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Numerical Investigation of the Pump Flow in an Automotive Torque Converter
Technical Paper
1999-01-1056
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
This paper addresses the fundamental flow feature question of how to design and optimize torque converter blades with numerical analysis. The present numerical analysis describes the details of the incompressible, three-dimensional, viscous and turbulent flow field within the pump of an automotive torque converter. An advanced Navier-Stoked flow code was modified for computations of the torque converter flow with the mixing plane and the k-ε turbulence models. The pump blade tip in our analysis is bent backward to meet the performance characteristics. The present numerical results assess the development of jet/wake flow and secondary flow along the flow direction. It is of note that the direction of the secondary flow at pump exit has not been changed. Undesirable pressure distributions near the exit were seen, mainly as a result of tip bending at the pump exit. The firm understanding of the flow details and performance characteristics provided by CFD analyses makes it possible to design highly efficient torque converters with optimized blade geometries.
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Citation
Shin, S., Chang, H., and Athavale, M., "Numerical Investigation of the Pump Flow in an Automotive Torque Converter," SAE Technical Paper 1999-01-1056, 1999, https://doi.org/10.4271/1999-01-1056.Also In
References
- Fujitani, K. R. R. Himeno Takagi, M. 1988 “Computational Study on Flow Through a Torque Converter,” SAE paper 881746
- Abe, K. Kondoh, T. 1991 “Three-Dimensional Simulation of the Flow in a Torque Converter,” SAE paper 910900
- Schulz, H. Greim, R. Volgmann, W. 1996 “Calculation of Three-dimensional Viscous Flow in Hydrodynamic Torque Converters,” ASME Journal Turbomachinery 118 3 578
- By, R. 1993 “An Investigation of Three-Dimensional Flow Fields in the Automobile Torque Converter,” Dept. of Aerospace Engineering, Pennsylvania State University
- By, R. Lakshminarayana, B. 1995 “Measurement and Analysis of Static pressure Field in a Torque Converter Pump,” ASME Journal of Fluids Engineering 117 109 115
- By, R. Kunz, R. Lakshminarayana, B. 1995 “Navier-Stokes Analysis of the Pump Flow Field of an Automotive Torque Converter,” ASME Journal of Fluids Engineering 117 1 116 122
- By, R. R. Mahoney, J.E 1988 “Technology Needs for the Automotive Torque Converter,” Part I: Internal Flow, Blade Design and Performance SAE paper 880482
- Tsujita, H. Mizuki, S. Ejiri, E. 1996 “Analysis of Flow Within Pump Impeller of Torque Converter,” ASME paper 96-GT-444 Birmingham, England June 1996
- Brun, K. Flack, R. D. Gruver, J. K. 1996 “Laser Velocimetry Measurement in the Pump of an Automotive Torque Converter: Part II Unsteady Measurement,” Journal Turbomachinery 118 3 570
- Brun, K. Flack, R. D. Ainley, S. B. 1994 “Secondary Flow Measurement in a Mixed Flow Pump Using Laser Velocimetry,” Seventh International Symposium on Applications of Laser Techniques to Fluid Mechanics Lisbon, Portugal
- CFD-ACE, version 2.1 manual CFDRC
- Denton, J. D. 1990 “The Calculation of Three-dimensional Viscous Flow through Multistage Turbomachines,” ASME paper 90-GT-19
- Eckart, D. 1998 “Flow Field Analysis of Radial and Back-swept Centrifugal Impellers,” Performance Prediction of Compressors & Pumps ASME
- Dean, R. C., Jr Senoo, Y. 1960 “Rotating Wakes in Vaneless Diffusers,” J. Basic Engineering September 563 570
- Eckardt, D 1976 “Detailed Flow Investigations within a High Speed Centrifugal Compressor Impeller,” J. Fluid Engineering 98 390 402
- Johnson, M. W. Moore, J. 1980 “The Development of Wake Flow in a Centrifugal Impeller,” J. Engineering for Power 102 382 390
- Gruber, J. K. Flack, R. D. Brun, K. 1996 “Laser Velocimeter Measurements in the Pump of a Torque Converter, Part I: Average Measurements,” J. turbomachinery 118 3 562