Stagnation point flow through ap orous medium towards a radially stretching sheet in the presence of uniform suction or injection and heat generation / Attia, Hazem Ali in Transactions of the ASME . Journal of fluids engineering, Vol. 134 N° 8 (Août 2012)  

Public ISBD [article]  inTransactions of the ASME . Journal of fluids engineering > Vol. 134 N° 8 (Août 2012) . - 05 p. Titre : Stagnation point flow through ap orous medium towards a radially stretching sheet in the presence of uniform suction or injection and heat generation Type de document : texte imprimé Auteurs : Attia, Hazem Ali, Auteur ; Karem Mahmoud Ewis, Auteur ; Mostafa A. M. Abdeen, Auteur Année de publication : 2012 Article en page(s) : 05 p. Note générale : fluids engineering Langues : Anglais (eng) Mots-clés : numerical solution  stagnation point  stretching sheet  suction  heat generation Index. décimale : 620.1 Essais des matériaux. Défauts des matériaux. Protection des matériaux Résumé : An analysis is made of the steady laminar axisymmetric stagnation point flow of an incompressible viscous fluid in a porous medium impinging on a permeable radially stretching sheet with heat generation or absorption. A uniform suction or blowing is applied normal to the plate which is maintained at a constant temperature. Similarity transformation is used to transform the governing partial differential equations to ordinary differential equations. The finite difference method and generalized Thomas algorithm are used to solve the governing nonlinear momentum and energy equations. The effects of the uniform suction/blowing velocity, the stretching parameter and the heat generation/absorption coefficient on both the flow field and heat transfer are presented and discussed. The results indicate that increasing the stretching parameter or the suction/blowing velocity decreases both the velocity and thermal boundary layer thicknesses. The effect of the stretching parameter on the velocity components is more apparent for suction than blowing while its effect on the temperature and rate of heat transfer at the wall is clearer in the case of blowing than suction. DEWEY : 620.1 ISSN : 0098-2202 En ligne : http://asmedl.org/getabs/servlet/GetabsServlet?prog=normal&id=JFEGA4000134000008 [...] [article] Stagnation point flow through ap orous medium towards a radially stretching sheet in the presence of uniform suction or injection and heat generation [texte imprimé] / Attia, Hazem Ali, Auteur ; Karem Mahmoud Ewis, Auteur ; Mostafa A. M. Abdeen, Auteur . - 2012 . - 05 p. fluids engineering Langues : Anglais (eng) in Transactions of the ASME . Journal of fluids engineering > Vol. 134 N° 8 (Août 2012) . - 05 p. Mots-clés : numerical solution  stagnation point  stretching sheet  suction  heat generation Index. décimale : 620.1 Essais des matériaux. Défauts des matériaux. Protection des matériaux Résumé : An analysis is made of the steady laminar axisymmetric stagnation point flow of an incompressible viscous fluid in a porous medium impinging on a permeable radially stretching sheet with heat generation or absorption. A uniform suction or blowing is applied normal to the plate which is maintained at a constant temperature. Similarity transformation is used to transform the governing partial differential equations to ordinary differential equations. The finite difference method and generalized Thomas algorithm are used to solve the governing nonlinear momentum and energy equations. The effects of the uniform suction/blowing velocity, the stretching parameter and the heat generation/absorption coefficient on both the flow field and heat transfer are presented and discussed. The results indicate that increasing the stretching parameter or the suction/blowing velocity decreases both the velocity and thermal boundary layer thicknesses. The effect of the stretching parameter on the velocity components is more apparent for suction than blowing while its effect on the temperature and rate of heat transfer at the wall is clearer in the case of blowing than suction. DEWEY : 620.1 ISSN : 0098-2202 En ligne : http://asmedl.org/getabs/servlet/GetabsServlet?prog=normal&id=JFEGA4000134000008 [...]

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