Experimental and Numerical Investigation of Stator Exit Flow Field of an Automotive Torque Converter

[+] Author and Article Information
B. V. Marathe, B. Lakshminarayana, Y. Dong

Department of Aerospace Engineering, Pennsylvania State University, University Park, PA 16802

J. Turbomach 118(4), 835-843 (Oct 01, 1996) (9 pages) doi:10.1115/1.2840941 History: Received February 04, 1994; Online January 29, 2008


The objective of this investigation is to understand the nature of the complex flow field inside each element of the torque converter through a systematic experimental and numerical investigation of the flow field. A miniature five-hole probe was used to acquire the data at the exit of the stator at several operating conditions. The flow field is found to be highly three dimensional with substantial flow deviations, and secondary flow at the exit of the stator. The secondary flow structure, caused by the upstream radial variation of the through flow, induces flow overturning near the core. Flow separation near the shell causes flow underturning in this region. The rate of decay of stator wake is found to be slower than that observed in the wakes of axial flow turbine nozzles. The flow predictions by a Navier–Stokes code are in good agreement with the pressure and the flow field measured at the exit of the stator at the design and the off-design conditions.

Copyright © 1996 by The American Society of Mechanical Engineers
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