This Week in CFD

This week’s digest of CFD news and notes (aka a “link dump” as some have said) begins with a brief stroll down memory lane when 3D CFD of an aircraft was worthy of a press release. For readers who missed the 1980s, we’ve got a video of structured grid generation from that era. After that, there are quite a few applications of CFD from fires to X-Wings to screw compressors. Lots of resources for machine learning are included herein. Plus plenty of webinars, jobs, and financial news. Shown here is an image from a Tecplot case study of liquid jet impingement of nasal irrigation. (Read on for the link.)

I don’t remember how I found this document, but here’s a NASA press release from July 1992 about “NASA SCIENTISTS “FLY” COMPUTERIZED FIGHTER AIRCRAFT IN 3-D,” a one million grid point CFD simulation of an F/A-18.

While we’re remembering the olden days, some of the earliest published work from the nascent CFD capabilities at General Dynamics Fort Worth Division is the paper “Analysis of the F-16 Flow Field by a Block Grid Euler Approach” from 1986. The structured grid for this simulation was generated using an early version of GRIDGEN (Pointwise’s predecessor) and included flow into the inlet and out of the nozzle. The paper is referenced at DTIC but isn’t available digitally. I’d have to find my paper copy and scan it.

OK, now I’m just feeling nostalgic. Here is a short video (there’s a 60-minute version) with an overview of the GRIDGEN software system c. 1988 for generating block structured grids. The making of the video is a story unto itself. (After completing the voiceover, the actor said to NEVER give him a script that like again.)

If CAE is a wilderness, to survive you need Simcenter Cloud HPC as your Bear Grylls. Or so this article says. [I resisted the urge to make many another analogies based on this analogy.]

Nektar++ is now on JUWELS.

The Dept. of Energy awarded $3M total for a number of HPC projects including CFD.

CFD on AWS for fire simulation for approvals on constructions projects.

Read how ENGYS created a custom CFD template for Koenigsegg and their Jesko Absolut hypercar.

From Tecplot comes Flow Dynamics of Liquid Jet Irrigation.

Included primarily because I think it’s a cool photo, but wind tunnel tests of the X-59 forebody are generating data used to validate CFD.
Lockheed Martin Photography By Garry Tice 1011 Lockheed Way, Palmdale, Ca. 93599 Event: Forebody and Nose – Windtunnel Testing Date: 2/10/2022 Additional Info:

Animation of the LBM-computed flow around a Star Wars X-Wing.

You are invited to the CadenceTECHTALK (aka webinar) Modeling Unsteadiness with the Non-Linear Harmonic Method in which we’ll show how NLH let’s you compute noise and vibration at a fraction of the computational expense of other methods. Register today for this event on Wed 31 Aug at 9am CDT.

Siemens Digital Industries had a good Q3 with revenue of 4.9 billion euros of which 1.2 billion was software, up 14%. Interestingly, EDA software revenue was up 20%.

Monica also reports that Altair’s revenue was up 11% to $133 million in Q2 with software itself up 17%.

CFD for operating a UAS in the wind environment around buildings.

Screen capture from video of a TwinMesh simulation of oil injection in a screw compressor. [I find the video to be very soothing.]

On Twitter, Ahmad Saeed presents a list of resources for machine learning in fluid mechanics.

And Tom Mitchell’s 1997 book Machine Learning is available online for free.

SimScale describes their approach to CAD cleanup and meshing. [On the idea of “cleanup” and “repair,” imagine if the datasets produced by CFD codes required cleanup and repair before they could be post-processed and visualized. There’d be hell to pay. So what’s the deal with geometry models?]

Speaking of CAD, are you interested in the future of CAD? DEVELOP3D brings you interviews on that topic with representatives from Autodesk, Dassault Systemes, Phenometry, PTC, Shapr3D, and Siemens.

You have until 16 September to submit your manuscript for next March’s SIAM International Meshing Roundtable. Research notes aren’t due until 06 January, technical posters are due on 09 January (letter of commitment by 01 December, and your note of commitment for the meshing contest is also due by 01 December.

Here’s an article about the performance of CRUNCH CFD on Oracle Cloud.

Speaking of CRAFT Tech, they have three open research scientist positions.

Mmmm. Bun baking. CFD modeling of bun baking process under different oven load conditions. But what kind of buns? “Buns are much popular along with sliced bread,” a statement both too broad and lacking specificity.

In case you couldn’t attend last month’s Symposium on Turbulence Modeling: Roadblocks and the Potential for Machine Learning, here are some updates.

Flow Science’s FLOW-3D (x) “lets you graphically and intuitively build automation and optimization workflows as well as connect external nodes like Solidworks, Rhino and Excel to dynamically feed information into your simulation.” 2022 R1 was recently released with several upgrades.

Neural networks supplements CFD for simulation of wind turbines.

Jobs in CFD at Cadence. This blog post describes how to find CFD jobs at Cadence via the Careers page on our website. One open position hasn’t made it to the Careers page yet and that’s in my CFD product management team. For that one – and that one alone – email your resume to me at jchawner at cadence dot com and tell me what excites you about CFD and where you can have the most impact on PM.

LinkedIn user Wan-Chiu Li posted this photo of mesh art seen on the streets of Nancy, France. Keep your eyes open folks!

Street art in Nancy, France. Image credit: Wan-Chiu Li. See link above.
Bonus: Pastry Chef and artist Dinara Kasko uses 3D printing to help create lusciously geometric desserts. Image from Instagram: @dinarakasko. Originally seen at Interesting Engineering.
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2 Responses to This Week in CFD

  1. Sebastian says:

    Thank you for posting the video John

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