Title

Systematic CFD parameter approach to improve torque converter simulation

Document Type

Article

Publication Date

4-8-2019

Department

Department of Mechanical Engineering-Engineering Mechanics

Abstract

A systematic parametrization approach was employed to simulate a torque converter operating over a wide range of speed ratios. Results of the simulation yielded torque converter impeller and turbine torques prediction errors below 11% when compared to manufacturer data. Further improvements in the computational fluids dynamic (CFD) model reduced such errors down to 3% for the impeller and 6% for the turbine torque predictions. Convergence was reached well under 300 iterations for the most optimal variable setting, but each speed ratio was let to run for 300 iterations. Solution time for the 300 iterations was 40 minutes per speed ratio. The systematic parametrization provides a very competitive procedure for torque converter simulation with reduced computational error and fast solution time.

Publisher's Statement

©2019 SAE International. All Rights Reserved. Publisher’s version of record: https://doi.org/10.4271/06-12-02-0008

Publication Title

SAE International

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