摘要
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。
To optimize aerodynamic performance of intermediate turbine duct in order to gain improvement of better economic performance of the engine,a two-dimensional optimization method was adopted in designing of intermediate duct by combining two-dimensional through flow method and simplex method together.The optimization was conducted successfully in obtaining the total pressure loss coefficient of the duct outlet decreased by 8.4 percent and diffusion capability increased by 40.4 percent,meanwhile flow uniformity of that was improved substantially.Additionally,both initial duct and optimal duct,using three dimensional CFD method,were subsequently numerically simulated to compare the flow field of intermediate duct and struts,which shows the feasibility of this optimization method.
出处
《推进技术》
EI
CAS
CSCD
北大核心
2013年第2期161-167,共7页
Journal of Propulsion Technology
关键词
涡轮过渡流道
二维优化
数值模拟
总压损失系数
压力系数
Intermediate turbine duct
Two dimensional optimization
Numerical simulation
Total pressure loss coefficient
Pressure coefficient