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Air-Shroud 인젝터의 분무 특성에 관한 실험적 연구
정해영(H.Y.Jeong),이기형(K.H.Lee),이창식(C.S.Lee),김병수(B.S.Kim),홍진성(J.S.Hong) 한국자동차공학회 1998 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1998 No.5_1
A this experimental study is executed to analyze spray characteristics for air-shrouded injector with different shrouding air pressure. Since spray parameters are very important for the EGI Engine performanc, spray parameters including spray separation angle, targeting capability, penetration, SMD, and atomization characteristics are visualized and analyzed by digital image processing method.<br/> Considerable spray characteristics to design air-shroud injector and adaptor is derived from this experimentation and described in more detail in this thesis.<br/>
Inlet Guide Vane 을 통하는 기체유동에 관한 실험적 연구
이종훈(J.H. Lee),김창기(C.K. Kim),정해영(H.Y. Jeong),김희동(H.D. Kim) 대한기계학회 2011 대한기계학회 춘추학술대회 Vol.2011 No.4
In order to control the discharge flow rate, air compressors with large capacity have an inlet guide vane (IGV) in their inlet ducts. The flow downstream of this IGV is usually subject to strong unsteady vertical motions that can significantly influence the overall performance of the air compressor. Moreover, these complicated flows can result in apparent pressure loss in the volumetric flow entering the air compressors. Surprisingly, very few works have been made to investigate the effects of IGV on the compressor performance. The present study concerns with experimental works to measure the flow downstream of IGV which is installed onto the test section in a subsonic wind tunnel. Opening angle of the IGV is varied at several different flow velocities. Pitot probe is employed to measure the flow velocity and total pressures upstream and downstream of the IGV. The results obtained show that the pressure loss is strongly dependent on the opening angle of IGV.