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首页> 外文会议>ASME turbo expo >A VERSATILE DESIGN OF A CONTROLLED SWIRL DISTORTION GENERATOR FOR TESTING GAS TURBINE ENGINES
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A VERSATILE DESIGN OF A CONTROLLED SWIRL DISTORTION GENERATOR FOR TESTING GAS TURBINE ENGINES

机译：用于测试燃气轮机发动机的控制旋流发生器的多功能设计

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Inlet swirl distortion has recently become a major area of concern in the gas turbine engine community. Gas turbine engines are being installed in embedded installations that are downstream of increasingly complicated inlet systems, such as those used in Unmanned Aerial Vehicles (UAVs). These inlet systems can produce complex swirl patterns in addition to total pressure distortion. The effect of swirl distortion on engine or compressor performance and operability must be evaluated. The gas turbine community is developing methodologies to measure and characterize swirl distortion. There is a strong need to develop a mechanism for generating prescribed swirl distortion intensities and patterns for testing compression system sensitivity to swirl distortion. Several devices such as delta wings or complex turning vanes have been proposed and used to generate swirl distortion with limited success. This paper presents a versatile swirl distortion generator design that produces a wide range of swirl distortion patterns of a prescribed strength, including bulk swirl, 1/rev, and 2/rev patterns. It also creates different paired swirl patterns, varying from equal and opposite "twin swirls" to offset swirl pairs. This paper describes the design of the swirl generator. Computational Fluid Dynamics (CFD) results are presented along with some test data which illustrate how the swirl generator functions and how altering the swirl generator configuration can produce different swirl distortion patterns.
机译：入口漩涡畸变最近成为燃气轮机发动机群落中担心的主要领域。燃气涡轮发动机安装在嵌入式的入口系统下游的嵌入式装置中，例如在无人机航空车辆（无人机）中使用的那些。除了总压力变形之外，这些入口系统还可以产生复杂的旋流图案。必须评估涡流变形对发动机或压缩机性能和可操作性的影响。燃气轮机社区正在开发方法，以测量和表征涡流变形。存在强烈需要开发一种用于产生规定的涡流变形强度和模式，以测试压缩系统敏感性以旋流变形。已经提出了诸如Delta翅膀或复杂转动叶片的几种装置，并用于产生具有有限的成功的涡流变形。本文介绍了一种多功能旋流变形发生器设计，可产生规定强度的宽范围旋流畸变模式，包括散装旋流，1 / Rev和2 / Rev模式。它还产生不同的成对旋流图案，从等于和相反的“双旋流”来抵消旋流对。本文介绍了旋流发生器的设计。计算流体动力学（CFD）结果以及一些测试数据，该测试数据示出了涡流发生器功能如何以及改变旋流发生器配置的方式如何产生不同的涡流模式。

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