The Optimization Design of Large-Camber Nozzle Based on Geometric Optimization

A large-camber nozzle is parametrically defined based on hyperelliptic equations and high-order continuous transition curves. Firstly, the transition curve that controls the geometric parameters of the nozzle is optimized, so that the nozzle has a smooth transition shape before aerodynamic optimization. Based on the geometric optimization solution, the optimization design of straight nozzle and large-camber nozzle is carried out with objectives of high thrust coefficient and high total pressure recovery coefficient. Compared with direct optimization, the work based on geometric optimization is more efficient and less time-consuming. The nozzle after geometric optimization with better thrust characteristics can be directly applied, which facilitates the rapid optimization design of nozzles in engineering.