Title

Prediction of Turbulent Mixed Convection Along a Vertical Plate

Editor(s)

Tien Chang L. and Carey Van P. and Ferrell James K.

Abstract

Turbulent mixed convection adjacent to an isothermal vertical flat surface is analyzed for the buoyancy assisting flow situation. Results are presented for air (Pr = 0.7) flowing at various velocities and for a range of plate-free stream temperature differences. Closure of the governing, time averaged, turbulent equations for the mean flow quantities is attained by using a modified K- epsilon model which accounts for the influence of buoyancy induced forces on the turbulent quantities. The set of governing equations is solved by an implicit marching scheme similar to the one used by Patankar and Spalding. The results demonstrate clearly that the presense of small free stream velocities has the effect of delaying the transition from laminar to turbulent flow, thus creating a region where the predicted mixed convection heat flux is smaller than the equivalent turbulent natural convection. The numerical results are in qualitative agreement with available experimental measurements.

Meeting Name

International Heat Transfer Conference (1986, San Francisco, CA)

Department(s)

Mechanical and Aerospace Engineering

Document Type

Article - Conference proceedings

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 1986 Hemisphere Publishing Corp, All rights reserved.

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