- Congratulations to Stuart Rogers and his team at NASA Ames for the selection of Pegasus 5 as 2016 NASA Software of the Year. Pegasus 5 is used to assemble overset grids prior to simulation in an overset CFD solver. See image below. [Pointwise’s overset grid assembly capability includes a direct interface to Pegasus 5.]
- Pointwise Version 18, released earlier this week, includes quad-dominant surface meshing, unstructured hexahedral layer extrusion, and tetrahedral clustering sources.
- Meshing is only one aspect of recently released Simpleware 2016.09. Be certain to watch the video.
- The SolidSmack blog delved into SIMIT, the new, open-source, simulation language mentioned here previously. Again, be certain to watch the video.
- The Ahmed Body is back in a paper by Envenio that compares performance of their EXN/Aero solver with the performance of ANSYS Fluent and STAR-CCM+.
- On Engineers Rule, you can read about CAD data exchange and some of the issues involved. If you’ve never thought about the details of this before, it’s worth a read. [One nitpick: “I have always considered IGES to be more of a wireframe protocol.” I may be IGES’ last defender on the planet but IGES is a robust standard for surfaces and solids (i.e. B-Rep Solid Model Object, entity 186) if written correctly – which experience has shown me most software does not do.]
- Resolved Analytics wrote a comparison of popular CFD software packages.
- Do you work with valve stems? Here’s an article describing how to simply generate brick meshes for them.
- OneSails Australia uses CFD in the design of sails for yachts.
News & Reading
- Desktop Engineering magazine is now Digital Engineering.
- FYFD blogger and fluid dynamics maven Nicole Sharp will give a 24/7 lecture at this year’s Ig Nobel Prize Ceremony. [A 24/7 lecture involves presenting your material twice – first in 24 seconds, then using only 7 words. How could we do this for meshing?]
- You have a little less than two months to submit your entry for the ANSYS Hall of Fame.
- The Femap blog shares information from a recent study that reveals how top performing companies use simulation.
- Despite being about FEA and not CFD, DEVELOP3D’s article on workstation performance for simulation is a worthy read. Using ANSYS Mechanical 17 as a benchmark, their conclusions (if I understand them correctly) are: solid state disk is a no-brainer, RAM is worthwhile, but don’t get seduced by CPUs.
- Cray and LS-DYNA offer a white paper (registration required) on a fan-off simulation of a jet engine.
- The Piz Daint supercomputer is being used for CFD, specifically one of the entries for the Gordon Bell Prize. [In case you had the same question as I, Piz Daint is a mountain peak in the Swiss Alps.]
You know by now that I am easily amused (in other words, I suffer from chronic shiny object syndrome). In particular, I enjoy when two or more of my interests get mashed-up. The image below is a vintage animation of Mickey Mouse and a grid. I’m fairly certain (because I don’t remember where I found the image) it’s from the Disney film Thru the Mirror from 1936. If you go to that link and read more, you’ll find another image of Mickey and a grid near the end.
Note: Please remain calm, but due to travel, the Pointwise User Group Meeting 2016, and the International Meshing Roundtable, there may not be another This Week in CFD until October. I will see you at two of those events, right?