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1、前言 涡轮机械内部流动受到由流道形状、粘性,哥氏惯性力和离心惯性力所造成的二次流的影响,而呈现出三元复杂状态,往往和理论予测的结果不符。因此,为了得到更好的设计和改善性能的依据,就要进行很多实验研究。流动的可视化是实验研究的有力手段,可是在实际的涡轮机械内部,流体的流速高,而且不平稳,流道形状也复杂,所以能够采用可视化法是不太多的。下面,在流动的可视化诸法中简单介绍一下涡轮机械所采用的方法。
1, Foreword Turbine internal flow by the flow channel shape, viscosity, Coriolis inertia and centrifugal inertia force caused by the secondary flow, and showed a ternary complex state, often inconsistent with the theory to predict the results. Therefore, in order to get a better design and improve the performance of the basis, it is necessary to conduct a lot of experimental study. The visualization of flow is a powerful tool for experimental research. However, the flow velocity of the fluid in the actual turbomachinery is high, unstable and the shape of the flow channel is complicated. Therefore, the visualization method is not too large. Next, a brief introduction to the methods used by turbomachinery in the visualization of mobile flows.