Research On Thermal Interaction Of Combustor Wall With Supersonic Flow

Working environment of high temperature, high enthalpy, determines theimportance of the thermal protection system, in the supersonic combustion chamber.Combustor wall thermal protection structure and the high temperature environmentof the combustion chamber carry out convection-radiation-coupled heat transferstrongly. The high temperature thermal environment of the combustion chamber andsolid wall structure heat transfer of the thermal protection systems affect each other.In the past, coupled heat transfer analysis of the combustion chamber, did notconsider the influence of the thermal physical parameters of structural materials onheat transfer. This paper based on the analysis of related research, analyzed the heatdivert characteristics of the thermal protection system, which use anisotropicsuperconducting materials as the structure of the solid wall of the combustionchamber.With FLUENT software simulated the high-speed combustion, flow and heattransfer process, obtained the coupled heat transfer characteristics of the complexthermal environment and thermal protection structure in the combustion chamber,and extracted the non-uniform heat transfer coefficient distribution, combined withFORTRAN programming studied the impact of heat divert structure of anisotropicsuperconducting materials and film cooling structure on the combustion chamberwall temperature.Through simulation, obtained the thermal characteristics parameters of coupledheat transfer flow field and structure in the combustion chamber, includingcombustor temperature field, the liquid concentration and the solid wall temperaturedistribution, analyzed the influence of the thermal conductivity of the combustionchamber wall material, wall thickness on the characteristics of heat divert, theinfluence of the diameter of film cooling holes, hole spacing-diameter ratio andother parameters of film cooling structure on the cooling effect.