Thermal‐fluid transport phenomena in strongly heated channel flows

Shuichi Torii (Department of Mechanical Engineering, Kagoshima University, Kagoshima, Japan, and)
Wen‐Jei Yang (Mechanical Engineering and Applied Mechanics, University of Michigan, Ann Arbor, Michigan, USA)

International Journal of Numerical Methods for Heat & Fluid Flow

ISSN: 0961-5539

Publication date: 1 December 2000


A theoretical study is performed to investigate transport phenomena in channel flows under uniform heating from either both side walls or a single side. The anisotropic t− εt heat‐transfer model is employed to determine thermal eddy diffusivity. The governing boundary‐layer equations are discretized by means of a control volume finite‐difference technique and numerically solved using a marching procedure. It is found that under strong heating from both walls, laminarization occurs as in the circular tube flow case; during the laminarization process, both the velocity and temperature gradients in the vicinity of the heated walls decrease along the flow, resulting in a substantial attenuation in both the turbulent kinetic energy and the temperature variance over the entire channel cross section; both decrease causes a deterioration in heat transfer performance; and in contrast, laminarization is suppressed in the presence of one‐side‐heating, because turbulent kinetic energy is produced in the vicinity of the other insulated wall.



Torii, S. and Yang, W. (2000), "Thermal‐fluid transport phenomena in strongly heated channel flows", International Journal of Numerical Methods for Heat & Fluid Flow, Vol. 10 No. 8, pp. 802-823.

Download as .RIS




Copyright © 2000, MCB UP Limited

Please note you might not have access to this content

You may be able to access this content by login via Shibboleth, Open Athens or with your Emerald account.
If you would like to contact us about accessing this content, click the button and fill out the form.
To rent this content from Deepdyve, please click the button.