应用单向法的气冷涡轮气热弹耦合数值研究  

Numerical Research of Air Cooling Turbine Using One Way Aerodynamic and Thermal Mechanical Conjugate Method

作　　者：陈凯[1] 黄洪雁[1] 韩万金[1] 冯国泰[1] 

机构地区：[1]哈尔滨工业大学458信箱,哈尔滨150001

出　　处：《科学技术与工程》2010年第3期726-732,共7页Science Technology and Engineering

基　　金：国家自然科学基金(50576017)资助;国家自然科学基金(50476028)资助

摘　　要：对采用径向对流冷却的NASA C3X叶片进行了单向气热弹耦合数值模拟。气热耦合计算比较了在考虑转捩现象的对于计算结果的影响,同时考虑了温度变化引起的气体属性变化对气热耦合计算的影响,并与NASA报告中的实验结果进行了对比。结果表明,雷诺应力模型对于转捩过程的捕捉能力有限。应用气热耦合的计算结果作为有限元的输入条件,使用ANSYS研究了外部流体冲击场叠加叶片温度场后的总应力和总变形,使用单向法实现了气动、热应力场的多场耦合研究,对于涡轮设计以及寿命预测有一定的借鉴意义。NASA C3X blade is studied which employed one way aerodynamic and thermal mechanical conjugate method. Compares different turbulent models which considering capability to simulate transition process. Fluid property which significantly depend on temperature was also involved. The calculation results also made contrast with experiment data which derive from NASA report. The results indicated that Reynolds stress model has certain capability to simulate transition process. The CFD results was transferred to the FEA software ANSYS. Equivalent stress and total deformation were calculated which conjugated with impingement force on vane surface and temperature field. The multi flied conjugated is carried out using one way coupling method which is particular meaningful to the turbine design and life prediction.

关 键 词：气热弹耦合 多场耦合 气冷涡轮 数值模拟 

分 类 号：V231.3[航空宇航科学与技术—航空宇航推进理论与工程]