ジェット吹出しの縦渦発生装置における吹出しロアスペクト比が境界層制御に与える影響(流体工学,流体機械)

概要

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The vortex generator jets can achieve the adaptive control by adjusting properly the jet speed in response to flow situations. The vortex generator jet method may accomplish separation control only when it is necessary, and therefore it is useful for both design and off-design conditions. In this study, the effect of vortex generator jets on separation control is investigated for three types of rectangular orifices with aspect ratios AR=0.16, 1 (square) and 6.4. The rectangular orifice with AR=0.16 set the long side of the orifice in the streamwise direction and the long side turned to the spanwise direction for AR=6.4. For the rectangular orifices with AR=6.4, the vortices become stronger and exist at lower vertical positions in comparison with those for the other orifice types. Therefore, the rectangular orifices with AR=6.4 promote the boundary layer mixing and make effective the separation control.
一般社団法人日本機械学会の論文
2005-02-25