Engine jet flow heat effect engineering analysis method

An engine jet flow thermal effect engineering analysis method adopts a strategy of engine jet flow field calculation and jet flow-to-equipment thermal effect step-by-step calculation, and comprises the following steps: firstly, solving an N-S equation through a numerical value to obtain engine gas internal and external flow field parameters; constructing a complex configuration equipment surface grid, and adopting an interpolation method to obtain grid point flow parameters; and finally, judging the incidence angle of the flow relative to the surface grid, and respectively adopting a low incidence angle reference enthalpy method, a large incidence angle stationary point flow method and a middle incidence angle weighting method to obtain the heat flux density distribution of the gas jet flow on the surface grid of the equipment. The method solves the problems of difficult modeling, much calculation time and the like of complex configuration engine thermal jet analysis, can quickly carry out complex configurati