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Hybrid Pressure Swirl Nozzle의 내부 유동 특성에 대한 유동해석
정태훈(Taehoon Jung),Reza Alidoost Dafsari,Foad Vashahi,이지근(Jeekeun Lee) 한국자동차공학회 2016 한국자동차공학회 학술대회 및 전시회 Vol.2016 No.11
In this study, a numerical simulation has been performed to investigate the flow characteristics of the specially designed pressure swirl nozzle. The commercial CFD code, Star-CCM, was used to simulate the internal flow behavior. The nozzle tested has the ability of modifying the swirl chamber length in accordance with the desired application. Therefore, the spray pattern changes from a hollow cone with wider angle to a full cone and narrower spray from minimum to maximum swirl chamber length, respectively. Distances of swirl chamber were varied, from 1.7mm to 3.7mm, with the intervals of 0.5mm. Flow structure for each configuration was analyzed and the compared with other cases. It was found that the velocity patterns including axial, radial and tangential components were affected by the change in the swirl chamber length in terms of peaks and radial distribution. However, the magnitude of discharge velocity was remained fairly constant.