How Powerful is Thermal Simulation?

Hi there,

I need to do some rather complex thermal simulation on sleeping bags and was wondering how powerful the thermal simulator on SolidWorks is. Can I adjust things like humidity, air movement, temperature within different zones, insulation values ect.? I would like to use a program like the pricier MSC Nastran, but I'm afraid that isn't in the budget. Thanks!

SolidworksSimulation