[ajsarode]

Hello Everyone,

I am currently using SolidWorks Simulia for transient thermal simulations. There is a solid object that needs to be heated with a hot liquid. Initial condition of the solid is 300K; fluid is 350K. Inlet BC is mass inlet and outlet is pressure outlet. To validate the simulation, I need to balance the heat taken by the solid object and heat given by the fluid. To calculate the heat given by the fluid, I cannot directly consider (Inlet energy - Outlet energy) as there will be thermal information lag because the fluid particle that gave away heat to solid object at time t=t0 will reach the outlet at t=t0 + dt (depending on the fluid velocity). Therefore, there will always be a lag between data capture.

One solution that I was looking at was to consider the volume weighted average of solid and fluid temperature at any instance and then try to validate the simulation. However, Simulia cannot capture the volume weighted average temperature. Also, I thought of having a cut section just after the solid object and then take the energy difference between inlet and cut-section. This seem to did not work as the wakes formed after the solid object changes the flow dynamics of the fluid.

Thus, I would like to get a help from the community regarding the validation of this transient thermal simulation.