This Week in CFD

Hardware

  • The U.S. Congress is getting involved in exascale computing through the House’s passing of the American Super Computing Leadership Act by which the Dept. of Energy is tasked with advancing U.S. supercomputing via a number of methods including establishment of at least two gov’t-academia-industry partnerships. (Note: The Senate still needs to consider this act.)
  • The future of simulation driven product development resides in the cloud says the CEO of Hi Tech CAE because of the high demand to be placed on computing resources.
CFD solution for an F-1 race car from the CFD is the Future website. See link above.

CFD solution for an F-1 race car from the CFD is the Future website. See link below.

Software

  • Version 0.3 of SpeedIT FLOW is now available. This RANS solver (appears to be based on OpenFOAM) runs entirely on the GPU.
  • Rhino users can now generate NACA airfoils using the SeaHorse Foils plugin.
  • Autodesk is currently testing Project Arro, a new tool for cleaning up CAD geometry so that it’s ready for simulation.
Preview of Autodesk's Project Arro, specifically the stitch function for finding gaps in geometry. See link above.

Preview of Autodesk’s Project Arro, specifically the stitch function for finding gaps in geometry. See link above.

Getting Started in Simulation

After reading How to Form an Engineering Simulation Plan by the president of CAE Associates in R&D Magazine I was like, “Dang, there goes one-third of my content for next Tuesday’s webinar.”

For those of you new to simulation (or CFD specifically), the article goes into detail on how to bring simulation into your organization. Here are the highlights [as paraphrased by me].

  1. Start simple. Computing a time-dependent simulation of multiple moving bodies in reacting flow might not be the best “out of the box” test.
  2. Know what you want from the simulation. “Color pictures” is a valid answer, just not a good one.
  3. Stay narrowly focused on what you want to simulate.
  4. Train everyone on the simulation tools. They are not black boxes.
  5. Understand what your success criteria are.
  6. Know the limitations of your design and the tools.
  7. Validate, validate, validate. Can’t emphasize this enough. Running validation benchmarks is a great learning exercise and confidence builder.
  8. Allocate the appropriate resources.
  9. Be flexible.

If you’re still interested even after reading the article, join me and ENGINEERING.com’s Shawn Wasserman next Tuesday, 16 September, at 2:00 p.m. eastern for a wide-ranging conversation about why It’s a Wonderful Time To Be Using CFD.

Applications

Meshing

  • An improved orthogonal grid generation method for solving flows past highly cambered airfoils with and without roughness elements. (Registration and fee required.)
  • LearnCAx wades into the mesh quality debate with the article “A good-looking mesh isn’t always the best.”
A good mesh sometimes looks not-so-good or so says LearnCAx. See link above.

A good mesh sometimes looks not-so-good or so says LearnCAx. See link above.

Events & More

Abstractly Systematic

A valued reader (thank you) emailed me a link to the Systems Art blog and website, an online forum for exploring the use of systems theory for looking at extant works and creating new ones.

I bet you can appreciate how systems theory can be applied to certain types of geometric abstractions: Mondrian, for example.

Three excellent examples of Mondrian's painting. Click image for source (a very nice article unto itself).

Three excellent examples of Mondrian’s painting. Click image for source (a very nice article unto itself).

But I suppose the works of Jackson Pollock might challenge any systematic attempts at understanding. However, on the Systems Art blog you can read about “random regularity” and how his paintings (and those of others) can be interpreted.

Author Aldous Huxley once asked rhetorically how Pollock knew when he was done painting. Whether in response to Huxley or someone else, Pollock reportedly answered “How do you know when you’re done making love?”

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