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TECHNICAL PAPERS

Improving Startup Behavior of Fluid Couplings Through Modification of Runner Geometry: Part I—Fluid Flow Analysis and Proposed Improvement

[+] 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), 683-688 (Jul 10, 2000) (6 pages) doi:10.1115/1.1319501 History: Received December 04, 1998; Revised July 10, 2000
Copyright © 2000 by ASME
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References

Formanski, T., Huitenga, H., Mitra, N. K., and Fiebig, M., 1995, “Numerical investigation of 3D flow and torque transmission in fluid couplings under unsteady working conditions,” International Gas Turbine and Aeroengine Congress and Exposition, 95-GT-81.
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., Formanski, T., Mitra, N. K., and Fiebig, M., 1995, “3D flow structures and operating characteristic of an industrial fluid coupling,” International Gas Turbine and Aeroengine Congress and Exposition, 95-GT-52.
Bai, L., Kost, A., Mitra, N. K., and Fiebig, M., 1994, “Numerical investigation of unsteady incompressible 3D turbulent flow and torque transmission in fluid couplings,” International Gas Turbine and Aeroengine Congress and Exposition, 94-GT-69.
Perić, M., 1985, “A finite volume method for the prediction of three-dimensional fluid flow in complex ducts,” Ph.D. thesis, University of London.
Schönung, B. E., 1990, Numerische Strömungsmechanik, Springer, Berlin.
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van Doormal,  J. P., and Raithby,  G. D., 1984, “Enhancement of the SIMPLE method for predicting incompressible fluid flows,” Numer. Heat Transfer, 7, pp. 147–163.
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Kost, A., Mitra, N. K., and Fiebig, M., 1994, “Computation of unsteady 3D flow and torque transmission in hydrodynamic couplings,” International Gas Turbine and Aeroengine Congress and Exposition, 94-GT-70.
Rai,  M. M., 1987, “Navier-Stokes simulations of rotor/stator interaction using patched and overlaid grids,” J. Propulsion,3, pp. 387–396.
Kost,  A., Bai,  L., Mitra,  N. K., and Fiebig,  M., 1992, “Calculation procedure for unsteady incompressible 3D flows in arbitrarily shaped domains,” Notes Num. Fluid Mech.,35, pp. 269–278.
Stone,  H. L., 1968, “Iterative Solution of Implicit Approximations of Multidimensional Partial Differential Equations,” SIAM J. Num. Anal.,5, pp. 530–558.

Figures

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Elements of a hydrodynamic coupling and schematic flow path
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Operation characteristic for a standard coupling and a special start-up device
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Flow field averaged in time and circumferential direction in a meridional cross section
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Spatial distribution of flow components for two different points of operation
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Flow path along two different cylinder sections
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Simulated and experimental operation characteristic
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Variation of static pressure difference on the blades for two different points of operation

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