General study of fluid forces and dynamic characteristics due to unsteady internal flow in turbomachine

在国内几所大学，通过实验和分析的方法，研究了由非定常内流引起的涡轮机内的流体力和振动特性。本文研究和讨论了转子-定子相互作用、旋转失速、两相流、旋转空泡、空泡流以及转子动力对轴振动的响应所引起的非定常流动，特别是在非设计流量下。研究结果对提高高速高性能发动机的可靠性和安全性具有重要意义。在未来，对这些问题的几个研究是必要的更先进的机器，使合作和持续的研究。

Fluid forces and vibration characteristics caused by the unsteady internal flow in turbomachines were studied experimentally and analytically in several universities. Unsteady flow in turbomachines, in particular at off-design flow rate, due to the rotor-stator interaction, rotating stall, two-phase flow, rotating cavitation, cavitating flow, and rotordynamic forces as the response of the shaft vibration were examined and discussed. The present results could contribute for the reliance and the safety in high-speed and high-performance turbomachines. In future, several studies about these problems are necessary for more advanced machines, so that cooperation and continuous study are expected.