Heat transfer enhancement of MHD flow by conducting strips on the insulating wall / Hulin Huang in Journal of heat transfer, Vol. 133 N° 2 (Fevrier 2011)  

Public ISBD [article]  inJournal of heat transfer > Vol. 133 N° 2 (Fevrier 2011) . - pp. [021902/1-6] Titre : Heat transfer enhancement of MHD flow by conducting strips on the insulating wall Type de document : texte imprimé Auteurs : Hulin Huang, Auteur ; Bo Li, Auteur Année de publication : 2011 Article en page(s) : pp. [021902/1-6] Note générale : Physique Langues : Anglais (eng) Mots-clés : Heat transfer enhancement Nonuniform electrical conductiv free surface Magnetohydrodynamic MHD flow Index. décimale : 536 Chaleur. Thermodynamique Résumé : Due to the magnetohydrodynamic (MHD) effect, which degrades heat transfer coefficients by pulsation suppression of the external magnetic field, on the electrically conducting flow, the wall with nonuniform electrical conductivity is employed in a MHD-flow system for heat transfer enhancement. The nonuniform electrical conductivity distribution of the channel wall could create alternate Lorentz forces along the spanwise direction, which can effectively produce flow disturbance, promote mixture, reduce the thickness of the boundary layer, and enhance heat transfer. So, the heat transfer performances enhanced by some conducting strips aligned with the mean flow direction on the insulating wall for free surface MHD flow are simulated numerically in this paper. The flow behaviors, heat transfer coefficients, friction factors, and pressure drops are presented under different Hartmann numbers. Results show that in the range of Hartmann numbers 30 DEWEY : 536 ISSN : 0022-1481 En ligne : http://asmedl.aip.org/vsearch/servlet/VerityServlet?KEY=JHTRAO&ONLINE=YES&smode= [...] [article] Heat transfer enhancement of MHD flow by conducting strips on the insulating wall [texte imprimé] / Hulin Huang, Auteur ; Bo Li, Auteur . - 2011 . - pp. [021902/1-6]. Physique Langues : Anglais (eng) in Journal of heat transfer > Vol. 133 N° 2 (Fevrier 2011) . - pp. [021902/1-6] Mots-clés : Heat transfer enhancement Nonuniform electrical conductiv free surface Magnetohydrodynamic MHD flow Index. décimale : 536 Chaleur. Thermodynamique Résumé : Due to the magnetohydrodynamic (MHD) effect, which degrades heat transfer coefficients by pulsation suppression of the external magnetic field, on the electrically conducting flow, the wall with nonuniform electrical conductivity is employed in a MHD-flow system for heat transfer enhancement. The nonuniform electrical conductivity distribution of the channel wall could create alternate Lorentz forces along the spanwise direction, which can effectively produce flow disturbance, promote mixture, reduce the thickness of the boundary layer, and enhance heat transfer. So, the heat transfer performances enhanced by some conducting strips aligned with the mean flow direction on the insulating wall for free surface MHD flow are simulated numerically in this paper. The flow behaviors, heat transfer coefficients, friction factors, and pressure drops are presented under different Hartmann numbers. Results show that in the range of Hartmann numbers 30 DEWEY : 536 ISSN : 0022-1481 En ligne : http://asmedl.aip.org/vsearch/servlet/VerityServlet?KEY=JHTRAO&ONLINE=YES&smode= [...]

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