舌形挡板变截面涡轮（VGT）的研究

A Study on Tongue-Shaped Fender VGT

由模拟试验得到的舌形ＶＧＴ蜗壳内的流动模型和进出口的速度系数，为该产品的设计和结构优化提供了理论依据。在匹配试验中总结了多种效应的相互影响和渗透，提示了舌形ＶＧＴ的发展前景。

In this article, by means of simulated test, the authors obtain the flow model and the velocity coefficients of exit and entrance in the tongue-shaped VGT turbine-casing, which can provide a theoretical basis for optimum structure and design of the products. Through matching test, the authors sum up the interaction of many kinds of effects and bring to light the developing prospect of the tongue-shaped VGT.