This Week in CFD

Posted on April 16, 2021 by John Chawner

This Week in CFD reached convergence long before I had exhausted the two-week backlog of news. With baseball season underway here in the US, fans will enjoy the case study describing how high-fidelity CFD can predict the trajectory of various types of pitches. There’s a great “must read” article comparing work in academia with work in a national lab. And there’s a wee bit of Pointwise news had you missed it yesterday. Shown here is a generatively-design duct tongue profusion from an article about the use of of advanced CAE technology to cool inkjet print heads and other electronic components. [Duck Tongue Profusion would be a great name for a rock band.]

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This Week in CFD

Posted on April 2, 2021 by John Chawner

It’s a good Friday for the latest roundup of CFD flotsam and jetsam from the ocean that is the internet. [Making this the Great CFD Garbage Gyre?] We use the marine theme because, for unexplained reasons, there are a lot of marine applications this week. The folks at Resolved Analytics are featured twice: once for their previous series on comparing CFD codes and again for a new article on the top 40 CFD consultancies around the world. And the application of the week is certain to quench your thirst for unique uses of CFD. Shown here is a teaser for one of my favorite webinars: Automated Meshing and Adaptive Re-meshing at Bombardier. Check it out at the link inside.

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Resolving Boundary Layers with Unstructured Quad and Hex Meshing: On-Demand Webinar

Posted on March 31, 2021 by John Chawner

All things being equal, CFD practitioners prefer to use hexahedral mesh cells in the boundary layer for the improved robustness and accuracy they bring to the flow solver. Traditionally, a hex grid would be created using a structured grid technique (aka mapped mesh) but these can require too much manual intervention to generate efficiently. Unstructured quad and hex meshing techniques provide the best of both worlds: unstructured flexibility and speed, and hex cell quality.

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This Week in CFD

Posted on March 19, 2021 by John Chawner

Completely fungible and non-tokenized, today’s CFD news begins with a hopeful glimpse at a potential in-person CFD event. You should check-out the list of tips for simulation projects and let us know what was missed. And the coolest news this week IMO is work on smoothly blending two different meshes even if they have different point counts. Plus all the other jobs, workshops, seminars, fluids, meshing, cloud computing news that you might find interesting. The image shown here is a turbomachinery simulation from STAR-CCM+.

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Geometry Modeling and Mesh Generation – Part 3

Posted on March 18, 2021 by John Chawner

In this final installment in our series of posts about the paper Preparation of Geometry Models for Mesh Generation and CFD, we take a peek at what the paper has to say about geometry model suitability. Or more accurately, the lack of suitability which leads to the CFD Vision 2030 Study’s assessment that most CFD processes are “onerous.”

It’s worth noting that the practitioner’s options for geometry modeling are often limited. Their organization may have standardized on a particular MCAD platform. They may receive all models from outside sources. Or their tools, especially their meshing software, may be limited in the types of geometry models it can accept.

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