TECHNICAL PAPERS: Gas Turbines: Heat Transfer and Turbomachinery

Discharge Coefficients of Rotating Short Orifices With Radiused and Chamfered Inlets

[+] Author and Article Information
M. Dittmann, K. Dullenkopf, S. Wittig

Lehrstuhl und Institut für Thermische Strömungsmaschinen, University of Karlsruhe, 76128 Karlsruhe, Germany

J. Eng. Gas Turbines Power 126(4), 803-808 (Nov 24, 2004) (6 pages) doi:10.1115/1.1771685 History: Received October 01, 2002; Revised March 01, 2003; Online November 24, 2004
Copyright © 2004 by ASME
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Flow through stationary orifices, Nakayama 15
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Effect of orifice l/d and r/d for stationary configurations
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Flow through a rotating short orifice
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Comparison of experimental results and predicted values for radiused inlets
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Effect of orifice l/d on cD for radiused inlets
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Discharge coefficient defined in the absolute frame of reference, comparison of different correlations and experiments
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Discharge coefficients defined in the absolute and relative frame of reference
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Effect of orifice r/d and c/d on cD for l/d=0.4
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Effect of orifice r/d and c/d on cD for l/d=1.25
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Effect of inlet geometry for l/d=0.4



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