超音速ノズルにおける弱い垂直衝撃波と乱流境界層の干渉 : 第2報,流れの振動特性

概要

論文の詳細を見る
The characteristics of flow oscillation induced by the interaction of weak normal shock wave with turbulent boundary layer in a supersonic nozzle were investigated experimentally. The fluctuations of wall static pressures with time were measured throughout the interaction region, and the data were analyzed to obtain the root-mean square values and the power spectral density functions. From the variation of power spectral density function distribution in the streamwise direction, it is concluded that the flow oscillation induced by the interaction is independent of the pressure fluctuation in the boundary layer upstream of the interaction region, and that the oscillation is due to the fluctuation of effective cross-sectional area of flow behind the shock wave caused by the unsteadiness of boundary layer in the interaction region.
一般社団法人日本機械学会の論文
1995-06-25