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Experimental investigations on tandem compressor cascade performance at low speeds

DSpace at IIT Bombay

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Title Experimental investigations on tandem compressor cascade performance at low speeds
 
Creator SAHA, UK
ROY, B
 
Subject controlled diffusion airfoils
axial-flow compressors
2-dimensional cascade
separated flow
aspect ratio
axial compressor
boundary layer
cascade
controlled diffusion
airfoil
diffusion factor
loss coefficient
tandem blade
 
Description Minimizing the number of axial flow compressor stages for a specific work output, and thereby lowering the engine size and weight, has always been the designer's goal. Recently, with the emergence of low aspect ratio blades: there has been a renewed interest in tandem blading for maximizing the blade loading further besides improving its off-design performance characteristics. This paper presents aerodynamic performance evaluations of three assorted cascades of single (CDA 43), tandem (CDA 21-21), and a newly developed tandem (CDA 32-21) blading. Fundamental investigation has been attempted in a low speed cascade wind tunnel to find the high deflection capability of tandem cascades. Although limited performance of tandem CDA 21-21 has been affected by certain grey areas covering both geometric and aerodynamic shortfall, tandem CDA 32-21 derived from CDA 43 and CDA 21-21 has shown high flow deflection characteristics and hence high loading over a wide range of angle of attack. (C) Elsevier Science Inc., 1997.
 
Publisher ELSEVIER SCIENCE INC
 
Date 2011-07-27T08:50:01Z
2011-12-26T12:56:29Z
2011-12-27T05:45:18Z
2011-07-27T08:50:01Z
2011-12-26T12:56:29Z
2011-12-27T05:45:18Z
1997
 
Type Article
 
Identifier EXPERIMENTAL THERMAL AND FLUID SCIENCE, 14(3), 263-276
0894-1777
http://dx.doi.org/10.1016/S0894-1777(96)00125-2
http://dspace.library.iitb.ac.in/xmlui/handle/10054/7174
http://hdl.handle.net/10054/7174
 
Language en