Abstract
The heat flux density of radiation heat transfer between rocket motor nozzle’s wall and gas is one of the most important factors to decide temperature of nozzle’s wall. It also provides an invaluable references advice for choosing the material of wall and type of cooling. The numerical calculation based on finite volume method is introduced in the paper. After analysis of the formula of FVM without the influence of scattering, a formula that is used to let spectral radiant intensity that is the calculation of FVM be converted into heat flux density of radiation heat transfer is deduced. It is compiled that the program based on FVM is used to calculate the heat flux density. At the end, the heat flux density of radiation heat transfer of 3D model of double-arc nozzle’s wall is calculated under different condition, then simply analysis cooling system is performed.
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