Dynamic mesh refinement at specified locations in the domain

kauraajn · August 14, 2019, 13:27

Hello all,

I am relatively new to OpenFOAM, and am familiar with the basics of creating and running basic applications. I have a case where I would like to arbitrarily refine the mesh dynamically at specific locations of interest in my domain. Attached is an example of what I would like to achieve.

TIA for your help and suggestions

clapointe · August 14, 2019, 14:58

How do you define interest? If it's some (continuous) quantitative measure of the flow field, derive some volScalarField that represents that. Otherwise, make a dummy volScalarField, use setFields to set some regions of the field to 1, and multiply this dummy field by another field. Then the other field will be zero except for the regions of interest. Then set the refinement bounds accordingly.

Caelan

kauraajn · August 14, 2019, 15:06

Thanks for the reply Caelan. The region of interest is not based on any quantitative measure of a field. These regions are just arbitrary regions where I desire a mesh of higher resolution. Your suggestion to use a dummy field sounds great, and I believe will achieve exactly what I am looking for. Thanks you so much again!

August 14, 2019, 14:58		#2
clapointe Senior Member Join Date: Aug 2015 Posts: 494 Rep Power: 15	How do you define interest? If it's some (continuous) quantitative measure of the flow field, derive some volScalarField that represents that. Otherwise, make a dummy volScalarField, use setFields to set some regions of the field to 1, and multiply this dummy field by another field. Then the other field will be zero except for the regions of interest. Then set the refinement bounds accordingly. Caelan kauraajn likes this.

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August 14, 2019, 15:06		#3
kauraajn New Member Kaushik Join Date: Jun 2019 Posts: 14 Rep Power: 7	Thanks for the reply Caelan. The region of interest is not based on any quantitative measure of a field. These regions are just arbitrary regions where I desire a mesh of higher resolution. Your suggestion to use a dummy field sounds great, and I believe will achieve exactly what I am looking for. Thanks you so much again!