摘要
基于定常Denton程序发展了二维定常、非定常、非线性谐波法计算程序,以二维跨声压气机叶栅为例,通过详细对比其定常、非定常和非线性谐波法的计算结果,包括确定应力场和叶片表面速度分布等,验证了非线性谐波法具有建模精度较高的优点的同时,也分析了该方法的不足,包括一些难以克服的主要误差来源,以及计算时间较长等弱点;并指出了掺混面处理对于非线性谐波法的重要性.
A two-dimensional steady, unsteady and nonlinear harmonic method （NHM） RANS code was developed based on Denton steady code. Then the code was used to simulate a two dimensional transonic compressor cascade by the above three methods and the results were compared on deterministic stress fields, blade surface velocity and other aspects. The comparison indicates that NHM presents high precision on modeling deterministic stresses and mixing-plane treating plays an important role in the simulations. The shortcomings of NHM were also discussed, including main unconquerable origins of modeling error and long computational time.
出处
《航空动力学报》
EI
CAS
CSCD
北大核心
2008年第4期680-686,共7页
Journal of Aerospace Power
关键词
航空、航天推进系统
确定应力
非线性谐波法
非定常计算
aerospace propulsion system
deterministic stresses
nonlinear harmonic method
unsteady simulation
