Heat transfer enhancement via inhomogeneous thermal conductivity within vertical magnetohydrodynamic ducts

C. J. Camobreco, G. J. Sheard

Research output: Chapter in Book/Report/Conference proceedingConference PaperOther

Abstract

Inhomogeneous thermal conductivity disrupts the formation of the thermal boundary layer, increasing temperature gradients. This comes at the cost of reduced conducting area and natural convective velocities. However, at the low Prandtl numbers possessed by liquid metals (of order 102), such as fusion reactor breeder fluids, the former outweighs the latter, and heat transfer can be promoted. Quasi-two-dimensional mixed convection simulations of a magnetohydrodynamic vertical duct were performed in the Rayleigh number and interaction parameter ranges of 102 < Ra < 104 (with constant Pr = 0.022) and 100 < N < 1600 respectively. Heat transfer enhancement was observed when buoyant forces (proportional to Ra) were sufficiently stronger than electromagnetic forces (proportional to N), which are imposed by the confining magnetic field.

Original languageEnglish
Title of host publicationProceedings of the 21st Australasian Fluid Mechanics Conference, AFMC 2018
EditorsTimothy C.W. Lau, Richard M. Kelso
PublisherAustralasian Fluid Mechanics Society
ISBN (Electronic)9780646597843
Publication statusPublished - 2018
EventAustralasian Fluid Mechanics Conference 2018 - Adelaide Convention Centre, Adelaide, Australia
Duration: 10 Dec 201813 Dec 2018
Conference number: 21st
https://aomevents.eventsair.com/QuickEventWebsitePortal/21st-australasian-fluid-mechanics-conference/afmc2018

Publication series

NameProceedings of the 21st Australasian Fluid Mechanics Conference, AFMC 2018

Conference

ConferenceAustralasian Fluid Mechanics Conference 2018
Abbreviated titleAFMC 2018
CountryAustralia
CityAdelaide
Period10/12/1813/12/18
Internet address

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