华中科技大学学报（自然科学版）2024，Vol.52Issue(1)：59-65,7.DOI:10.13245/j.hust.24010401
SPS在SPH模拟黏性流动问题中的应用
The application of SPS in the simulation of viscous flow by SPH method
摘要
Abstract
Aiming at the problem that the Reynolds number cannot be accurately defined for the traditional smooth particle dynamics(SPH),the SPS-δ-SPH method was proposed by using the sub particle scale(SPS)turbulence model to deal with the fluid viscosity.The 2D flow around a cylinder at different Reynolds numbers was simulated with the viscosity treatment by using artificial viscosity,laminar viscosity and SPS turbulent viscosity respectively.The variation of hydrodynamic coefficient under different viscosity treatment methods were systematically analyzed and compared with the calculation results of relevant literatures.The results calculated by SPS model were close to the experimental values at lower Reynolds number,as well as the results were stable at a higher Reynolds number,which showed that the SPS-δ-SPH method is suitable for viscous flow problems.Furthermore,the SPS-δ-SPH I is applied to simulate the 3D flow around a surface piercing cylinder and the calculation results with higher accuracy are obtained.The research results provide certain reference value for solving related problems in the field of marine engineering.关键词
光滑粒子流体动力学/黏性流动/SPS湍流模型/水动力系数/三维圆柱绕流Key words
smoothed particle hydrodynamics(SPH)/viscous flow/sub particle scale(SPS)turbulence model/hydrodynamic coefficient/3D flows around cylinder分类
建筑与水利引用本文复制引用
杨彩虹,管延敏,康庄,周利..SPS在SPH模拟黏性流动问题中的应用[J].华中科技大学学报（自然科学版）,2024,52(1):59-65,7.基金项目
国家自然科学基金资助项目(51809124) （51809124）
国际科技合作重点项目计划(51911530156). （51911530156）
