Improving Startup Behavior of Fluid Couplings Through Modification of Runner Geometry: Part II—Modification of Runner Geometry and Its Effects on the Operation Characteristics

[+] Author and Article Information
H. Huitenga

Siemens AG/KWU, 45470 Mülheim, Germany

N. K. Mitra

Institut für Thermo- und Fluiddynamik, Ruhr-Universität Bochum, 44780 Bochum, Germany

J. Fluids Eng 122(4), 689-693 (Jul 10, 2000) (5 pages) doi:10.1115/1.1319502 History: Received December 04, 1998; Revised July 10, 2000
Copyright © 2000 by ASME
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Bai,  L., Fiebig,  M., and Mitra,  N. K., 1997, “Numerical Analysis of turbulent flow in fluid couplings,” ASME J. Fluids Eng., 119, pp. 569–576.
Huitenga, H., 1997, Verbesserung des Anlaufverhaltens hydrodynamischer Kupplungen durch Modifikation der Kreislaufgeometrie, VDI, Düsseldorf.
Fister, M., 1993, Experimentelle Untersuchung an hydrodynamischen Kupplungen mit verstellbaren Kanälen, Ph.D thesis, Bochum.


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Static pressure distribution on modified and standard coupling
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Influence of relative motion on axial flow field
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Time averaged velocity vectors and streamlines
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Comparison of different pump and turbine modifications
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Reduced pump wheel width for Ek=4.7⋅10−6,Z=45, d/D=0.40
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Reduced number of blades for Ek=2.5⋅10−6, B/D=0.17, d/D=0.49
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Optimization of start-up behavior and reduction of mass



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