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首页> 外文会议>American Society of Mechanical Engineers(ASME) Turbo Expo vol.5 pt.A; 20040614-17; Vienna(AT) >COMPRESSIBLE FLOW IN INLET GUIDE VANES WITH MECHANICAL FLAPS
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COMPRESSIBLE FLOW IN INLET GUIDE VANES WITH MECHANICAL FLAPS

机译：带有机械襟翼的进口导流叶片中的可压缩流量

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摘要

The classical type of inlet guide vanes consists of uncam-bered or slightly cambered profiles, the stagger angle of which can be varied. A more advantageous possibility of generating an angular momentum in front of the rotor of the first stage contains the application of inlet guide vanes with mechanical flaps. This configuration consists of uncambered profiles with mechanical flaps. In the present paper, flow physics is explained for this configuration and compared with the flow physics for the classical type of inlet guide vanes. The configuration with mechanical flaps is examined numerically for 20 deg. and 32 deg. flap angles. The emphasis lies on the description of the compressible flow phenomena, which become dominant if the Much number of the incoming flow gets close to the critical Mach number. An analytical estimation for the Mach number at the exit of the guide vanes is introduced and the results are discussed together with the results of the CFD simulations.
机译：入口导流叶片的经典类型包括未弯角或略微弯曲的轮廓，其交错角度可以改变。在第一级转子的前面产生角动量的更有利的可能性包括使用带有机械活门的进口导向叶片。此配置包括带有机械活门的无弧度轮廓。在本文中，对这种构造的流物理学进行了解释，并将其与传统类型的进口导流叶片的流物理学进行了比较。对带有机械襟翼的配置进行数字检查20度。和32度襟翼角度。重点在于对可压缩流动现象的描述，如果大量进入的流动接近临界马赫数，则该现象将占主导地位。介绍了对导叶出口处的马赫数的解析估计，并与CFD仿真结果一起讨论了结果。

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