FINITE ELEMENT ANALYSIS OF VISCOUS FLOW PAST A ROTATING SPHERE

作     者：Wang, Y.X. Lu, X.Y. Zhuang, L.X. 

作者机构：Dept. of Modern Mech. Univ. of Sci. and Technol. of China Hefei 230026 China 

出 版 物：《Journal of Hydrodynamics》 (水动力学研究与进展B辑（英文版）)

年 卷 期：2001年第13卷第2期

页      面：80-85页

核心收录：

学科分类：080704[工学-流体机械及工程] 080103[工学-流体力学] 08[工学] 0807[工学-动力工程及工程热物理] 0805[工学-材料科学与工程（可授工学、理学学位）] 0802[工学-机械工程] 0701[理学-数学] 0702[理学-物理学] 0812[工学-计算机科学与技术（可授工学、理学学位）] 0801[工学-力学（可授工学、理学学位）] 

基　　金：ThisworkwassupportedbytheNaturalScienceFoundationofChina (5 9776 0 11 197892 0 1) theHundredTalentsPro jectofCASandtheFundingfromtheNationalLaboratoryofMicrogavityofCAS 

主　　题：Finite element method Navier Stokes equations Numerical methods Three dimensional 

摘      要：Viscous flow past a rotating sphere with a constant rotating speed about an axis aligned with the free stream was investigated numerically by solving the three-dimensional Navier-Stokes equations using the finite element method. To elucidate the character of this flow in the near wake, the flow structures at different Reynolds numbers and rotating speeds are examined. The axisymmetric and non-axisymmetric flow structures were observed at Re=200 and 250, respectively, which rotate as a whole around the rotating axis steadily. At Re=300, the vortex shedding appears and the wake becomes more complicated. At low rotating speeds, the flow is dominated by the vortex shedding at higher Reynolds numbers. As the rotating speed increases, the rotating effect gets stronger and the interaction between the rotating action and the vortex shedding results a swirling vortex pattern in the near wake of the sphere.