To simulate the incompressible turbulent flows,two models,known as the simplified and highly stable lattice Boltzmann method(SHSLBM)and large eddy simulation(LES)model,are employed in this paper.The SHSLBM was develop...To simulate the incompressible turbulent flows,two models,known as the simplified and highly stable lattice Boltzmann method(SHSLBM)and large eddy simulation(LES)model,are employed in this paper.The SHSLBM was developed for simulating incompressible viscous flows and showed great performance in numerical stability at high Reynolds numbers,which means that this model is capable of dealing with turbulent flows by adding the turbulence model.Therefore,the LES model is combined with SHSLBM.Inspired by the less amount of grids required for SHSLBM,a local grid refinement method is used at relatively high Reynolds numbers to improve computational efficiency.Several benchmark cases are simulated and the obtained numerical results are compared with the available results in literature,which show excellent agreement together with greater computational performance than other algorithms.展开更多
基金J.Wu acknowledges the support of the National Natural Science Foundation of China(Grant No.12072158)the Natural Science Foundation of Jiangsu Province(Grant No.BK20191271)+1 种基金the Research Fund of State Key Laboratory of Mechanics and Control of Mechanical Structures(Nanjing University of Aeronautics and Astronautics)(Grant No.MCMS-I-0120G02)This work is also supported by the Priority Academic Program Development of Jiangsu Higher Education Institutions(PAPD).
文摘To simulate the incompressible turbulent flows,two models,known as the simplified and highly stable lattice Boltzmann method(SHSLBM)and large eddy simulation(LES)model,are employed in this paper.The SHSLBM was developed for simulating incompressible viscous flows and showed great performance in numerical stability at high Reynolds numbers,which means that this model is capable of dealing with turbulent flows by adding the turbulence model.Therefore,the LES model is combined with SHSLBM.Inspired by the less amount of grids required for SHSLBM,a local grid refinement method is used at relatively high Reynolds numbers to improve computational efficiency.Several benchmark cases are simulated and the obtained numerical results are compared with the available results in literature,which show excellent agreement together with greater computational performance than other algorithms.
