starting a demo manufacturing line for their solid state battery technology. No details on energy density and overall mass.

The promises of greater range, simplified cooling, durability, safety, simpler manufacturing are worth the investment.

#ev #battery

www.topspeed.com/honda-solid-...

02.01.2025 17:05 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

"Geothermal is the rare energy source to garner bipartisan support β€” it’s a way to both reduce planet-warming emissions and put America’s drilling rigs and oil-and-gas engineers to work."

20.12.2024 15:01 β€” πŸ‘ 7    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0
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Jameson-Kim-Wang Symposium Objectives To bring together researchers working on both fundamental and applied aspects of CFD to provide an open forum for discussing future directions of CFD To celebrate the careers of Antony Jame...

Anyone in the Bay area that is involved with or interested in #CFD should attend this

sites.google.com/view/jkwsymp...

17.12.2024 21:50 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

The interface between hexagonal and tetrahedral cells offers other challenges, not just a change in accuracy but a change in stability.

RANS can handle this mostly since it's more diffusive, but DDES type simulations suffer lots of issues at these types of interfaces

14.12.2024 21:27 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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I'll repost this from
x.com/HiroNishikaw...

With a link to the reference paper.
fun3d.larc.nasa.gov/papers/nia_2...

14.12.2024 21:19 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
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As a simulation engineer that works in modelling fluids daily, this is the most fascinating collection of videos on the topic.

Notes: web.mit.edu/hml/notes.html
Videos: web.mit.edu/hml/ncfmf.html

13.12.2024 21:11 β€” πŸ‘ 1    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0

Success includes making a product that is cost effective, safe, environmentally friendly, efficient, durable, and maintainable among other attributes.

11.12.2024 21:16 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Here’s What A Zero Star EV Crash Test Looks Like Lacking basic safety equipment like seatbelt pre-tensioners and load limiters, the Neta V is becoming famous for all the wrong reasons.

It's extremely important for US automotive to exist and offer options to consumers. New manufacturing processes, materials, technology, design innovation, regulations and capable workforce are critical to success.

Without any of this, a race to the bottom...

insideevs.com/news/743705/...

11.12.2024 21:14 β€” πŸ‘ 1    πŸ” 1    πŸ’¬ 1    πŸ“Œ 0
β€œSolid-body trajectoids shaped to roll along desired pathways”
YouTube video by NCCR SwissMAP β€œSolid-body trajectoids shaped to roll along desired pathways”

So, today the 10 year old got interested in scutoids due to a Vi Hart video, and that led to looking into all sorts of weird shapes, and HOLY SHIT how come nobody told me about trajectoids? www.youtube.com/watch?v=VbuX...

28.11.2024 01:31 β€” πŸ‘ 117    πŸ” 22    πŸ’¬ 13    πŸ“Œ 3

Ivor Clifford.
Autocorrect out here just renaming researchers.

27.11.2024 21:37 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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There actually seems to be quite a bit of nuclear use/application with OpenFoam. Some of the most interesting was a coupled matrix work by Ivory Clifford.

sourceforge.net/projects/ope...

This was later applied to conjugate heat/mass transfer systems and implicit pressure velocity coupling methods.

27.11.2024 20:56 β€” πŸ‘ 1    πŸ” 1    πŸ’¬ 2    πŸ“Œ 0
Overview of CFD Verification & Validation

Finally, for simulations that do strive for accuracy or alignment with reality or to be simply useful in understanding a phenomena, apply some standards.

www.grc.nasa.gov/www/wind/val...

27.11.2024 19:11 β€” πŸ‘ 1    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0

When a simulation uses lots of resources and is still wrong, there needs to be another reason to run it.

If that reason is an incremental improvement in a method or computer science or programming paradigm... Great.

Let's not automatically assume a large simulation is correct.

27.11.2024 19:08 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

There is certainly value in developing new simulation methods that aren't absolutely accurate. They may be directionally accurate and tell me that a change from the baseline increases or decreases the measured design variables.

This is my current expectation with machine learning and CAE.

27.11.2024 19:05 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

It looks amazing for sure, and I am amazed by the hugeness of the mesh and overall timescales.

However, I do question the validity. For an automotive case ( much lower Re number) one would use a smaller cell than this simulation to correctly capture the near wall physics in DDES turbulence model.

27.11.2024 18:18 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

That's pretty awesome!

I'm attempting to start over with rust this time. We will see.

26.11.2024 23:30 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Rivian receives conditional commitment from DOE for $6.6B for GA plant - Newsroom - Rivian Rivian Receives Conditional Commitment for up to $6.6 Billion Loan from the U.S. Department of Energy’s Advanced Technology Vehicle Manufacturing (ATVM) Program

Well this is some exciting news today.

Rivian Receives Conditional Commitment for up to $6.6 Billion Loan from the U.S. Department of Energy’s Advanced Technology Vehicle Manufacturing (ATVM) Program

rivian.com/newsroom/art...

#ev #manufacturing #automotive #rivian

26.11.2024 20:26 β€” πŸ‘ 4    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Enough to feel a little clever but not enough to quit my day job πŸ˜•

26.11.2024 16:02 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

I didn't have this one on my bingo card. This is a bit worrying.

26.11.2024 00:14 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Site Maintenance

A more official new release from Cadillac

news.cadillac.com/newsroom.det...

25.11.2024 19:24 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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General Motors agrees on deal to become 11th F1 team in 2026

Exciting day in motorsport. GM is bringing a Cadillac team to the #F1 grid in 2026 www.motorsport.com/f1/news/gene...

Looks like Mario Andretti, the last American F1 champion, will serve as a director on the team's board.

#motorsport #formulaOne

25.11.2024 19:19 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
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Lukas Henkel on LinkedIn: #simulation #electronics #hardwaredesign | 42 comments This animation shows a forced convection airflow over a printed circuit board. I've tested a visualization pipeline in Blender using BVTKNodes and an image… | 42 comments on LinkedIn

Source of the work for those curious

www.linkedin.com/posts/lukas-...

24.11.2024 22:26 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Has anyone tried this BVTKNodes for blender? bvtknodes.readthedocs.io/en/latest/BV... Saw some really interesting thermal + PCB rendering of some CFD results for forced airflow over a circuit board.

#simulation @blender3d.bsky.social #cfd

24.11.2024 22:25 β€” πŸ‘ 3    πŸ” 2    πŸ’¬ 1    πŸ“Œ 0

It certainly makes sense in a heavily regulated industry.

The point is that it connects the dots between data and desired product attributes.

Something that I think a lot of simulations (and simulation engineers) are disconnected from in general.

24.11.2024 18:57 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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One of my favorite sites of all time, project Euler ( projecteuler.net ). Project Euler is a series of challenging mathematical/computer programming problems that will require more than just mathematical insights to solve. #projectEuler #cPlusPlus #programming

24.11.2024 15:46 β€” πŸ‘ 2    πŸ” 2    πŸ’¬ 1    πŸ“Œ 0

@petebachant.me I wish i had a tool like this in graduate school. Nowadays, industry is rife with disjointed and incoherent data. Connecting the dots between what is requested by one team and provided by another is either a custom solution or something like www.jamasoftware.com

24.11.2024 15:24 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

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