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Effects of suction and blowing on flow and heat transfer between two rotating spheres with time-dependent angular velocities / Omid Mahian in Journal of heat transfer, Vol. 133 N° 7 (Juillet 2011) 

Public ISBD [article]  in Journal of heat transfer > Vol. 133 N° 7 (Juillet 2011) . - pp. [071704/1-13] Titre : Effects of suction and blowing on flow and heat transfer between two rotating spheres with time-dependent angular velocities Type de document : texte imprimé Auteurs : Omid Mahian, Auteur ; Asgahr B. Rahimi, Auteur ; Ali Jabari Moghadam, Auteur Année de publication : 2011 Article en page(s) : pp. [071704/1-13] Note générale : Physique Langues : Anglais (eng) Mots-clés : Flow  and  heat  transfer  Rotating  spheres  Time-dependent  angular  velocities  Suction  and  blowing Index. décimale : 536 Chaleur. Thermodynamique Résumé : The effect of suction and blowing in the study of flow and heat transfer of a viscous incompressible fluid between two vertically eccentric rotating spheres is presented when the spheres are maintained at different temperatures and rotating about a common axis while the angular velocities of the spheres are arbitrary functions of time. The resulting flow pattern, temperature distribution, and heat transfer characteristics are presented for the various cases including exponential and sinusoidal angular velocities. These presentations are for various values of the flow parameters including rotational Reynolds number Re, and the blowing/suction Reynolds number Rew. The effects of transpiration and eccentricity on viscous torques at the inner and outer spheres are studied, too. As the eccentricity increases and the gap between the spheres decreases the viscous torque remains nearly unchanged. Results for special case of concentric spheres are obtained by letting eccentricity tend to zero. DEWEY : 536 ISSN : 0022-1481 En ligne : http://asmedl.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=JHTRAO00013300 [...] [article] Effects of suction and blowing on flow and heat transfer between two rotating spheres with time-dependent angular velocities [texte imprimé] / Omid Mahian, Auteur ; Asgahr B. Rahimi, Auteur ; Ali Jabari Moghadam, Auteur . - 2011 . - pp. [071704/1-13]. Physique Langues : Anglais (eng) in Journal of heat transfer > Vol. 133 N° 7 (Juillet 2011) . - pp. [071704/1-13] Mots-clés : Flow  and  heat  transfer  Rotating  spheres  Time-dependent  angular  velocities  Suction  and  blowing Index. décimale : 536 Chaleur. Thermodynamique Résumé : The effect of suction and blowing in the study of flow and heat transfer of a viscous incompressible fluid between two vertically eccentric rotating spheres is presented when the spheres are maintained at different temperatures and rotating about a common axis while the angular velocities of the spheres are arbitrary functions of time. The resulting flow pattern, temperature distribution, and heat transfer characteristics are presented for the various cases including exponential and sinusoidal angular velocities. These presentations are for various values of the flow parameters including rotational Reynolds number Re, and the blowing/suction Reynolds number Rew. The effects of transpiration and eccentricity on viscous torques at the inner and outer spheres are studied, too. As the eccentricity increases and the gap between the spheres decreases the viscous torque remains nearly unchanged. Results for special case of concentric spheres are obtained by letting eccentricity tend to zero. DEWEY : 536 ISSN : 0022-1481 En ligne : http://asmedl.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=JHTRAO00013300 [...]