大连理工大学 硕士学位论文 高膨胀比跨音速涡轮的设计研究 姓名:班海波 申请学位级别:硕士 专业:动力机械及工程 指导教师:黄钟岳;迟万阳 20020621 摘要 参数设计法和Bezi er曲线综合利用成为平面叶栅设计的主导方法:小径高比的叶片采用静叶片的正倾斜的方法能够有效地控制流道内部的径向二次流和叶栅顶部的分离流动:高膨胀比超I临界涡轮动叶顶部采用缩放通道能够增加通流能力和降低叶栅出口的激波强度:采用上述方法和措施,设计出两套新型跨音速超临界涡轮。然后用Fine EURANUS/turbo解算程序,采用动静叶栅联算方式,对两种新设计的涡轮进行三维粘性流场分析,得到涡轮级内的压力、速度,焓、熵等分布结果。根据计算分析结果对涡轮叶片进行优化设计。 关键词:高膨胀比:涡轮:动静叶栅CFD联算:三维流场分析:优化 Abstract Parameter design method with Bezier curve is the main method of creating blade method of forward leaning stator blade,which can effectively control the radial second flow and the top separate flow,is applied to the design of the small diameter—height ratio channel is adopted to the rotor blade top in the condition of high expansion ratio and super critical flow to improve the mass flow and reduce the shock wave new types of transonic turbines were designed by means of the above measures and 3-D numerical simulation system,based on the flow—analyzing program Fine EURANUS/Turbo,has been used to analyze the flow in the two new types of getting the distribution results of pressure,velocity,entropy,enthalpy and other parameters by means of stator/rotor simulations have been carried out repeatedly to optimize the geometry of the blades on the basis ofthe calculation and analysis Keywords:High expansion ratio;Turbine design;Rotor/stator interaction;Numerical simulation;Optimization 高膨胀比跨音速涡轮的设计研究 第一章绪论