【摘要】 将遗传算法用于透平跨音速叶栅的优化设计，提出了相应的数学模型和优化方法。优化算例表明，本文所提出的模型及算法能有效的优化叶型方案，避免了一般优化算法的局部最优或维数灾难问题，从而在新的领域内将优化计算在叶轮机械设计中的应用进行了有益的探索。更多还原

【Abstract】 A design method of aerodynamic optimization is presented for transonic turbine cascades.The method couples Genetic Algorithms (GAs) to a inviscid flow field Euler solver and the boundary layer calculation.The objective function of the transonic turbine cascade is the minimum of loss factor.The multinomial coefficients of blade geometry are taken as design variables.RA cascade and Beizhong cascade have been used as the examples of optimizational design.It is shown that the aerodynamic performance of the transonic turbine cascades has been improved greatly with little variation of the work and the strength.更多还原