动态探针测试系统的开发和应用

An advanced measuring system in the world for unsteady flow field with combined three-hole probe of which the structure can be easily made and maintained has been developed. Thestructure of combined probe, calibration method, measuring system of dynamic characteristicfor probe, flow measuring system and method have been described in detail in this paper..It has been probed by the two examples successfully using the measuring system in pumpresearch that this system plays an important role in turbomachiney research.

诱导轮形状对汽蚀特性的影响

作者通过对两个叶片的平板螺旋形诱导叶轮的汽蚀特性和叶轮内空泡发展进行了测试和可视化观察 ,发现随着吸入压力的降低 ,两个叶片上原来同样发展的空泡之间有时会失去平衡 ,出现一个叶片的空泡急剧缩小 ,而另一个叶片空泡随之增大 ,这种交错叶片空泡现象 ,并有可能导致扬程的急速下降。在此基础上 ,作者进一步对叶片数 ,叶片长度不同的 4种诱导叶轮进行了测试 ,弄清了叶轮几何形状对上述现象发生和汽蚀性能的影响 ,并对其原因作了初步的探讨。

离心泵叶轮参数对进口回流的影响

本文对不同叶片进口角、叶片数、不同叶顶间隙的开式和闭式离心叶轮共12种叶轮的进口流场和回流发生情况进行了探针的动态测试和可视化观察．弄清了上述叶轮参数对进口回流初始流量和进口流场的影响．