I've been at this for several days now. I've created a small enclosure and put in a volume heat source. I set up some surface goals and run the simulation.
When the volume source (labeled heat source) is floating in the enclosure then flow simulation has no errors or warnings.
However, when I mate the heat source to one of the sides of the enclosure then flow simulation tells me I have invalid goals.
Reading the forums makes me believe I have a meshing problem. I have tried to use finer initial and finer local meshes, but neither seem to work.
I made the computational domain smaller so the simulation would go faster..I tried to raise the initial temperature of any solids to increase speed of the simulation..this would make it so I could get the finest mesh in the smallest time.. didn't work though.
I'm not sure what else to try out. Just some recommendations would be great. Thanks.