Optimization of the angle of attack of delta-winglet vortex generators in a plate-fin-and-tube heat exchanger

Lenouedda A, Breuer M, Franz E, Botsch T, Delgado A (2010)

Publication Type: Journal article

Publication year: 2010

Journal

International Journal of Heat and Mass Transfer Elsevier

Publisher: Elsevier

Book Volume: 53

Pages Range: 5386-5399

Journal Issue: 23-24

URI: http://www.sciencedirect.com/science/article/pii/S0017931010003856#

DOI: 10.1016/j.ijheatmasstransfer.2010.07.017

Abstract

Delta-winglet vortex generators (VGs) are known to enhance the heat transfer between the energy-carrying fluid and the heat transfer surfaces in plate-fin-and-tube banks. In this study optimal angles of attack of the delta-winglets are investigated based on the Pareto optimal strategy. The optimization process combines a CFD analysis, genetic algorithms and the response surface methodology. The angle of attack of a pair a delta-winglet-type VGs mounted behind each tube is varied between β = -90° and +90°. Three circular tube rows with inline and staggered tube arrangements are investigated for Reynolds numbers from 200 to 1200 (based on the inlet height and inlet velocity). The flow structure and heat transfer behavior is analyzed in detail for certain cases and the staggered and the inline tube arrangements are compared. Finally, for each of these arrangements the optimal sets of angles of attack for different Reynolds numbers are presented. © 2010 Elsevier Ltd. All rights reserved.

Authors with CRIS profile

Michael Breuer Technische Fakultät Antonio Delgado Lehrstuhl für Strömungsmechanik (LSTM)

Involved external institutions

Technische Hochschule Nürnberg "Georg Simon Ohm" DE Germany (DE)

How to cite

APA:

Lenouedda, A., Breuer, M., Franz, E., Botsch, T., & Delgado, A. (2010). Optimization of the angle of attack of delta-winglet vortex generators in a plate-fin-and-tube heat exchanger. International Journal of Heat and Mass Transfer, 53(23-24), 5386-5399. https://doi.org/10.1016/j.ijheatmasstransfer.2010.07.017

MLA:

Lenouedda, Abdellah, et al. "Optimization of the angle of attack of delta-winglet vortex generators in a plate-fin-and-tube heat exchanger." International Journal of Heat and Mass Transfer 53.23-24 (2010): 5386-5399.

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