主催: 一般社団法人 日本機械学会
会議名: 第97期流体工学部門講演会
開催日: 2019/11/07 - 2019/11/08
Opposition controlled fully developed turbulent flows along a thin cylinder are performed by means of direct numerical simulations. An influence of cylinder curvature on the skin-friction drag reduction effect by the classical opposition control (i.e., the radial velocity control) is mainly investigated. The curvature of cylinder affects the statistics of the flow; however, the control effect in the small curvature case is similar to that in channel flow. For large curvature, the drag is reduced even though the detection plane is located away the wall surface. The reduction rates of the present cases are larger than those in the channel flow.