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Electrode arrangement effect on natural convection in a horizontal enclosure

Ghazi, R ; Sharif University of Technology

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  1. Type of Document: Article
  2. DOI: 10.1115/ICNMM2009-82074
  3. Abstract:
  4. The heat transfer enhancement of natural convection, using electrohydrodynamic technique inside a horizontal enclosure heated from below, is studied numerically. The interactions between electric field, flow field, and temperature field are investigated by CFD methods. The flow and temperature fields are affected by voltage applied at the wire electrodes. For different voltages and number of electrodes, it is noticed that the Nusselt number increased in all cases and the best enhancement is obtained at lower Rayleigh numbers. It is also shown that increasing the number of electrodes doesn't always cause an increase in the heat transfer enhancement. Actually, when the number of electrodes is equal to the number of Bénard cells, the best heat transfer enhancement is obtained
  5. Keywords:
  6. CFD method ; Electrode arrangement ; Heat Transfer enhancement ; Rayleigh number ; Temperature field ; Wire electrode ; Computational fluid dynamics ; Electric fields ; Electrohydrodynamics ; Enclosures ; Heat exchangers ; Heat transfer coefficients ; Microchannels ; Natural convection ; Electrodes
  7. Source: ASME 2009 7th International Conference on Nanochannels, Microchannels, and Minichannels ; Issue PART A , 2009 , Pages 187-196 ; 9780791843499 (ISBN)
  8. URL: http://proceedings.asmedigitalcollection.asme.org/proceeding.aspx?articleid=1626465