Localized dense mesh near the inlets for the combustor
I am working on the analysis of combustion in axissymetrical 2D with swirl using ANSYS workbench 17.2. I need a very dense mesh near the inlet of the combustor, where most of the swirl and turbulence is taking place.
Can someone guide me, how I can define a dense grid around the inlet and less dense mesh as I go away from the inlet. What parameters do I have to set up in order to achieve a localized dense grid.
Please see the rough sketch of the objective I want to achieve.