On Scaling and Component Input Docs

Grasshopper Eddy3D
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Hi, I just got the beta 0.4.8 Eddy3D and that wind tunnel template to work with RH8-Win. Great stuff, thank you guys SO MUCH for this beginner-friendly access / entry to openFoam!!

Now I want to replace the template geometry with my own.
I’m trying to work out some general force boundaries of a CSP heliostat. Generally speaking: a 5m x 5m mirror surface with a 10-20cm sandwich plate as support, everything flat n boxy.

  1. Would you see a problem using Eddy for this kind of detail-model-size-case? I don’t need hyper-precise results, just a general idea of the wind loads on the mirror/surfaces.

  2. Does Eddy3D necessarily need to work in a meter-unit model?
    My model is in mm and it’s about 5m x 5m x 5m large. Would you recommend scaling my model DOWN (to meters) or the boundary boy UP (and try n work with mm in Eddy)?

  3. I’m guessing a resolution between 10 and 100 per meter would be helpful for understanding my load case.
    Is there a documentation of Eddies component inputs and what they stand for, number-domains etc? I’m guessing it would be a subset of some OpenFoam params – maybe a link to the corresponding page of the doc.OpenFoam.com on the Eddy3D support page (per component) would do the trick?

Thanks again, I’m really grateful somebody implemented a tool like this for GH !!

1 Like
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Ok, so apparently this time there is a description of the components that’s actually helpful!
I’m working with RH/GH for several years now, and I STILL get slapped in the face by trivial stuff…

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Wow, ok so the help is only displayed when there are NO other components connected.
even the right-click-help-menu gives a different level of detail…

Is that a common Grasshopper UI philosophy?? WHY !?!?

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Thanks, Vincent! Keeping this alive and moving forward while attending to new responsibilities is difficult but we are trying our best.

  1. Sounds realistic to me.
  2. Yes it does. I would work in meters only.
  3. Eddy3D adheres to the official OpenFOAM dimensions which you can fine here and here.