Numerical Investigation and Comparison on the Stall Improvement Mechanism of Centrifugal Compressor with Inducer Casing and Bleeding

2009 ◽  
Vol 45 (07) ◽  
pp. 138 ◽  
Author(s):  
Liangjun HU
Keyword(s):  
Numerical Investigation ◽  
Centrifugal Compressor

A Numerical Investigation on the Volute/Diffuser Interaction due to the Axial Distortion at Impeller Exit

2000 ◽  
Author(s):  
Fahua Gu ◽  
Abraham Engeda ◽  
Mike Cave ◽  
Jean-Luc Di Liberti
Keyword(s):  
Experimental Data ◽  
Numerical Simulation ◽  
Numerical Investigation ◽  
Steady Flow ◽  
Centrifugal Compressor ◽  
Vortex Structure ◽  
Flow Model ◽  
Single Stage ◽  
Mass Flows

Abstract A numerical simulation is performed on a single stage centrifugal compressor using the commercially available CFD software, CFX-TASCflow. The steady flow is obtained by circumferentially averaging the exit fluxes of the impeller. Three runs are made at design condition and off-design conditions. The predicted performance is in agreement with experimental data. The flow details inside the stationary components are investigated, resulting in a flow model describing the volute/diffuser interaction at design and off-design conditions. The recirculation and twin vortex structure are found to explain the volute loss increase at lower and higher mass flows, respectively.

Experimental and Numerical Investigation of Tip Clearance and Bleed Effects in a Centrifugal Compressor Stage With Pipe Diffuser

2012 ◽  
Vol 135 (1) ◽  
Author(s):  
Robert Kunte ◽  
Philipp Schwarz ◽  
Benjamin Wilkosz ◽  
Peter Jeschke ◽  
Caitlin Smythe
Keyword(s):  
Numerical Investigation ◽  
Centrifugal Compressor ◽  
Tip Clearance ◽  
Compressor Stage ◽  
Local Flow ◽  
Centrifugal Compressor Stage ◽  
Centrifugal Stage ◽  
Flow Phenomena ◽  
Fundamental Insight ◽  
The Impact

The subject of this paper is the experimental and numerical investigation of a state-of-the-art high pressure centrifugal compressor stage with pipe diffuser for a jet engine application. This study shows the impact of impeller tip clearance- and bleed-variation on the centrifugal stage. The purpose of this paper is threefold. In the first place, it investigates the effects on the stage performance. Secondly, it seeks to explain local flow-phenomena, especially in the diffuser. Finally, it shows that steady CFD simulations are capable of predicting these phenomena. Experimental data were gathered using conventional pitot and three-hole-probes as well as particle-image-velocimetry. Numerical simulations with the CFD solver TRACE were conducted to get fundamental insight into the flow. Thus, this study contributes greatly towards understanding the principle of the flow phenomena in the pipe diffuser of a centrifugal compressor.

Numerical Investigation of Ring Groove Effect in a Centrifugal Compressor

2011 ◽  
Vol 14 (2) ◽  
pp. 11-16
Author(s):  
Chi-Yong Park ◽  
Young-Seok Choi ◽  
Kyoung-Yong Lee ◽  
Joon-Yong Yoon
Keyword(s):  
Numerical Investigation ◽  
Centrifugal Compressor ◽  
Ring Groove

Numerical investigation & comparison of a tandem-bladed turbocharger centrifugal compressor stage with conventional design

2014 ◽  
Vol 23 (6) ◽  
pp. 523-534
Author(s):  
Syed Noman Danish ◽  
Shafiq Rehman Qureshi ◽  
Abdelrahman EL-Leathy ◽  
Salah Ud-Din Khan ◽  
Usama Umer ◽  
...  
Keyword(s):  
Numerical Investigation ◽  
Centrifugal Compressor ◽  
Compressor Stage ◽  
Centrifugal Compressor Stage ◽  
Conventional Design
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