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research-article

Heat Transfer of Springs in Oblique Crossflows

[+] Author and Article Information
Daniel B. Biggs

Department of Aerospace Engineering, University of Michigan, Ann Arbor, MI 48109
dbbiggs@umich.edu

Christopher B. Churchill

HRL Laboratories, Mailbu, CA
chris.churchill@gmail.com

John Shaw

Department of Aerospace Engineering, University of Michigan, Ann Arbor, MI 48109
jashaw@umich.edu

1Corresponding author.

ASME doi:10.1115/1.4038338 History: Received January 04, 2017; Revised August 29, 2017

Abstract

An experimental program is presented of heated tension springs in an external cross-flow over a range of laminar Reynolds numbers, spring stretch ratios, and angles of attack. Extensive measurements of the forced-convection heat transfer of helical wire within a wind tunnel reveal an interesting non-monotonic dependence on angle of attack. Computational fluid dynamics (CFD) simulations, showing good agreement with the experimental data, are used to explore the behavior and gain a better understanding of the observed trends. A dimensionless correlation is developed that well-captures the experimental and CFD data and can be used as an efficient computational tool in broader applications.

Copyright (c) 2017 by ASME
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