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本文简单介绍了三套典型的跨音速涡轮叶栅的设计。比较了叶栅几何相似条件下进行的扇形环形叶栅、平面吹风、气水比拟三种试验方法所获得的结果,同时还与“时间推进有限面积法”的数值计算作了对比。对这三种试验手段的优缺点和可靠程度进行了初步评价。
This article briefly introduces the design of three typical transonic turbine cascades. Comparing the results of three test methods of fan-shaped cascade, plane blowing and gas-water ratio under the condition of similarity of cascades, the comparison with the numerical calculation of “time advance finite area method” is also made. The advantages and disadvantages of these three test methods and the reliability of a preliminary evaluation.