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소형 터보압축기의 디퓨저 형상변화에 따른 유동특성 고찰
김홍식,김윤제,김철수,Kim, H.-S.,Kim, Youn J.,Kim, C.-S. 한국유체기계학회 2001 한국유체기계학회 논문집 Vol.4 No.3
The effects of diffuser shapes on the flowfields of a small-size turbo-compressor have been investigated numerically and experimentally. The optimal design of elements shapes is important to develop the high efficiency turbo-compressor. Typical range of rotating speed for a small-size turbo-compressor is 40,000-70,000rpm. Numerical analyses were conducted to the rectangular and conical shapes of diffuser Three-dimensional, steady and viscous governing equations were solved by SIMPLE algorithm. To confirm the numerical results, the experimental measurements for the static pressure and temperature at the inlet and outlet boundaries were performed. Comparisons of these results were done, and the reasonable agreements were acquired.
김홍식(H.S.Kim),박재인(J.I.Park),주원구(W.K.Joo),조강래(K.R.Cho) 한국자동차공학회 1997 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1997 No.6_1
The automotive torque converter consists of pump, turbine and stator. Its detailed design procedure is not yet known and remains know-how of the torque converter manufacturers. One-dimensional analysis is a strong solver in elementary design, but weak in presumption of performances and cannot validate 2 or 3-dimensional design parameters. In this paper, design process and parameters of 3-dimensional blade profile are discussed. And 3-dimensional turbulent flow analysis was performed for the designed torque converter. It was shown that the design of torque converter would be performed effectively by using the design method along with the flow analysis method described here.<br/>
베인 디퓨져 목 형상비 변화에 따른 소형 터보압축기 성능특성 고찰
김홍식(H.-S. Kim),김윤제(Youn J. Kim) 한국유체기계학회 2001 유체기계 연구개발 발표회 논문집 Vol.- No.-
The effects of various vaned diffuser configurations, such as throat area ratios and rectangular and conical cross-section shapes. to the performance of a small-size turbo-compressor are studied. Numerical analyses were carried out for the region of diffuser and casing only. The pressure recovery coefficient was calculated to estimate the performance of the diffuser, and then compared with the measured data. Results show that the shapes and the throat area ratios of the diffuser strongly influence on the performance of a turbo-compressor.
소형 터보압축기의 디퓨져 형상변화에 따른 유동특성 고찰
김홍식(H.-S. Kim),차관(K. Cha),김윤제(Youn J. Kim) 한국유체기계학회 2000 유체기계 연구개발 발표회 논문집 Vol.- No.-
The effects of diffuser shapes on the flowfields of a small-size turbo-compressor have been investigated by numerically and experimentally. It is important to optimal design of each elements for developing the small-size turbo-compressor. Typical range of rotating speed of a small-size turbo-compressor is 40,000-70,000rpm. Numerical analyses are conducted to the rectangular and conical shapes of diffusers. Three-dimensional, steady, viscous governing equations are solved by SIMPLE algorithm. To prove the numerical results, experimental studies for the measurements of static pressure and temperature at the inlet and outlet boundaries are performed. Comparisons of these results are executed, and reasonable agreements are acquired.