The Influence of Advection Schemes and Turbulence Closure Models on Drag Coefficient Calculation Around a Circular Cylinder at High Reynolds Number  

作　　者：LIN Zhenhua ZHAO Dongliang SONG Jinbao 

机构地区：[1]College of Physical and Environment Oceanography, Ocean University of China, Qingdao 266100, P. R. China [2]Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, P. R. China [3]Key Laboratory of Ocean Circulation and Waves, Chinese Academy of Sciences, Qingdao 266071, P. R. China

出　　处：《Journal of Ocean University of China》2011年第3期229-233,共5页中国海洋大学学报（英文版）

基　　金：the support by the National Basic Research Program of China(Nos.2009CB421201,2011CB403501);the National Natural Science Foundation of China(Nos.40876012,41076007)

摘　　要：Different advection schemes and two-equation turbulence closure models based on eddy viscosity concept are used to compute the drag coefficient around a circular cylinder at high Reynolds number (106).The numerical results from these simulations are compared with each other and with experimental data in order to evaluate the performance of different combinations of advection scheme and two-equation turbulence model.The separate contributions from form drag and friction drag are also ana-lyzed.The computational results show that the widely used standard k-ε turbulence closure is not suitable for such kind of study,while the other two-equation turbulence closure models produce acceptable results.The influence of the different advection schemes on the final results are small compared to that produced by the choice of turbulence closure method. The present study serves as a reference for the choice of advection schemes and turbulence closure models for more complex numerical simulation of the flow around a circular cylinder at high Reynolds number.Different advection schemes and two-equation turbulence closure models based on eddy viscosity concept are used to compute the drag coefficient around a circular cylinder at high Reynolds number （106）.The numerical results from these simulations are compared with each other and with experimental data in order to evaluate the performance of different combinations of advection scheme and two-equation turbulence model.The separate contributions from form drag and friction drag are also ana-lyzed.The computational results show that the widely used standard k-ε turbulence closure is not suitable for such kind of study,while the other two-equation turbulence closure models produce acceptable results.The influence of the different advection schemes on the final results are small compared to that produced by the choice of turbulence closure method. The present study serves as a reference for the choice of advection schemes and turbulence closure models for more complex numerical simulation of the flow around a circular cylinder at high Reynolds number.

关 键 词：circular cylinder advection schemes turbulence models drag coefficient 

分 类 号：O357[理学—流体力学] O357.5[理学—力学]