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Title: Numerical simulation of Rayleigh Bénard convection in an enclosure: Effect of vibrating side wall
Authors: Çetindağ, Semih
Aktaş, Murat Kadri
Keywords: Compressible flow
Oscillatory flow
Rayleigh-Bénard convection
Issue Date: 2014
Publisher: Newswood Limited
Source: World Congress on Engineering, WCE 2014, 2 July 2014 through 4 July 2014, London, 107585
Abstract: Transient convective heat transfer in an air-filled shallow enclosure with a vibrating side wall is investigated numerically. Rayleigh Bénard convection and oscillatory flows has been the subject of many investigations by using both experimental and theoretical methods. To our best knowledge, the influence of vibrating side wall on classical Rayleigh-Bénard convection has not been studied. In the present study, periodic vibration of the enclosure side wall is employed as a driving force of fluid motion. The sidewalls of enclosure are kept in adiabatic conditions while the bottom wall is isothermally heated and the top wall is kept at initial temperature. A control-volume method based, explicit time-marching Flux-Corrected Transport Algorithm is implemented to solve the fully compressible form of the Navier-Stokes and energy equations. The numerical results of a test case simulation with stationary sidewalls are compared with the existing literature for code validation. The oscillatory fluid motion significantly changes the transient behavior of the thermal transport in the enclosure compared to the pure Rayleigh-Bénard convection.
ISBN: 9789881925350
ISSN: 2078-0958
Appears in Collections:Makine Mühendisliği Bölümü / Department of Mechanical Engineering
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection

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