Numerical simulation of natural convection in a three-dimensional hermetic cavity

A numerical simulation was carried out for the natural convection of a three-dimensional hermetic cavity. A finite element model was built based on Hypermesh. Geometric model and suitable boundary conditions were determined, and using the finite element analysis software to process the results and display the calculation results graphically. The simulation results showed that: For the given structure, the highest temperature in the cavity was up to 355K, and more than 90% heat flux generated by modules was passed through the narrow wall to coolant. Further improvement has been discussed.