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Control of thermo magnetic heat transfer in porous cavity with Baffle(s)

Heidary, H ; Sharif University of Technology

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  1. Type of Document: Article
  2. DOI: 10.1115/IMECE2009-12142
  3. Abstract:
  4. Steady, laminar, natural-convection flow in the presence of a magnetic field in a porous cavity heated from left wall sinusoidally and cooled from right wall is considered. It is well known that unavoidable hydrodynamic movements can be damped with the help of a magnetic field. The Finite Volume method and SIMPLE algorithm for discretizing is used to solve the non-dimensional governing equations. The Convection and Diffusion term of the equations are discretized by Central Difference Scheme (CDS).The numerical procedure has been done over a range of Rayleigh number, Ra, and value of Hartmann number (Ha), 0 ≤ Ha ≤ 150 and effect of them is investigated on average and local Nusselt number. Effect of position and length of baffle in cavity in different models is studied in this paper. It is shown that as the value of Hartmann number (Ha) increases and with growth of baffle length, the convection heat transfer reduces. Also position and numbers of baffle play an important role in control of heat transfer
  5. Keywords:
  6. Heat exchangers ; Magnetic fields ; Magnetic materials ; Mechanical engineering ; Nusselt number ; Baffle length ; CDS ; Central difference scheme ; Convection and diffusion ; Convection flow ; Convection heat transfer ; Governing equations ; Hartmann numbers ; In-control ; Local Nusselt number ; Numerical procedures ; Porous cavities ; Rayleigh number ; Simple algorithm ; Heat convection
  7. Source: ASME International Mechanical Engineering Congress and Exposition, Proceedings, 13 November 2009 through 19 November 2009 ; Volume 9, Issue PART A , 2010 , Pages 627-631 ; 9780791843826 (ISBN)
  8. URL: http://proceedings.asmedigitalcollection.asme.org/proceeding.aspx?articleid=1640565