This Week in CFD

It’s been three weeks since the last collection of CFD news and notes was published so you can only imagine the backlog. This summer looks to be the return of a lot of in-person conferences and I am looking forward to seeing everyone in 3D again. We’ve got a list of the best aerodynamic resources on the web, gamification of CFD, a lot of job openings, a couple of significant CAE acquisitions, and the usual software releases and application articles. And we end this week, not with art, but with coffee and cookies.

A reminder that the 2022 Symposium on Turbulence Modeling: Roadblocks, and the Potential for Machine Learning is coming up this summer on 27-29 July in Suffolk, VA. Cadence’s Charles Hirsch will deliver one of the keynotes.

ICYMI, we launched Fidelity CFD last week. This product family includes our new, next-generation, high-order, LES, GPU-accelerated flow solver. Read about it here and more importantly watch the video with Charles Hirsch, a genuine smart person.

On the other hand, EE News Europe gets the Fidelity launch totally wrong by claiming it’s a cloud-based system. I don’t think the word cloud appears in the Fidelity press release.

Registration is now open for CadenceLIVE Silicon Valley (currently planned to be an in-person event) on 8-9 June at the Santa Clara Convention Center. The agenda will be finalized soon and then we’ll share the presentations in the CFD track which is shaping up to be quite good.

We will be taking Fidelity CFD on the road this summer at conferences in the turbomachinery, automotive, marine, and aerospace fields. Hopefully you’ll be able to visit us at one of these events.

  • Cadence is a sponsor of Turbo Expo 2022 in Rotterdam on 13-17 June. Come see us in booth #308 in the exhibition hall.
  • Cadence is sponsoring the NAFEMS Americas Conference 2022 in Indianapolis on 21-23 June. We will be presenting a paper on A Disruptive CFD Technology Applied to Automotive Simulations.
  • Cadence will be an exhibitor (booth PB35) at Seawork 2022 in Southampton, UK on 21-23 June.
  • Cadence will be an exhibitor at Euromaritime in Marseille on 28-30 June.
  • Cadence will be an exhibitor at AIAA Aviation in Chicago on 27 June – 01 July.

ENGYS released HELYX v3.5.0 with “a wide range of extended capabilities and code refinements to remove known issues found in the previous release 3.4.0.”

I always talk about planes, trains, and automobiles – for CFD, not the movie with John Candy and Steve Martin – but I rarely see images of CFD for trains. Airflow Sciences to the rescue with this simulation of diesel exhaust plume dispersion in a 50 mph crosswind.

In case you’re not familiar with the FlightStream surface vorticity flow solver from Research in Flight, here’s an on-demand webinar showing how the combination of FlightStream and Pointwise make rapid CFD a reality.

Marine consultancy Houlder acquired Seaspeed Marine Consulting including their CFD capabilities.

Airshaper shares their guide to the best aerodynamic resources. First on the list is YouTube channel Fluid Dynamics 101. I’ve watched their video on the difference between y+ and y* to see if our Y+ Calculator app can be updated to include the latter. BTW, the Y+ Calculator has been updated with a snazzy new icon in our Fidelity brand theme. Install it on your iOS or Android device today and impress friends and family this weekend.

I’ve spent a lot of time in computer rooms of various sorts, what the cool kids now call data centers. Most of them are cold enough to hang meat. Which seems kinda wasteful when you think about it. So this article about the use of CFD for data center design and monitoring seems like a pretty cool (pardon the pun) idea.

PETSc 3.17.1 is now available. (PETSc is “the Portable, Extensible Toolkit for Scientific Computation.”)

CFD for UAVs.

Just when I comment on not seeing train images here’s one from the website for Aerovehicles 5, the fifth International Conference in Numerical and Experimental Aerodynamics of Road Vehicles and Trains. Save the dates of 12-14 June 2023 and plan to travel to Poitiers, France.

CFD for built environment airflow simulation for mitigating risk of aerosol transmission of viruses.

Visualizing data presents their best of the visualization web for December 2021.

CFD and neural networks for supersonic combustion modeling, joint work between Argonne National Lab and NASA using the VULCAN CFD flow solver.

Semiconductor Engineering explores electric propulsion for aircraft.

CFD for clean-room simulations.

Bentley acquired FEA solver developer ADINA. [In which I learned that ADINA is based in Watertown, MA.]

Yes, I read this article simply to find out what a “subsea Christmas tree” is. (A collection of valves and other equipment on top of a wellhead in offshore oil and gas production.) But of course the mesh images are what kept me reading the entire article. From the Leap Australia blog, simulation done using Ansys.)

The CONVERGE User Conference 2022 will be held in Madison on 19-23 September. Abstracts are due by 01 June.

Gamification in CFD is an interesting viewpoint. And timely because next week I’ll be at the ASSESS Congress and democratization of simulation software is one of their themes. The author makes the case that gamification is the next step after democratization to encourage and grow usage. Three types of gamification are cited: socialization, competitions, and play. I’m really interested in your thoughts on this; leave them in the comments.

Let’s see who’s hiring.

CFD for bleb formation in unruptured intracranial aneurysms. [In which we learn that a bleb is a secondary bulb on the aneurysm wall.] Image from

Our friends at Ansys acquired OnScale. Looks like the goal is to move toward browser-based interfaces to cloud-based simulation tools.

I would like to make this my case study of the week but I don’t feel like paying to access the article. The nascent coffee ring with arbitrary droplet contact set: an asymptotic analysis. From the Journal of Fluid Mechanics. Image from

In case you like a cookie with your coffee, here is the new science of Oreology as published recently in Physics of Fluids in which MIT scientists ask the age-old question, “Can I twist my Oreo cookie apart so that the cream splits right down the middle leaving an equal and uniformly distributed amount on each cookie half?”

Oreology. Image from See link above.
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2 Responses to This Week in CFD

  1. Matt Moore says:

    Thank you for highlighting our work on the coffee ring effect! I know that the JFM version isn’t freely available, but you can find the pre-print over on arXiv for free if you are interested –

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