|November 16, 2009, 06:02||
A few simple questions about SnappyHexMesh.
Join Date: Jun 2009
Posts: 38Rep Power: 8
Hey guys I ve some simple questions about the handling of snappyhesmesh.
How can I define the position of a stl- file with snappyhexmesh in a blockMesh-Mesh (e.g. simple cube as atmosphere)?
And how can I assign the different boundaries of the stl-file in snappyhexmesh? Comparing to blockmesh for example there its quite easy just writing the boundarynames into the blockMeshDict, but I ve no clue about managing it in snappyhexmesh.
Regaring the chtmultiregion-example (snappymultiregionheater) there are a few different slt-files in the tri-surface (was an assembly), so how is it possible to import the whole assembly? Simply split the assembly in single components and then export each as stl-file and then define the possition or is there a function in to export the assembly in slt-files?
|December 19, 2009, 15:30||
coordinate system of stl-files
Join Date: Dec 2009
Location: Hamburg, Germany
Posts: 19Rep Power: 8
you have to setup the coordinate system in a CAD-programm and then save to stl.
The position of the stl-surface regarding to the coordinate system is just important when you setup your points for the blockMeshDict.
I always create a simple blockMesh of the right size and open it with paraFoam. Then I load the stl-file into the postprocessor and see its position relative to the blockMesh. With the ruler it is also possible to measure the offset between them. Then I change the points in my blockMeshDict and create the mesh again.
A bit more difficult is to get the right angle between blockMesh and stl. As I set the left wall of my blockMesh as a inlet, and I wantet it to be orthogonal to my stl.-surface, I had to modify the geometry with a CAD-program. That's more convinient than calculating the coordinates of the meshpoints to match the right angle.
|Thread||Thread Starter||Forum||Replies||Last Post|
|questions about SIMPLE algorithm (by Patankar)||Nutty||Main CFD Forum||5||January 22, 2015 13:22|
|Few simple questions concerning boundary conditions (pressure)||milos||OpenFOAM Pre-Processing||1||March 21, 2009 08:08|
|Questions about the simple algo||lam||OpenFOAM Running, Solving & CFD||1||July 30, 2007 12:41|
|Simple fluent email@example.com||FLUENT||0||May 18, 2005 12:50|
|Do you know these simple Gridgen questions?||GER||Pointwise & Gridgen||3||November 5, 2004 18:53|