摘要
研究了将Navier-Stokes方程中黏性项简化为黏性彻体力的建模方法,并将该模型加入已有的计算流体力学(CFD)程序中,实现了用三维欧拉方程加黏性彻体力模型快速模拟叶轮机三维非定常流动的方法.使用该方法对进气周向总压畸变条件下的某双级压气机非定常流场进行了模拟,并与雷诺平均的Navier-Stokes(RANS)程序的计算结果进行了对比,结果表明,基于黏性彻体力模型的方法能以很少的计算资源给出与RANS模拟基本相当的计算结果.
The modeling method of viscous terms of Navier-Stokes equations using distributed viscous body forces was investigated.Then a fast calculation code for the three-dimensional（3-D）unsteady flow in turbomachine was developed,by solving 3-D unsteady Euler equations with the distributed viscous body force model.The code was used to simulate the unsteady flow in a two-stage compressor under circumferential total pressure inlet distortion,and the results were compared with Reynolds averaged Navier-Stokes（RANS） results.This demonstrates that,in the simulation of the unsteady flow in the multi-stage compressor under inlet distortion,the results obtained by the distributed viscous body force model agree well with the RANS results,with substantially less computational cost.
出处
《航空动力学报》
EI
CAS
CSCD
北大核心
2011年第1期128-135,共8页
Journal of Aerospace Power
基金
航空科学基金(2009ZB51022)
关键词
黏性彻体力模型
进气畸变
三维非定常流
多级压气机
压气机稳定性
distributed viscous body force model
inlet distortion
three-dimensional（3-D）unsteady flow
multi-stage compressor
compressor stability
