Computation and analysis of transient thermal performance of metal honeycomb sandwich panels

Knowledge of the thermal performance of Ni-based honeycomb sandwich panels in a thermal protection structure (TPS) is a prerequisite for the design of metal thermal protection structures (MTPS). In this article, transient heat analysis of honeycomb sandwich panels is conducted starting from a simulation aerodynamic heating experiment on Ni-based superalloy sandwich panels of GH3039. Based on the theoretical analysis of convection heat transfer of the boundary conditions to the plate faces, simulation of the panel transient heat transfer is obtained. Impacts of the thermal field on metal honeycomb sandwich panels for different environments of underside faces are calculated. Then errors and corrections between the results of the panel in experiment and the panel in a multilayer structure are analyzed. Finally the effect of parameters in the sandwich panel design on the transient thermal performance of the panel is discussed and the influences of material properties and thickness of core-wall on transient thermal performance are demonstrated.