基于试验成本等原因，常需要把工作在高马赫数下的叶片放到低速风洞进行吹风试验获得叶型的基本气动参数，这样就需要对叶型进行重新设计来弥补由于高低速气体压缩性改变导致的变化。本文对具有高升力系数的低压涡轮叶片 T106A 进行重新设计，使其在低速状态下能够匹配在高速流场中的载荷分布。在进行叶片的再设计过程中，采用改进全局优化遗传算法。在获得叶片中径位置匹配的同时，对叶顶间隙处的高低速流场进行对比分析，提出对于叶顶间隙处匹配的相关方法。
Generally speaking, in order to determine the cascades performance easily and reduce the costs of experiments, it is convenient to carry out tests in low speed tunnels with modified and scaled shape in order to compensate the compressibility. The low pressure turbine airfoil T106A has been studied in low speed conditions in this paper, and the airfoil has been modified to match the loading distribution at the low speed with high speed by optimization procedure based on genetic algorithm method. In order to matching the leakage flow between the low speed with the high speed, the nonsmooth blade top profile has been proposed.
2016,38(7): 54-59 收稿日期：2016-04-13
DOI：10.3404/j.issn.1672-7619.2016.07.012
分类号：TK472
作者简介：刘海建(1984-),男,工程师,研究方向为叶轮机械振动噪声。
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