... and small size is believed to have large loss and it needs to be further investigated and improved. In this paper, a centrifugal compressor combined with an air bearing is specially developed, with rotational speed as 120k RPM and pressure ratio as 3.5. The compressor impeller, diffuser and volute...

...The Unsteady Behavior of Diffuser Stall in a Centrifugal Compressor with Vaneless Diffuser Hiroshi Miida1, Kenta Tajima1, Nobumichi Fujisawa1, Yutaka Ohta1 1Waseda University, Tokyo, Japan ABSTRACT The unsteady diffuser stall behavior in a centrifugal compressor with a vaneless diffuser...

..., especially under low flow rate condition. Total performances and three-dimensional flow fields of centrifugal compressors have been analyzed by 3D-RANS simulations to certify effectiveness of the present design method. The 3D-RANS simulations and the flow visualization have been applied to a conventional...

...REDESIGN AND PERFORMANCE ANALYSIS OF MEDIUM FLOW COEFFICIENT CENTRIFUGAL COMPRESSOR Khaled Yousef1 Mechanical Engineering Department, Menoufia University, Shibin El Kom, Egypt Abraham Engeda2 Turbomachinery Lab, Michigan State University, East Lansing, MI, USA Ahmed Hegazy3 Mechanical Engineering...

... Abstract Secondary flows in transonic centrifugal compressor impellers affect their aerodynamic performance. In open-type impellers, low energy fluids can accumulate on the suction surfaces near the trailing edge tip side since the secondary flows and tip leakage flows interfere each other...

... Experimental Study on Aero-acoustic Characteristics of a Centrifugal Compressor and an Optimal Design for Noise Reduction Kyoung Ku, Ha Department of Mechanical and Aerospace Engineering, Seoul National University Seoul, Korea haorie78@snu.ac.kr Tae Bin, Jeong Department of Mechanical...

... This study will be described details on influence of movable diffuser such as local reverse flow patterns and pressure fluctuation in a vaneless diffuser during unstable operation of a centrifugal compressor. The experimental study is carried out in centrifugal compressor immersed into a water...

.... In the combination including a centrifugal compressor, the bend inlet due to spatial limitation has been shown in a various applications such as industrial chiller. The performance of centrifugal compressors can be degraded by inlet flow distortion due to a 90 degree curved pipe. The bend have some curvature radius...

... 30 07 2010 The operating efficiency of a centrifugal compressor installed in air-separation plant was lower than the design parameter. In order to analyze the cause, a flow simulation on the whole centrifugal compressor was carried out on a parallel computational platform...

... 10 07 2009 The present paper deals with the effect of the surface roughness on the performance of centrifugal compressors and the applicability of the Computational Fluid Dynamics (CFD) for the purpose of the quantitatively accurate prediction of the performance deterioration due...

... oscillatory pressure signals coming from the diffuser and the inlet of the compressor, which estimates the reverse flow velocity. centrifugal compressor deep surge rotating stall continuous wavelet transform wavelet cross-correlation Proceedings of ASME FEDSM'02: 2002 ASME Fluids Engineering...

... 14 10 2008 Effect of tip clearance on flow field of a low speed centrifugal compressor is presented. Computational study of centrifugal compressor is carried out using structured multi block grid with fine grid in the tip clearance region. Results are obtained with finite volume method...

... diffuser rotating stall centrifugal compressor rotating compres stall. Ro characte may rota phenome performa efficienc effort ha operatin rotating (2002) i flow cha Ferrara rotating shown in at stall i Proceedings of FEDSM2006 2006 ASME Joint U.S. - European Fluids Engineering Summer Meeting...