Specify refinement region directly during run time?

Taozi · July 27, 2015, 17:06

Dear All,

I am wondering if it's possible to programically control the region of mesh refinement. Suppose you have a moving object and you can obtain it's location (x, y, z) at anytime, then can you directly specify in code a region around this object (like (x-1, y-1, z-1) to (x+1, y+1, z+1)) to be refined to a certain level n?
I think by default the mesh refinement region is based on certain criteria specified by the user (mostly gradient of something), but in some cases all details in a certain region are needed, like the one I mentioned. In addition, I guess directly specifying the region is faster as it saves OpenFOAM from finding the region numerically.
Any discussion or suggestion is welcomed!

Regards,
Taozi

Taozi · July 28, 2015, 10:51

I will answer my own question, I just realized that I can create a separate volScalarField and let dynamic mesh use this field to refine the mesh, and this field can be updated arbitrarily -- such as using a changing location.

July 27, 2015, 17:06	Specify refinement region directly during run time?	#1
Taozi New Member Chenguang Zhang Join Date: Jul 2012 Location: Baton Rouge Louisiana Posts: 15 Rep Power: 13	Dear All, I am wondering if it's possible to programically control the region of mesh refinement. Suppose you have a moving object and you can obtain it's location (x, y, z) at anytime, then can you directly specify in code a region around this object (like (x-1, y-1, z-1) to (x+1, y+1, z+1)) to be refined to a certain level n? I think by default the mesh refinement region is based on certain criteria specified by the user (mostly gradient of something), but in some cases all details in a certain region are needed, like the one I mentioned. In addition, I guess directly specifying the region is faster as it saves OpenFOAM from finding the region numerically. Any discussion or suggestion is welcomed! Regards, Taozi

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Elastic or Plastic Deformations in OpenFOAM	NickolasPl	OpenFOAM Pre-Processing	36	September 23, 2023 08:22
AMI interDyMFoam for mixer nu problem	danny123	OpenFOAM Programming & Development	8	September 6, 2013 02:34
mixerVesselAMI2D's mass is not balancing	sharonyue	OpenFOAM Running, Solving & CFD	6	June 10, 2013 09:34
[snappyHexMesh] snappyHexMesh aborting	Tobi	OpenFOAM Meshing & Mesh Conversion	0	November 10, 2010 03:23
calculation diverge after continue to run	zhajingjing	OpenFOAM	0	April 28, 2010 04:35

July 28, 2015, 10:51		#2
Taozi New Member Chenguang Zhang Join Date: Jul 2012 Location: Baton Rouge Louisiana Posts: 15 Rep Power: 13	I will answer my own question, I just realized that I can create a separate volScalarField and let dynamic mesh use this field to refine the mesh, and this field can be updated arbitrarily -- such as using a changing location.