Turbulent Natural and Mixed Convection Along a Vertical Plate

Abstract

Measurements of turbulent boundary-layer air flow in natural and mixed convection adjacent to an isothermal vertical flat plate are reported. Laser-Doppler velocimeter and cold wire anemometer were used, respectively, to measure simultaneously the mean turbulent velocity and temperature distributions and their turbulent fluctuations. The velocity and temperature distributions were measured for a temperature difference, ΔT, of 30°C between the heated wall and the free stream air at a fixed location x = 3 m (with a corresponding Grashof number Grx = 8.55x1010), and for a range of free stream velocities 0 m/s ≤. u∞ ≤. 0.41 m/s. The effect of small free stream velocity on the turbulent natural convection is examined. These results reveal that the introduction of small free stream velocity on turbulent natural convection flow suppresses turbulence and decreases the heat transfer rate from the heated wall.

Department(s)

Mechanical and Aerospace Engineering

International Standard Serial Number (ISSN)

0272-5673

Document Type

Article - Conference proceedings

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2024 The Authors, All rights reserved.

Publication Date

01 Dec 1997

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