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RESEARCH PAPERS

A Modified Low-Reynolds-Number Turbulence Model Applicable to Recirculating Flow in Pipe Expansion

[+] Author and Article Information
K. C. Chang, W. D. Hsieh, C. S. Chen

Institute of Aeronautics and Astronautics, National Cheng-Kung University, Tainan, Taiwan

J. Fluids Eng 117(3), 417-423 (Sep 01, 1995) (7 pages) doi:10.1115/1.2817278 History: Received June 14, 1993; Revised April 17, 1995; Online December 04, 2007

Abstract

A modified low-Reynolds-number k-ε turbulence model is developed in this work. The performance of the proposed model is assessed through testing with fully developed pipe flows and recirculating flow in pipe expansion. Attention is specifically focused on the flow region around the reattachment point. It is shown that the proposed model is capable of correctly predicting the near-wall limiting flow behavior while avoiding occurrence of the singular difficulty near the reattachment point as applying to the recirculating flow in sudden-expansion pipe.

Copyright © 1995 by The American Society of Mechanical Engineers
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