Convective heat transfer enhancement via electrically driven vortices in an MDH duct flow

Ahmad Hussein Abdul Hamid, Wisam Hussam, Gregory Sheard

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Abstract

The design of vortex promoters in a heated wall duct is often limited by the considerations of practicality, especially in complex systems such as a fusion blanket. In the present study, a high-order spectral-element method is employed to solve the quasi-two-dimensional magnetohydrodynamic duct flow and heat transport. Electric currents from electrodes embedded in the duct walls are used to enhance instability in the cylinder wake, and thus the convective heat transfer from a duct wall is investigated. The hot and cold walls are parallel to the magnetic field, which is imposed in the direction parallel to the cylinder axis. The strength of the magnetic field, which is quantified by the friction parameter H, is varied between 200 and 2500, to explore its influences on the convective heat transport phenomenon. This investigation builds on a recommendation from previous work dedicated to understanding of the flow stability in a similar configuration. The results indicate that the imposed magnetic field strength and current injection significantly alters the dynamics behaviour of the wake behind a cylinder, and that the convective heat transfer improves by almost 50% with negligible additional pressure loss.
Original languageEnglish
Title of host publicationProceedings of 11th International Conference on CFD in the Minerals and Process Industries (2015)
EditorsChris B Solnordal, Petar Liovic, Gary W Delaney, Sharen J Cummins, M Phil Schwarz, Peter J Witt
Place of PublicationMelbourne Vic Australia
PublisherCSIRO Publishing
Pages1 - 6
Number of pages6
ISBN (Print)9781486306206
Publication statusPublished - 2015
EventInternational Conference on CFD in the Minerals and Process Industries 2015 - Melbourne, Australia
Duration: 7 Dec 20159 Dec 2015
Conference number: 11th
https://www.cfd.com.au/cfd_conf15/index.html

Conference

ConferenceInternational Conference on CFD in the Minerals and Process Industries 2015
Abbreviated titleCFD 2015
CountryAustralia
CityMelbourne
Period7/12/159/12/15
Internet address

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