Which solver should I use for schlieren flow visualization of human body
 

Hi,

I am using OpenFoam to simulate the schlieren flow visualization of a human body. I already got a model constructed using Blender (CAD). I now need to determine which solver to use to obtain a schlieren flow visualization of human body (the thermal plume of a human body). Also, what specific boundary conditions do I need to consider to obtain a schlieren flow of the human thermal plume. Any tips or guidance will be appreciated.