Hi We are trying to make a few cfd of a sneeze for research correlated to COVID 19 on this purpose i was trying to split a head triangulated mesh thus in order to create the inlet mesh for the mouth. to be honest i have already done it once by using ( if i am not wrong ) “Meshsplit” command an…

maybe you can use a nurbs head like you have here: https://grabcad.com/library/adam-group-closed-1

Hi Diego and thanks for your answer. Point is the we only have meshes and we hase to use them cause it is much faster to modify the mouth shape and position by using mesh sculpting softwares. We are not able to understand why meshsplit is so unconsistant. Or maybe we are doing something wrong. Th…

The tools to try first before splitting are: SplitDisjonedMesh CullDegenerateMeshFaces And then ReduceMesh with 1% (To 99% of original) just to rebuild it if the above doesn’t work. Hope that helps.

Or if you split once and then joined back and now want to split again, then try explode first. Maybe, if it was welded prior to splitting and you haven’t welded after, it will come apart again.

Hi Holo and thanks for you suggestions i tried to SplitDisjonedMesh CullDegenerateMeshFaces And then ReduceMesh with 1% Meshsplit command I also tried to triangulate after this but there is no way to split the mesh with the given srf… point is that just a few weeks ago i splitted the same mes…

Hi Ivan, I had to make a new “splitter” for mesh split to work. After some testing I tried splitting with other shapes and those worked fine so that lead to some exploration on your splitting geometry. (I don’t know why it failed though, @Jussi_Aaltonen is this something for you to look into? ) W…

HI Holo and thanks a lot for you help the sent file is exactly what i need but i am not able to obtain same result by repeating the given instructions. here is a vid of me following your workflow , the mesh is not getting splitted by using Meshsplit command . Am i missing something ? m…

@Holo I’m not sure who could look into that. @piac can you or do you know who could?

Hi Ivan @cloudsvisitor77 , the MeshSplit command in Rhino 7 WIP is a new command. It’s being worked on, as explained here: New Mesh Intersection Milestones . I think I know what’s going on. The inconsistency is due to something I am currently working on, called “the problem of resplit”. Once a mesh …

Hi Giulio @piac and thanks for your explanation attached please find the one that should pretty much be the mesh i started from. 20200409 MESH SPLIT FOR CFD NOT WORKING - PIACENTINO.3dm (1.4 MB) I am having the same problems also when i try to split other head meshes and meshes in general …what i…

Mesh split for sneeze cfd not working

Rhino Rhino for Windows

brian (Brian Gillespie) April 14, 2020, 10:33pm 17

RH-57855 is fixed in the latest WIP

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Mesh split for sneeze cfd not working

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