Research Initiation Award: New Multigrid Navier-Stokes Methods for Predicting Unsteady Flows in Turbomachinery Cascades

9410800刘这项研究致力于发展使用先进的两方程湍流模型来求解纳维斯托克斯方程的新方法。这些新方法将允许预测非定常气动载荷，因此将在涡轮机和压缩机的设计中得到应用。目前在这些领域的知识是基于恒定流模型，而实际流动是高度不稳定的。所提出的工作具有解析和数值两个部分，包括：流量受限压力分裂耗散模型和k-w湍流模型的发展，大规模并行计算机的算法，以及求解Navier-Stokes方程和湍流方程的新技术。***

9410800 Liu This research seeks to develop new methods to solve the Navier-Stokes equations using advanced two-equation turbulence models. These new methods will permit the prediction of unsteady aerodynamic loads and hence will have applications in the design of turbines and compressors. Current knowledge in these areas is based on steady flow models whereas the actual flows are highly unsteady. The proposed work has both analytical and numerical components including: development of a flux-limited pressure split dissipation model and k-w turbulence model, algorithms for massively parallel computers and new techniques for solving both the Navier Stokes equations and the turbulence equations. ***