0210 平板境界層における層流と乱流の界面構造に関する研究(OS2-2 乱流の計測・解析・制御,オーガナイズドセッション)
詳細
The streamwise interface between laminar and turbulent regions is experimentally investigated. Piezo ceramic actuators were used to introduce a turbulent region into the flat-plate boundary layer. A flow visualization experiment was carried out to investigate the flow structure at the laminar/turbulent interface. The spanwise correlations of velocity fluctuations inside the calmed region were obtained by applying the conditional sampling technique with an ensemble-averaged method. The results showed that the spanwise correlations are influenced by the frequency bandwidths of the filtered velocity fluctuations.
