Torque and pressure CFD correlation of a torque converter
Document Type
Article
Publication Date
8-22-2019
Department
Department of Mechanical Engineering-Engineering Mechanics
Abstract
A torque converter was instrumented with 29 pressure transducers inside five cavities under study (impeller, turbine, stator, clutch cavity between the pressure plate and the turbine shell). A computer model was created to establish correlation with measured torque and pressure. Torque errors between test and simulation were within 5% and K-Factor and torque ratio errors within 2%. Turbulence intensity on the computer model was used to simulate test conditions representing transmission low and high line pressure settings. When turbulence intensity was set to 5%, pressure simulation root mean square errors were within 11%-15% for the high line pressure setting and up to 34% for low line pressure setting. When turbulence intensity was increased to 50% for the low line pressure settings, a 6% reduced root mean square error in the pressure simulations was seen. For all pressure settings, cavities closer to the converter inlet required a 5% turbulence intensity while the cavities inside or near the torus were better suited with 50% turbulence intensity levels.
Publication Title
SAE International Passenger Cars-Mechanical Systems
Recommended Citation
Rivera, E. D.,
Woodland, M.,
Robinette, D. L.,
&
Blough, J. R.
(2019).
Torque and pressure CFD correlation of a torque converter.
SAE International Passenger Cars-Mechanical Systems,
12(3), 157-168.
http://doi.org/10.4271/06-12-03-0012
Retrieved from: https://digitalcommons.mtu.edu/michigantech-p/1235