Direct numerical simulations of turbulent channel flows with moving wall

摘要：

The influence of spanwise moving wall on turbulent channel flows is investigated using direct numericalsimulations. The DNS was performed using the standard spectral method. Three cases with the spanwise wallvelocity W=0, m U and 2 m U are simulated at constant flow rate. The results show that spanwise moving wallinduce the skin friction increasing. The second-order turbulence statistics such as root-mean-square velocityfluctuations, Reynolds shear stress and root-mean-square vorticity fluctuations are substantial increase with spanwisevelocity increasing. It is also observed that the root-mean-square velocity fluctuations become more even across thechannel with spanwise velocity increasing.

关键词： channel turbulence direct numerical simulations spanwise moving wall

作者: X.Wan S.W.Ma J.B.Zhang C.H.Li

作者单位: School of Aeronautic Science and Technology, Beijing University of Aeronautics and Astronautics, Bei School of Astronautics,Beijing University of Aeronautics and Astronautics,Beijing,100083 China

会议类型: 国际会议

会议名称: The Fifth International Conference on Fluid Mechanics(第五届国际流体力学会议)

会议地点: 上海

会议语种:英文

在线出版日期: 2007-08-15（万方平台首次上网日期，不代表论文的发表时间）