Flags as vortex generators for heat transfer enhancement: Gaps and challenges

Issue Date

9-2017

Abstract

The use of flexible plates or “flags” as vortex generators inside a channel was successfully demonstrated as an alternative heat transfer enhancement technique. This paper aims to present a brief review of flag vortex generators for thermal enhancement. Although flag dynamics is widely reported, the review reveals that this heat transfer technique is not widely explored, specifically on the heat transfer performance of flags. Extensive and intensive experimental results are lacking to validate numerical and theoretical predictions. This paper further provides a non-exhaustive list of existing gaps, challenges, and potential research areas in using flags as vortex generators for thermal enhancement, which aims to guide future research directions in this thermal-fluid-structure problem. There is a need to conduct further investigations on this technique to fully establish its thermal characteristics.

Source or Periodical Title

Renewable and Sustainable Energy Reviews

ISSN

1364-0321

Volume

76

Page

950-962

Document Type

Article

Physical Description

illustrations, tables, graphs

Language

English

Subject

Flag flutter, Flags, Fluid-structure interaction, Heat transfer enhancement, Vortex generators

Identifier

https://doi.org/10.1016/j.rser.2017.03.115Get

Digital Copy

yes

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