Documents disponibles écrits par cet auteur

Flow and heat transfer of Jeffrey fluid over a continuously moving surface with a parallel free stream / Hayat, T. in Journal of heat transfer, Vol. 134 N° 1 (Janvier 2012) 

Public ISBD [article]  in Journal of heat transfer > Vol. 134 N° 1 (Janvier 2012) . - 07 p. Titre : Flow and heat transfer of Jeffrey fluid over a continuously moving surface with a parallel free stream Type de document : texte imprimé Auteurs : Hayat, T., Auteur ; Z. Iqbal, Auteur ; Mustafa, M., Auteur Année de publication : 2012 Article en page(s) : 07 p. Note générale : Heat transfer Langues : Anglais (eng) Mots-clés : Boundary  layers  External  flows  Flow  simulation  Heat  transfer  Non-Newtonian  flow  Non-Newtonian  fluids  Rheology Index. décimale : 536 Chaleur. Thermodynamique Résumé : This communication studies the flow and heat transfer characteristics over a continuously moving surface in the presence of a free stream velocity. The Jeffrey fluid is treated as a rheological model. The series expressions of velocity and temperature fields are constructed by applying the homotopy analysis method (HAM). The influence of emerging parameters such as local Deborah number (beta), the ratio of relaxation and retardation times (lambda2), the Prandtl number (Pr), and the Eckert number (Ec) on the velocity and temperature profiles are presented in the form of graphical and tabulated results for different values of lambda. It is found that the boundary layer thickness is an increasing function of local Deborah number (beta). However, the temperature and thermal boundary layer thickness decreases with the increasing values of local Deborah number (beta). DEWEY : 536 ISSN : 0022-1481 En ligne : http://asmedl.org/getabs/servlet/GetabsServlet?prog=normal&id=JHTRAO000134000001 [...] [article] Flow and heat transfer of Jeffrey fluid over a continuously moving surface with a parallel free stream [texte imprimé] / Hayat, T., Auteur ; Z. Iqbal, Auteur ; Mustafa, M., Auteur . - 2012 . - 07 p. Heat transfer Langues : Anglais (eng) in Journal of heat transfer > Vol. 134 N° 1 (Janvier 2012) . - 07 p. Mots-clés : Boundary  layers  External  flows  Flow  simulation  Heat  transfer  Non-Newtonian  flow  Non-Newtonian  fluids  Rheology Index. décimale : 536 Chaleur. Thermodynamique Résumé : This communication studies the flow and heat transfer characteristics over a continuously moving surface in the presence of a free stream velocity. The Jeffrey fluid is treated as a rheological model. The series expressions of velocity and temperature fields are constructed by applying the homotopy analysis method (HAM). The influence of emerging parameters such as local Deborah number (beta), the ratio of relaxation and retardation times (lambda2), the Prandtl number (Pr), and the Eckert number (Ec) on the velocity and temperature profiles are presented in the form of graphical and tabulated results for different values of lambda. It is found that the boundary layer thickness is an increasing function of local Deborah number (beta). However, the temperature and thermal boundary layer thickness decreases with the increasing values of local Deborah number (beta). DEWEY : 536 ISSN : 0022-1481 En ligne : http://asmedl.org/getabs/servlet/GetabsServlet?prog=normal&id=JHTRAO000134000001 [...]

Soret and dufour effects on the stagnation-point flow of a micropolar fluid toward a stretching sheet / Hayat, T. in Transactions of the ASME . Journal of fluids engineering, Vol. 133 N° 2 (Fevrier 2011) 

Public ISBD [article]  in Transactions of the ASME . Journal of fluids engineering > Vol. 133 N° 2 (Fevrier 2011) . - 09 p. Titre : Soret and dufour effects on the stagnation-point flow of a micropolar fluid toward a stretching sheet Type de document : texte imprimé Auteurs : Hayat, T., Auteur ; Mustafa, M., Auteur ; Obaidat, S., Auteur Année de publication : 2011 Article en page(s) : 09 p. Note générale : Fluids engineering Langues : Anglais (eng) Mots-clés : Micropolar  fluid  Nonlinear  problems  Homotopy  solution  Stretching  sheet Index. décimale : 620.1 Essais des matériaux. Défauts des matériaux. Protection des matériaux Résumé : This communication reports the heat and mass transfer analysis in the stagnation-point flow toward a stretching sheet. An incompressible micropolar fluid takes into account the diffusion-thermo- (Dufour) and thermal-diffusion (Soret) effects. The arising nonlinear differential system is solved by homotopy analysis method. Convergence of the obtained homotopy solutions is clearly justified. Special emphasis has been given to various physical parameters through graphs and tables. It is noticed that fields are influenced appreciably with the variation of embedding parameters. A comparison of the present results with the existing numerical solution is discussed in a limiting sense. DEWEY : 620.1 ISSN : 0098-2202 En ligne : http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=JFEGA400013 [...] [article] Soret and dufour effects on the stagnation-point flow of a micropolar fluid toward a stretching sheet [texte imprimé] / Hayat, T., Auteur ; Mustafa, M., Auteur ; Obaidat, S., Auteur . - 2011 . - 09 p. Fluids engineering Langues : Anglais (eng) in Transactions of the ASME . Journal of fluids engineering > Vol. 133 N° 2 (Fevrier 2011) . - 09 p. Mots-clés : Micropolar  fluid  Nonlinear  problems  Homotopy  solution  Stretching  sheet Index. décimale : 620.1 Essais des matériaux. Défauts des matériaux. Protection des matériaux Résumé : This communication reports the heat and mass transfer analysis in the stagnation-point flow toward a stretching sheet. An incompressible micropolar fluid takes into account the diffusion-thermo- (Dufour) and thermal-diffusion (Soret) effects. The arising nonlinear differential system is solved by homotopy analysis method. Convergence of the obtained homotopy solutions is clearly justified. Special emphasis has been given to various physical parameters through graphs and tables. It is noticed that fields are influenced appreciably with the variation of embedding parameters. A comparison of the present results with the existing numerical solution is discussed in a limiting sense. DEWEY : 620.1 ISSN : 0098-2202 En ligne : http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=JFEGA400013 [...]