Local shape optimization method for reducing aerodynamic heat interference of bulge

The invention provides a local shape optimization method for reducing aerodynamic heat interference of a bulge. The local shape optimization method comprises the following steps: acquiring spatial flow field distribution and surface heat flow distribution of the bulge and a nearby cabin body; analyzing the flow structure at the bulged part of the cabin body to obtain the size of the separation vortex and extract the size characteristics of the separation vortex; carrying out appearance optimization on the joint of the front portion of the protrusion and the cabin body according to the size characteristics of the separation vortex; analyzing the optimized flow field result and surface heat flow distribution; if the two-dimensional simplified shape optimization result meets the requirement and the real three-dimensional shape verification result also meets the requirement, ending the optimization; and if the optimization of the two-dimensional simplified shape does not meet the requirements, restarting the opti