航空发动机涡轮流动及噪声数值模拟

发展可靠、高效、低噪声的发动机是航空工业不懈的追求. 涡轮作为航空发动机核心部件之一. 其流动及换热问题始终是贯穿航空发动机设计、制造的核心问题. 随着航空发动机风扇和喷流噪声得到大幅控制, 涡轮噪声逐渐凸显. 并日益受到关注. 为推动航空发动机涡轮流动换热及噪声数值模拟方法的工程应用, 首先. 以航空发动机涡轮中复杂湍流及流动换热问题为主线. 分别阐述了旋转盘腔、旋转叶片流动及换热问题数值模拟的研究现状; 其次. 对航空发动机涡轮噪声研究现状进行分析. 总结了常用涡轮噪声预测方法和存在的问题. 在此基础上. 面向工程实际需求. 对航空发动机涡轮流动、换热与噪声数值模拟进行了展望.

Numerical simulations of aero-engine turbine flow and noise

The development of reliable, efficient and low noise engine is an unremitting pursuit of aviation industry. Turbine is one of the core components of aero-engine, and its flow and heat transfer are always the top issues throughout the design and manufacture. As the noise from the engine fan and jet has been greatly controlled, turbine noise has become more important and has gained extensive concerns. To stimulate the industrial usage of proposed numerical methods in turbine simulations, numerical methods and investigations of the complex turbulence flow, heat transfer and noise in aero-engine turbines are reviewed. Firstly, focus is placed on the state-of-art of flow and heat transfer simulation in rotating cavities and rotating blades. Secondly, the research status of aeroengine turbine noise is analyzed, and the numerical methods of noise prediction are reviewed. Based on this, suggestions on further development of numerical methods and specialized software for the simulation of turbine flow, heat transfer and noise are proposed.