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Title: The effects of acoustic streaming on thermal convection in an enclosure with differentially heated horizontal walls
Authors: Aktaş, Murat Kadri
Ozgümüş, Türküler
Keywords: Acoustic streaming
Temperature gradient
Heat transfer
Issue Date: 2010
Publisher: Pergamon-Elsevier Science Ltd
Abstract: The effects of classical and irregular streaming motion on convective heat transfer in air-filled shallow enclosures carrying a standing sound wave are investigated. The fluid motion is driven by the periodic vibration of the enclosure left wall. The vertical walls of the enclosure are adiabatic while the horizontal walls are heated differentially. The fully compressible form of the Navier-Stokes equations are considered to compute the oscillatory and mean flow fields. A control-volume method based, explicit time-marching Flux-Corrected Transport (FCT) Algorithm is used to simulate the transport phenomena in the enclosure. The simulation results of a test case for an unheated enclosure are compared with the existing literature for code validation. Transverse temperature gradient strongly affects the acoustic streaming structures and velocities. The streaming motion significantly enhances overall heat transfer from the bottom wall compared to pure conduction. Enhancement is more pronounced in the presence of irregular streaming. (C) 2010 Elsevier Ltd. All rights reserved.
ISSN: 0017-9310
Appears in Collections:Makine Mühendisliği Bölümü / Department of Mechanical Engineering
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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