Title

Convective heat transfer over a flat plate in the wake of a turbulence generator

Document Type

Article

Publication Date

1-1-2017

Publication Title

Heat Transfer Research

Volume

48

Issue

7

First Page

585

Keywords

Cooling, Flat plate, Photovoltaic, Turbulence

Last Page

606

Abstract

An experimental investigation was carried out to study the heat transfer and turbulent flow over a flat plate in a wind tunnel. The turbulence was generated by a turbulence generator with a finite height mounted perpendicular to and on the leading edge of the flat plate. Instantaneous velocity measurements were performed with a 1D hot-wire anemometer to investigate the behavior of the flow a short distance downstream of the perforated plate. Temperature distribution and heat flux along the centerline of the plate with and without the perforated plate at the leading edge were measured. The results showed that significant wind blockage limited the turbulence generator (TG) to be effective in lowering the flat plate temperature to within a short distance downstream. Detailed flow measurements revealed that the orifice perforated plate that generated flow turbulence is superior in augmenting the Nusselt number. To realize its full potential, however, the drastic blockage caused by the current turbulence generator design needs to be mitigated.

DOI

10.1615/HeatTransRes.2016011984

ISSN

10642285

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