Basic Investigation and Modeling of Three-Dimensional Two Phase Flow through a Compressor Cascade

通过压缩机叶栅的三维两相流的基础研究和建模

• 批准号: 312988552
• 负责人: Professor Dr.-Ing. Franz Joos
• 金额: --
• 依托单位: Institut für Thermodynamik der Luft- und Raumfahrt (ITLR)
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2016
• 资助国家: 德国
• 起止时间: 2015-12-31 至 2020-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/312988552?language=en
• 关键词: Basic; Investigation; Modeling; Three; Dimensional

For industrial gas turbines the injection of water sprays at the inlet of the compressor is used today for power augmentation, which is used for peak load and in addition for the compensation of power fluctuations due to the usage of wind and solar energy. The injected water droplets evaporate during the flight through the compressor and cool the flow. This reduces the compressor work and increases the usable power. In addition the efficiency might be increased also. However, the droplets can lead to massive erosion in the compressor. This is a result of the interaction between the droplets and the compressor blades. So there is a need for optimizing these processes, which is the focus of the here proposed project.The aim of the here proposed project lies in the development of a numerical tool, which is able to simulate reliably the three dimensional processes of water injection by considering all relevant fluid dynamical sub-processes. Both applicants can count for this on a large amount of previous work, which has been done for such processes for two-dimensional flows around compressor profiles. This work has shown that the process cannot fully been described in 2D and thus the investigation of different detailed 3D processes is needed. The experimental and numerical investigation, modelling and the consideration of these sub-processes are the focal point of the here proposed project.

对于工业燃气轮机，在压缩机入口喷射水雾如今用于增强功率，用于峰值负载，此外还用于补偿由于使用风能和太阳能而导致的功率波动。注入的水滴在通过压缩机的飞行过程中蒸发并冷却水流。这减少了压缩机的工作并增加了可用功率。此外，效率也可能会提高。然而，液滴会导致压缩机发生严重腐蚀。这是液滴和压缩机叶片之间相互作用的结果。因此，需要优化这些过程，这是本文提出的项目的重点。本文提出的项目的目的在于开发一种数值工具，该工具能够通过以下方式可靠地模拟注水的三维过程：考虑所有相关的流体动力学子过程。两位申请人都可以依靠大量先前的工作来实现这一点，这些工作已经针对压缩机轮廓周围的二维流动进行了此类处理。这项工作表明，该过程无法完全以 2D 方式描述，因此需要研究不同的详细 3D 过程。实验和数值研究、建模以及对这些子过程的考虑是本文提出的项目的重点。