how to get both parts ?
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Hey all together,
i wanna mesh that : picture teg everytime i mesh it with sHM i got the wrong side : picture wrong - its like i need the negativ from it :/ I solved it but overwrite the case and don' t know how my settings in snappy were :/( I ve done several settings but don 't get the geometry :( if i set the location point into one part of the geometry i just get one of the part not both? some idea ? it should be possible ... or not ? Help. Tobi |
Hi Tobi,
OK, now I'm confused... do you want:
If "a" or "c", see the tutorial "heatTransfer/chtMultiRegionFoam/snappyMultiRegionHeater", since you'll be dealing with multiple mesh regions, each one requiring a well defined way of exchanging physical values... By the way, be sure that the STL geometries don't have any leaks. AdMesh can help with that. Best regards, Bruno |
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hi bruno hope i can clear your confusion.
first i am using chtMulti - so i need several parts of regions. I had a look at the tutorials and its all clear if i have to mesh "one" geometry. : picture its just a little extract. Okay so far ... In the middle i have the parts i wanna mesh. The STL file includes all boundary conditions. Don 't know how i should explain it. ... hmm. Okay if i mesh one part its no problem. But in the middle i have 2 or 3 or 4 or 10 parts of the same behavior . So i wanna mesh all parts of the same behavior to get one region for all those parts in the middle. Is it clearer now ? Tobi |
Hi Tobi,
Mmm, I'm still having trouble understanding you :( Possibly it's because I'm tired from the week, so my brain is very slow today :) OK, as far as I can understand, you have two unconnected blocks in a single STL. And you want to generate a mesh inside them and outside them, correct? Well, my experience with multiple regions is limited, but I think that you'll need to resort the same scheme as the tutorial case "snappyMultiRegionHeater". In other words:
When it comes to separating the mesh into various regions, splitMeshRegions is used, according to the faceZones/cellZones identified in snappyHexMeshDict. The working sequence is outlined in Allrun in "snappyMultiRegionHeater". Best regards, Bruno |
Hi
first - thanks a lot. Ehh i just wanna hava a mesh inside both parts. Meshing every region part sperate not in a whole STL like the heatTransfer snappy tutorial, couse if i do that i got "for example" for the parts in the middle 30 different parts. first is correct -> name region = teg second ... domain1 . domain2 ... but its okay. I think i can 't do that. Thanks for your help. My english skills are not as good as it should to give an implicit notice what i wanna do. A nice weekend. Tobi |
Okay - its not possible to get all regions in one step. I 've split it to several domains like you said and now it works :)
Now i know how to do it. thx Tobi |
Hi Tobi!
I'm glad you've finally got the handle on this meshing issue :) You might consider useful to learn a bit of bash scripting and how to use sed and grep, in order to make the whole procedure faster to do and use ;) Best regards, Bruno |
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I have been struggling with the multiRegion SHM for a long time. I have two stl files: iblock.stl and oblock.stl. They are two cubes next to each other. I want to create mesh inside both the two cubes. But the mesh is always not correct. such as : Cellzones: iblock size: 38975 oblock size:0 Could you please, if possible, send me your case? Thank you so much! |
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i think you have the same problem like I had a time ago. Are your Meshparts connected? If not you have the same problem. My chtMulti Case is no more avaiable :/ sorry. But maybe in my backup. I 'll have a look at my hard disk today evening, hoping to find it and send it to you. Tobi |
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thank you so much for your help! my problem is, after running snappyHexMesh, only the file "iblock" has the file "polyMesh" which contains the iblock mesh. But in the file "oblock", there is no such a file named "polyMesh"...... Thank you again! Aqua |
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it's been a long time since you solved the problem but I'm having exactly the same problem now. I understand that I have to have one stl file for each geometry but I don't understand the next steps.. I would really appreciate it if you could help me :) Danke ;) |
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