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research-article

Numerical Simulation of Flow and Heat Transfer in Rotating Cooling Passage with Turning Vane in Hub Region

[+] Author and Article Information
Hung-Chieh Chu

Texas A&M University, Department of Mechanical Engineering, 3123 TAMU, College Station, TX 77843-3123
chu575@tamu.edu

Hamn-Ching Chen

Texas A&M University, Zachry Department of Civil Engineering, 3136 TAMU, College Station, TX 77843-3136
hcchen@civil.tamu.edu

Je-Chin Han

Texas A&M University, Department of Mechanical Engineering, 3123 TAMU, College Station, TX 77843-3123
jc-han@tamu.edu

1Corresponding author.

ASME doi:10.1115/1.4037498 History: Received December 21, 2016; Revised June 06, 2017

Abstract

Numerical simulation of three-dimensional turbulent flow and heat transfer was performed in a multi-pass rectangular (AR=2:1) rotating cooling channel with and without turning vane in the hub region under various flow conditions, with two different Reynolds numbers of 10,000 and 25,000, two different channel orientations of 45-deg and 90-deg., and the rotation number varies from 0 to 0.2. The present study shows that the addition of the turning vane in the hub turn region does not cause much impact to the flow before the hub. However, it significantly alters the flow reattachment and vortex distribution in the hub turn region and after the hub turn portion. The local heat transfer is deeply influenced by this complex flow field and this turning vane effect lasts from the hub turn region to the portion after it.

Copyright (c) 2017 by ASME
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