Chew John W, Hills Nicholas J
Fluids Research Centre, School of Engineering, University of Surrey, Guildford, Surrey GU2 7XH, UK.
Philos Trans A Math Phys Eng Sci. 2007 Oct 15;365(1859):2587-611. doi: 10.1098/rsta.2007.2022.
Considerable progress in development and application of computational fluid dynamics (CFD) for aeroengine internal flow systems has been made in recent years. CFD is regularly used in industry for assessment of air systems, and the performance of CFD for basic axisymmetric rotor/rotor and stator/rotor disc cavities with radial throughflow is largely understood and documented. Incorporation of three-dimensional geometrical features and calculation of unsteady flows are becoming commonplace. Automation of CFD, coupling with thermal models of the solid components, and extension of CFD models to include both air system and main gas path flows are current areas of development. CFD is also being used as a research tool to investigate a number of flow phenomena that are not yet fully understood. These include buoyancy-affected flows in rotating cavities, rim seal flows and mixed air/oil flows. Large eddy simulation has shown considerable promise for the buoyancy-driven flows and its use for air system flows is expected to expand in the future.
近年来，计算流体动力学（CFD）在航空发动机内部流动系统的开发和应用方面取得了显著进展。CFD在工业中经常用于评估空气系统，并且对于具有径向通流的基本轴对称转子/转子和定子/转子盘腔的CFD性能已得到广泛了解和记录。三维几何特征的纳入和非定常流动的计算正变得越来越普遍。CFD的自动化、与固体部件热模型的耦合以及将CFD模型扩展到包括空气系统和主燃气路径流动是当前的发展领域。CFD还被用作研究工具来研究一些尚未完全理解的流动现象。这些现象包括旋转腔中受浮力影响的流动、轮缘密封流动以及空气/油混合流动。大涡模拟已显示出在浮力驱动流动方面具有相当大的潜力，预计其在空气系统流动中的应用未来还会扩大。
