论文部分内容阅读
为优化涡轮过渡流道的气动性能,以期提高发动机的整体经济性能,采用二维通流法与单纯性优化算法相结合的方法,对某型发动机涡轮过渡流道进行了二维优化。优化后过渡流道出口的总压损失系数降低了8.4%,流道扩压能力增加了40.4%,同时过渡流道出口气流均匀性也得到很大幅度的改善。使用CFD技术对初始流道和优化后流道性能进行了三维数值模拟,并分析比较了过渡流道与整流支板的三维流场分布,从而验证了二维计算与优化算法的可行性。
In order to optimize the aerodynamic performance of the turbine transitional runner in order to improve the overall economic performance of the engine, a two-dimensional optimization of the turbine transitional runway of a certain type of engine is carried out by a combination of a two-dimensional flow-through method and a simplex optimization algorithm. The coefficient of total pressure loss at the outlet of the optimized transitional flow channel has been reduced by 8.4% and the flow capacity of the flow channel has been increased by 40.4%. Meanwhile, the uniformity of the flow at the outlet of the transitional flow channel has also been greatly improved. The CFD technique was used to simulate the initial runner and the optimized runner, and the three-dimensional flow field distribution was analyzed and compared. The feasibility of two-dimensional calculation and optimization algorithm was verified.