側壁付着形流体素子における噴流の切換え機構 : 制御流の立上り時間が小さし場合

概要

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The switching process in a wall-attachment fluidic device has been assumed to be a quasi-steady flow, because the transport time of fluid particles from the nozzle to the splitter is short compared to the switching time. This assumption depends on the condition that the time constant of the control flow is approximately equivalent to the switching time. In this paper, the switching mechanism of a jet by the control flow with a small rise time is analyzed by flow visualization and measurement of the switching time in an enlarged model. The switching time decreased with increasing control pressure though it has an asymptotic value. However, the switching time normalized by the virtual time constant of the control flow increased with increasing control pressure. Also, a large control pressure reduced the effect of the opposite wall set-back on the switching of the jet.
一般社団法人日本機械学会の論文
1987-07-25