Computational Fluid Dynamics Simulation of Hydraulic Torque Converter for Performance Characteristics Prediction

Authors(2) :-S. Jeyakumar, M. Sasikumar

In this paper the Computational Fluid Dynamics (CFD) simulation work being done on single stage, three element two phase torque converter using a commercially available software STAR-CCM+. A Computational Fluid Dynamics (CFD) simulation is used to determine the overall steady state torque converter performance characteristics in-terms of speed ratio, torque ratio, K-Factor and efficiency. The internal flow field distribution rules were analysed in inlet and outlet of the torque converter elements. The CFD STAR CCM+ software solves the incompressible Reynolds-Averaged-Navier-Stokes (RANS) equations on the entire flow domain using the realisable k-Ԑ turbulence model. To verify the accuracy of CFD simulation, the results were validated experimentally by using dynamometer load testing. The torque converter performance characteristics predicted by CFD simulation, is exactly coincidence with experimental results. Based on the validation study, it is proved that CFD can be used as a design and analysis tool to make decisions about design direction. This paper demonstrates the confidence level in hydraulic torque converter fluid flow simulations using CFD STAR CCM+ software and describes how it can be used to assist torque converter design today.

Authors and Affiliations

S. Jeyakumar
Research and Development Division, BEML Ltd, KGF, Karnataka, India
M. Sasikumar
Research and Development Division, BEML Ltd, KGF, Karnataka, India

Computational Fluid Dynamics (CFD), Reynolds-Averaged-Navier-Stokes (RANS), Realisable k-Ԑ turbulence model

  1. V.J. Jandasek, "Design of Single-Stage, Three Element Torque Converter", Design Practice : Passenger Car Automatic Transmission, Third Edition, AE-17, SAE Transaction, vol.5, 1970, pp.201-226.
  2. Sehyun Shin, Kyung-Joon Kim and Dong-Jin Kim "The Effect of Reactor Blade Geometry on the Performance of an Automatic Torque Converter", SAE 2002-01-0885
  3. Haruo Sakamoto, Kiyoto Suyama and TokimoriSaka "Study on Torque Converter Circuit Profile" SAE 920765
  4. Joaquim Emanuel Santini and Hans Inge Weber "Mathematical Model to Predict the Performance Characteristics of the Torque Converters", SAE 921452E.
  5. Kiyoyuki Minato, Kenichi Sakamoto, Michitoshi and KatsuroFujitani : "A Performance Prediction of Hydrodynamic Torque Converter", SAE 900555
  6. Robert R. By and John E. Mahoney "Technology Needs for the Automotive Torque Converter-Part 1: Internal Flow, Blade Design and Performance", SAE 880482.
  7. E Joaquim E. Sanitini and Hans L.Weber" Theoretical Formulation For Power Losses In Torque Converters",          SAE 931702E.
  8. GE Anlin, TIAN Hua, WANG Jian "Amending redesign of torque converter based on three dimensional flow analysis". Journal of Jiangsu University (Natural Science Edition), pp. 206-208, March 2005.
  9. Jae Hyuk Jung, Seongwon Kang and NahmkeonHur "A numerical study of a torque converter with various methods for the accuracy improvement of performance prediction" Progress in Computational fluid Dynamics, Vol.11, Nos.3/4, 2011
  10. Seunghan Yang, Sekyun Shin and IncheolBae School of Mechanical Eng. Kyungpook National University, Taegu, Korea, Taekyung Lee, Korea Powertrain corp. Taegu, Korea, SAE Technical paper series, 1999-01-1046.
  11. E.W. Upton "Application of Hydrodynamic Drive Units to Passenger Car Automatic Transmissions" SAE, 1961 Summer Meeting, 359A.
  12. Yu Dong, Vamshi Korivi, Pradeep Attibele and Yiqing Yuan, DamlerChrysler Corp. "Torque Converter CFD Engineering Part 1: Torque Ratio and K Factor Improvement Through Stator Modifications, SAE 2002-01-0883

Publication Details

Published in : Volume 3 | Issue 6 | September-October 2017
Date of Publication : 2017-10-31
License:  This work is licensed under a Creative Commons Attribution 4.0 International License.
Page(s) : 402-408
Manuscript Number : IJSRSET173697
Publisher : Technoscience Academy

Print ISSN : 2395-1990, Online ISSN : 2394-4099

Cite This Article :

S. Jeyakumar, M. Sasikumar, " Computational Fluid Dynamics Simulation of Hydraulic Torque Converter for Performance Characteristics Prediction , International Journal of Scientific Research in Science, Engineering and Technology(IJSRSET), Print ISSN : 2395-1990, Online ISSN : 2394-4099, Volume 3, Issue 6, pp.402-408, September-October-2017.
Journal URL : http://ijsrset.com/IJSRSET173697

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