Three-dimensional nose shape optimization of the front-rear symmetric train with different design objectives

초록

The 3D nose shape optimizations of the front-rear symmetric train are performed. The unconstrained optimization is accomplished for the reduction of only the aerodynamic drag and the constrained optimization is done for the reduction of both the aerodynamic drag and the micro-pressure wave. The unconstrained optimization reduces the aerodynamic drag by18% point compare with its baseline and the constrained optimization reduces the aerodynamic drag by 15% point.