A study on the effect of a underbody shape of rear part of a vehicle on pressure distribution of downstream using PIV

디지털 화상처리를 이용한 자동차 후부의 하면형상 이 압력분포에 미치는 영향

In order to reduce a aerodynamic drag of the rear, body, effects of rear lower end configuration of a vehicles were investigated by measuring the pressure distribution, visual flow phenomena by the use of digital image processing technique. The use of flow visualization in recent years has improved the general understanding of structure of complex flow and has yielded valuable information for analyzing fluid flow. As the results, it was found that the shape of rear lower part vehicles not only effected on the pressure distribution of the rear part of the vehicle but also difference of the flow phenomena.