Numerical simulation of flow past a circular base on PANS methods

[摘要] A nonlinear partially averaged Navier-Stokes (PANS) method based on RNG k- turbulence model is evaluated by a moderately high Reynolds number turbulence flow past a circular cylinder. The ratios of unresolved-to total kinetic energy (fk) and unresolved-to-total disspation (f) for PANS method is sensitive to the simulation result. Simulation results based on different fk are compared with the experimental data. The quantities including mean streamline velocity, mean normal velocity, streamlines and et al. are analyzed. The computational result is reasonable when fkis less than 0.6. The PANS method can be used in the simulation of high Reynolds number turbulence flow.

[发布机构] Beijing Institute of Control Engineering, Beijing; 100090, China^1;State Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing; 100084, China^2

[效力级别] 工业技术 [学科分类] 工业工程学

[关键词] Computational results;High-Reynolds-number turbulence;Partially averaged navier stokes;Total kinetic energy