首页> 外文会议>ASME(American Society of Mechanical Engineers) Turbo Expo vol.4; 20060506-11; Barcelona(ES) >ENHANCED GAS TURBINE PERFORMANCE SIMULATION USING CFD MODULES IN A 2D REPRESENTATION OF THE LOW-PRESSURE SYSTEM FOR A HIGH BYPASS TURBOFAN
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ENHANCED GAS TURBINE PERFORMANCE SIMULATION USING CFD MODULES IN A 2D REPRESENTATION OF THE LOW-PRESSURE SYSTEM FOR A HIGH BYPASS TURBOFAN

机译:在高旁路涡轮增压器低压系统的二维表示中,使用CFD模块模拟燃气轮机性能

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The improvement of performance simulation for gas turbines has been approached in very different ways. In particular for high bypass turbofans, efforts have been made to investigate radial flow distributions. The aim of the presented study was to combine a conventional characteristics based performance code using a 2d representation of the fan with 2d representations of the adjoining intake and bypass system. Computational Fluid Dynamics was the chosen tool to generate modules for the intake, bypass duct and bypass nozzle. This approach required geometry data. A design procedure to generate these components in an axi-symmetric meridional fashion and the numerical requirements for the CFD modules were developed. Typical component performances were predicted and the combined use of CFD and the performance code showed that in terms of performance, the inclusion of intake and bypass losses and the radial inlet distribution was worth considering. In particular however, the required numerical effort was significant.
机译:燃气轮机性能模拟的改进方法非常不同。特别是对于高旁通涡轮风扇,已经努力研究径向流分布。提出的研究的目的是结合使用风扇的2d表示与相邻进气和旁通系统的2d表示的基于常规特性的性能代码。计算流体动力学是为进气,旁通管和旁通喷嘴生成模块的选择工具。这种方法需要几何数据。开发了以轴对称子午线方式生成这些组件的设计程序,以及CFD模块的数值要求。可以预测典型的组件性能,并且将CFD与性能代码结合使用表明,就性能而言,考虑进气和旁通损耗以及径向进气口分布是值得考虑的。但是,特别是所需的数字量很大。

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