[Other] Run Time Mesh refinement

FlyBob91 · January 31, 2020, 12:58

Hello Foamers,
I'm searching for a tool to refine my mesh in runtime based on the distribution of a scalar that I calculate during my simulation. If you think to a 2D mesh, I would like, after n number of iterations, to split the cells where the gradient of my scalar is larger.

Do you have any utility or tutorial to suggest me?

Thank you for help

clapointe · January 31, 2020, 14:03

You want to use adaptive mesh refinement (AMR). There are interFoam tutorials that use AMR (pretty sure in 3D) -- check the dynamicMeshDict for use of dynamicRefineFvMesh. Native AMR functionality is for 3D use but various versions of adaptations for 2D use have been developed by the community -- a google for "2D amr openfoam" should yield many results (e.g. https://www.sciencedirect.com/scienc...52711018301699, 2D adaptive Mesh Refinement).

Caelan

January 31, 2020, 12:58	Run Time Mesh refinement	#1
FlyBob91 Senior Member Join Date: Mar 2016 Location: Bergamo Posts: 157 Rep Power: 10	Hello Foamers, I'm searching for a tool to refine my mesh in runtime based on the distribution of a scalar that I calculate during my simulation. If you think to a 2D mesh, I would like, after n number of iterations, to split the cells where the gradient of my scalar is larger. Do you have any utility or tutorial to suggest me? Thank you for help

January 31, 2020, 14:03		#2
clapointe Senior Member Join Date: Aug 2015 Posts: 494 Rep Power: 14	You want to use adaptive mesh refinement (AMR). There are interFoam tutorials that use AMR (pretty sure in 3D) -- check the dynamicMeshDict for use of dynamicRefineFvMesh. Native AMR functionality is for 3D use but various versions of adaptations for 2D use have been developed by the community -- a google for "2D amr openfoam" should yield many results (e.g. https://www.sciencedirect.com/scienc...52711018301699, 2D adaptive Mesh Refinement). Caelan HPE likes this.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
[Other] Contribution a new utility: refine wall layer mesh based on yPlus field	lakeat	OpenFOAM Community Contributions	58	December 23, 2021 02:36
SimpleFoam & Theater	jipai	OpenFOAM Running, Solving & CFD	3	June 18, 2019 10:11
Transient run continues from last time (when startover is desired)	bongbang	CFX	2	March 22, 2015 23:05
dynamic Mesh is faster than MRF????	sharonyue	OpenFOAM Running, Solving & CFD	14	August 26, 2013 07:47
plot over time	fferroni	OpenFOAM Post-Processing	7	June 8, 2012 07:56