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이차원 운송체 모형에서 후류 교란자를 이용한 항력 감소
이동건(Dongkon Lee),최진(Jin Choi),전우평(Woo-Pyung Jeon),김정래(Jeonglae Kim),한성현(Seonghyeon Hahn),최해천(Haecheon Choi) 대한기계학회 2003 대한기계학회 춘추학술대회 Vol.2003 No.11
A wind-tunnel experiment is carried out to examine the applicability of a new passive device, wake<br/> disrupter, to flow over a model vehicle for drag reduction. The wake disrupter is a small-size rectangular body<br/> attached to a part of the trailing edge of the model vehicle, designed to perturb an essentially two-dimensional<br/> nature of wake. A pair of wake disrupter is mounted on the mid-span at the upper and lower trailing edges.<br/> From a parametric study about the size of wake disrupter, it is found that the optimum disrupter increases the<br/> base pressure by about 20%. Large eddy simulation is also conducted to confirm the experimental result, and<br/> shows that the wake is indeed disrupted by the present device.