A review of flow control techniques and optimisation in S-shaped ducts

Wojewodka, M. M., White, C. , Shahpar, S. and Kontis, K. (2018) A review of flow control techniques and optimisation in S-shaped ducts. International Journal of Heat and Fluid Flow, 74, pp. 223-235. (doi:10.1016/j.ijheatfluidflow.2018.06.016)

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Abstract

This paper is a review of significant studies in the complex flow physics in diffusive, s-shaped ducts, focusing on flow control methods employed to counteract the onset of separation, swirl formation, and non-uniformity of pressure at the duct exit plane. Passive, active, and hybrid flow control, along with optimisation techniques used to control the dominant flow features are discussed. According to the literature, tapered fin vortex generators and submerged vortex generators improve pressure loss and distortion by double digit percentages, and three-dimensional synthetic jets and pulsed micro-jets show greatest promise amongst active flow control devices. Plasma flow control methods have only sparsely been used in s-ducts with one study performing experiments with alternating-current dielectric-barrier-discharge plasma actuators. The importance of flow unsteadiness has been identified in the literature, with peak values as high as one order of magnitude different from the time-averaged properties. Despite this, very few flow control studies have used time-dependent solution methods to quantify the effect of flow control methods on the unsteadiness of the flow.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:White, Dr Craig and Kontis, Professor Konstantinos and Wojewodka, Michael
Authors: Wojewodka, M. M., White, C., Shahpar, S., and Kontis, K.
College/School:College of Science and Engineering > School of Engineering > Aerospace Sciences
Journal Name:International Journal of Heat and Fluid Flow
Publisher:Elsevier
ISSN:0142-727X
ISSN (Online):1879-2278
Published Online:24 October 2018
Copyright Holders:Copyright © 2018 Elsevier Inc.
First Published:First published in International Journal of Heat and Fluid Flow 74: 223-235
Publisher Policy:Reproduced in accordance with the publisher copyright policy

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