时间倾斜法在叶轮机械非定常模拟中的应用  

Application of time-inclined method on the unsteady simulation of turbomachinery

作　　者：高丽敏[1,2] 李萍[1,2] 陈璇[1,2] 周莉[1] 

机构地区：[1]西北工业大学动力与能源学院,西安710072 [2]先进航空发动机协同创新中心,北京100191

出　　处：《航空动力学报》2015年第11期2630-2637,共8页Journal of Aerospace Power

基　　金：国家自然科学基金(51076132);新世纪优秀人才支持计划(NCET-10-0078)

摘　　要：应用时间倾斜法处理非定常模拟中前后两排叶片栅距不相等的问题,通过对流动控制方程的时空转换,发展了相邻两叶排任意转速下非等栅距的非定常时间精确算法,使该方法拓展为适用于超常规动/动结构叶轮机械内的非定常流动计算.在此基础上编写了完整的时间倾斜法计算程序与约化算法计算程序.对某进口导叶/转子之间静/动干涉的非定常流场进行的计算表明:与约化算法相比,时间倾斜法采用原始单通道模型,真实地反映了流场的非定常性;同时,计算量仅为全通道模拟的2/41,大大节约了计算成本.The method of time-inclined was applied to deal with arbitrary pitch ratio for unsteady simulations. Through time and space conversion of the flow control equation, the unsteady time exact algorithm of two adjacent blade rows with unequal pitch at any speed was developed, so that the method was expanded to be suited to the unsteady flow calcula- tion of turbomachinery with extraordinary rotor/rotor construction. On this basis, the pro- grams of time-inclined algorithm and domain scaling algorithm were both written. The un- steady flow calculation of the stator/rotor interaction between an inlet guide vane and rotor shows that compared with domain scaling algorithm, time-inclined method using the original single-channel model truly reflects the unsteady flow field; at the same time, the amount of calculation is only 2/41 of the total channel simulation, greatly saving the cost calculation.

关 键 词：时间倾斜 叶轮机械 非等栅距 区域约化 非定常 

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]