Greetings,

what are the boundary conditions requested for coupling between the fluid flow and heat transfer when designing a piezoelectric pump(piezo actuator)? For heat transfer physics, I mean what are its conditions, as well as for fluid flow, fluid here (air). Because when I do the simulation, I do not notice any response between the flow of the fluid and the heat transfer of a hot surface even heat flux changes.

see attachment image which explained the physics used,Please.

Any suggestion is highly appreciated.

Haider