隐式多重网格法求解叶轮机械三维跨声速湍流流场

Solving 3-D Transonic Turbulent Flow Field in Turbomachinery with Implicit Multigrid Scheme

本文提出一种高效率求解叶轮机械三维跨声速湍流流场的隐式多重网格算法。它以矢通量分裂格式为基础，采用ＦＡＳ型多重网格加速技术。湍流模式采用Ｂａｌｄｗｉｎ－Ｌｏｍａｘ模式。典型三维跨声速湍流流场的计算表明：该多重网格加速技术具有很好的加速效果，并且计算与实验符合较好。

An implicit multigrid schemc for solving efficiently three dimensional transonic turbulent flow field in turbomachinerv is offered in this paper.Based on flux-vector splitting, FAS multigrid method is adopted to accelerate the iteration process.Baldwin-Lomax model is adopted to give turbulent viscosity μ_t.Computation of typical three-dimensional transonic turbulent flow indicates: this multigrid tcchnique based on implicit flux-vector splitting scheme has excellent effort for saving computation time,computation result is coincident well with experiment.