Adaptive Mesh Refinement based on an octree data structure?

banji · August 28, 2015, 14:21

Is the OpenFOAM Adaptive Mesh Refinement based on an quadtree/octree data structure ?

Thank you.

banji · August 28, 2015, 14:34

Quote:

Originally Posted by hjasak

Yup. Use a mixed boundary condition and switch the value fraction. That will do most things.

If you want to be really fancy, you can have a topologically changing mesh and a rematch topo modifier to move faces from one patch to another

Hello Prof. Jasak,

Please, is the implementation of dynamic mesh refinement in openfoam based on an octree data structure?

I wish to understand the code better especially the dynamic mesh handling for a moving interface. Here, I believe the value of the volume fraction (alpha/gamma) is used for thresholding.

Thank you.

wyldckat · August 30, 2015, 18:41

Quick answer: Used Google with this search:

Code:

site:cfd-online.com mesh refinement octree openfoam

Found a few examples:

2D meshes for dynamic refinement is not supported. There are a few threads that talk about it.

August 28, 2015, 14:21	Adaptive Mesh Refinement based on an octree data structure?	#1
banji Member Olabanji Join Date: Jan 2013 Location: U.S.A Posts: 31 Rep Power: 13	Is the OpenFOAM Adaptive Mesh Refinement based on an quadtree/octree data structure ? Thank you.

August 30, 2015, 18:41		#3
wyldckat Retired Super Moderator Bruno Santos Join Date: Mar 2009 Location: Lisbon, Portugal Posts: 10,981 Blog Entries: 45 Rep Power: 128	Quick answer: Used Google with this search: Code: site:cfd-online.com mesh refinement octree openfoam Found a few examples: http://www.cfd-online.com/Forums/ope...ll-octree.html http://www.cfd-online.com/Forums/ope...am2-0-1-a.html 2D meshes for dynamic refinement is not supported. There are a few threads that talk about it.

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