Numerical simulation for fluid-solid thermal coupling of fuel-rich pasty propellant in combustion spray head of ramjet

Paste combustion ramjet combustion spray head content of the flow,heat transfer and thermal conductivity,is a typical issue of flow-solid thermal coupling.The issue of combustion spray head coupling was simulated to obtain the temperature distribution of combustion spray head and the propellant flow parameters in the hole of different extrusion pressure and different propellant initial conditions.The results show that the thermal conductivity of combustion spray head temperature have a greater impact on the flow rate of propellant,while the combustion spray head temperature distribution has little impact with the extrusion pressure and propellant temperature.At the same time,the combustion spray head has a specific stable working time.