Thermal simulation with : conduction, convection and radiation

NGSolve
1

Hello,
I’m quite a new user, i have two questions :

Does NGSolve handle thermal solar radiation and thermal surface-to-surgafe radiation (with view factors) ? If yes, is there an example ?

Does NGSolve handle couples thermal conduction and forced/natural convection ?

Best regards.

2

Nobody deal with nonlinear thermal radiation with gray model ?

My first goal is to validate the well-known radiation in a triangle cavity as explained in the attached pdf.

Thank you for your help.

models.heat.cavity_radiation.pdf (439.1 KB)

3

Not that I know of. some basic functionality should be there like using ContactBoundary to implement the radiative heat transfer, but you’d need to build the view factor matrix or something similar manually.
To build something computationally efficient you’d need your own c++ addon or couple with some other code.

4

Hello Christopher,

I already implemented the view factor matrix Fi,j
I’m wondering is NGSolve can “easily” handle opaque, gray, diffuse radiation model as described in that link (radiation in the Moose framework) :
https://mooseframework.inl.gov/modules/heat_transfer/

Thanks.