Structural & Thermal

Structural & Thermal

What is the meaning of thermal conductance defined in contact? What is the program controlled Thermal conductance value? How to achieve partial conductance through the contact?

    • FAQFAQ
      Participant

      It represents thermal conduction through the contact. q=TCC(Tc-Tt) Theoretically, TCC=infinity would represent perfect contact. Thus, Tc=Tt for TCC=infinity. However if user defines too large a TCC value, it will create numerical instability issues. So the default calculation is an attempt to come up with a large enough value for TCC to simulate “perfect” thermal contact without causing numerical instability. Partial thermal contact can be achieved by throttling TCC down to a small value. As TCC gets smaller, the Delta Temp between contact and target surfaces should increase. As TCC approaches zero, q=zero and the interfaces approaches a perfectly insulated condition with no heat transfer.