Thermal Instability of Mixed Convection Flow Over a Horizontal Flat Plate

Abstract

The thermal instability of laminar, mixed-convection flow over an isothermal, horizontal flat plate is investigated analytically by the linear stability theory. In the analysis, the main flow and thermal fields are treated as non-parallel and the disturbances are assumed to have the form of a stationary longitudinal vortex roll that is periodic in the spanwise direction. Numerical results for the critical Grashof and Reynolds numbers that predict the first occurrence of the vortex rolls are obtained for gases having a Prandtl number of 0. 7. The results are compared with available experimental data also with analytical results from the wave mode of instability.

Department(s)

Mechanical and Aerospace Engineering

Keywords and Phrases

Heat Transfer -- Plates; Thermal Effects

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 1980 American Society of Mechanical Engineers (ASME), All rights reserved.

Publication Date

01 Jan 1980

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