一、问题的提出近代科技的发展对叶轮机械的测试技术提出了更高的要求。比如在压气机叶片流道和扩压器等一些通流部件中,要求由一些宏观的,平均的测量进入到微观的、当地的测量,从而为叶轮和其它通流部件的设计提供有用的依据。热线风速仪作为流体微观流动结构测量的 First, the issue put forward The development of modern science and technology on the impeller testing technology put forward higher requirements. For example, some through-flow components such as compressor vanes and diffusers require some macroscopic, averaging measurements to enter microscopic, local measurements to provide a useful basis for the design of impellers and other throughflow components . The hot wire anemometer is measured as a fluid microstructure