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STL file

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OpenLB – Open Source Lattice Boltzmann Code › Forums › on OpenLB › General Topics › STL file

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  • February 9, 2015 at 7:38 pm #1773
    lilianaxavier
    Member

    Hello!rnrnAnybody can help me on the preparation of the STL file for input on OpenLB?rnHow can I define the boundary? Where these kind of information should be stored?rnrnThanks a lot.rn

    February 10, 2015 at 2:32 pm #2171
    mathias
    Keymaster

    Hi Liliana,rnrnCheck out the cylinder3d and aorta3d example. There you will lern how to set boundary consitions. To create an stl-file you may use standard CAD software. We have uploaded the input file for FreeCAD (http://www.freecadweb.org/).rnrnBest regardsrnMathias

    February 10, 2015 at 3:04 pm #2173
    lilianaxavier
    Member

    Hi Mathias,rnrnthanks for the reply.rnActually, I have a STL file and I used FreeCAD to open it. But I am not sure how can I set the boundary. I mean, how can I identify which one is wall, outlet, inlet, etc. I am really lost…rnrnThanks again for the attention!rnrnBest wishes,rnLiliana.

    February 10, 2015 at 4:13 pm #2174
    mathias
    Keymaster

    Hi,rnrnThis is done inside OpenLB and not with the STL-file. You need to assign different material numbers to the different regions “”by hand”” (see cylinder3d). In the new release, you will be able to use geometry primitives like Cicles, Cuboids and there combination or intersection to rename materials which is much mor convenient than “”looping by hand””. rnrnBest regardsrnMathias

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