This Week in CFD

This week’s collection of CFD ethereal flotsam and jetsam comes from my Covid-soaked mind. But don’t worry, there’s some lucidity herein. There are several items to draw you in such as a beginner’s guide to CAD data, a longish list of fun CFD stuff at AIAA Aviation next week (including free food and conviviality courtesy of Cadence), a survey on the state of cloud PLM, and all the other software releases and event news. Shown here is a cropped teaser from a video about what appears to be goopy fluid dynamics.


  • PTC shares thoughts with DEVELOP3D about surging CAD adoption post-pandemic as part of a larger, post-pandemic digital transformation of manufacturing industries. “…upwards of 70% of product cost was already baked into the product by the time development reached the prototype stage.” This is why you want to simulate early and often.
  • I haven’t finished reading the entire document, but the folks at CAD Exchanger have written a very nice Beginner’s Guide to CAD Data.
  • I’m old enough to remember my mother hanging wet laundry on a clothesline in our backyard. But other than the fact that laundry day cut our football field in half, I never gave much thought to how clothes dry. Science to the rescue: How Fabrics Dry. (As first seen on FYFD.)
This article about new insights into how flow transitions to turbulence is from 2020 but this image of the “collision dynamics” of two vortices is worth repeating.

News from Cadence


  • Gmsh 4.10.4 is now available.
  • Datakit Version 2022.2 includes updates to virtually of of their CAD readers.
  • Applied Math released CoolSim 5 for data center design optimization.
  • Here’s an update from CFD Direct on their 7th year of overseeing OpenFOAM.
  • Xplicit Computing announced that their new XCOMPUTE software will be available in 2022 Q3 to early adopters. They also are hiring.
  • There’s a website dedicated to Code_Aster for Windows, “dedicated to Windows users, interested in using a free software for numerical simulation in structural mechanics.”

CFD for…

This is reported to be the largest (80 cm. height) 3D printed (in copper) aerospike rocket engine. [Honestly, it looks like something H.R. Giger would’ve done for Alien.]

Upcoming – AIAA Aviation

  • AIAA Aviation will be held next week in Chicago.
  • Cadence will be busy.
    • We are hosting a reception on Monday (6p-9p) for you to meet and mingle with the Cadence CFD team. [Engineers: free food and drink!]
    • Come see us in Booth 212 of the exhibition to talk about CFD and mesh generation.
    • We are authors and presenters of four technical papers.
      • Summary of Unstructured Fixed Mesh Generation Efforts for RANS Analyses by Claudio Pita and Carolyn Woeber
      • HLPW-4/GMGW-3: Overview and Workshop Summary by Chris Rumsey (NASA), Carolyn Woeber, and Jeff Slotnick (Boeing)
      • Automatic Boundary Proximity Detection and Element Sizing for B-Rep Constrained Unstructured Meshes using Distance Fields by Nick Wyman and Pat Baker
      • Output-based Mesh Adaptation Using Commercial Mesh Generation Software by Steven Allmaras (MIT), Marshall Galbraith (MIT) and Nick Wyman
  • The CFD 2030 Integration Committee offers three compelling sessions.
  • The Digital Engineering IC offers Geometry Modeling to Support the Digital Thread
  • And there are too many sessions to list on results from the recent Geometry Modeling and Mesh Generation (GMGW) and High-Lift Prediction (HLPW) workshops.
NOT a car driving through mustard. Space-time isogeometric analysis of car and tire aerodynamics. Be certain to watch the video. Image from

News, Events, People

Unpure Geometry

Gary Peterson’s abstractions, like Hollywood Square shown here, bring together elements that aren’t what they appear to be at first. His paintings read like a 3D relief in which my eyes try to drill down to find the ground plane. Color here becomes structure and line becomes illusory. As he wrote, “my geometric abstraction address issues of our current predicaments: uncertainty, imbalance and insecurity, with a bit of humor thrown in.” See more at the artist’s website.

Gary Peterson, Hollywood Square, 2019. See link above.

Bonus: Can you become 10x more impactful than the average engineer? This article describes how. “Become a better communicator” is on the to-do list.

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