이차원 코안다 노즐제트 의 방향성 에 관한 실험적 연구

Abstract

Multi directional property of a coanda nozzle jet formed after the interaction of two opposing curved wall jets past a circular cylinder is investigated. It is observed that the flow direction of the coanda nozzle jet, which is very stable, can easily be changed to another stable direction by simply applying disturbance on the nozzle exit, without changing any experimental condition The final flow direction can be explained in terms of location of interaction region and momentum ratio of the two jets.