http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
임펠러 직경비 및 리어가이더 형상변화가 횡류홴 성능에 미치는 실험적 연구
김형섭(H.-S. Kim),김동원(D.-W. Kim),윤태석(T.-S. Yoon),박성관(S.-K. Park),김윤제(Youn J. Kim) 한국유체기계학회 2003 유체기계 연구개발 발표회 논문집 Vol.- No.-
A cross-flow fan relatively produces higher dynamic pressure at low speed because a working fluid passes through an impeller blade twice and blades have a forward curved shape. The performance of a cross-flow fan is influenced 25% by the impeller, 60% by the rearguider and the stabilizer, and 15% by the heat exchanger. At the low flow rate, there exist a rapid pressure head reduction, a noise increase and an unsteady flow against a stabilizer and a rearguider. The purpose of this study is to investigate the reciprocal relation among each parameter. Experiments are conducted to study the effects of a rearguider and a diameter ratio of impeller on the performance analysis of a cross-flow fan. Comparing with the rearguider of radial type, the Archimedes type shows excellent results for various diameter ratios.
김세진(S.-J. Kim),김동원(D.-W. Kim),김윤제(Youn J. Kim) 한국유체기계학회 1999 유체기계 연구개발 발표회 논문집 Vol.- No.-
The flow characteristics of double suction pump are investigated by numerically. Calculations are performed by using SIMPLE algorithm at the design and off-design points. Symmetric nature of flow fields in blade channels is discovered at design point, but asymmetirc effects are discovered at the off-design point. Numerical results show that the formation of secondary flow in volute of double suction pump shows different trends when compared with the case of single suction pump. Also results show that double vortices are formed in the volute cross section.