| Titre : | Analytic approximations for cooling turbine disks (2012) |
| Auteurs : | A. El-Nahhas, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | Transactions of the ASME . Journal of fluids engineering (Vol. 134 N° 8, Août 2012) |
| Article en page(s) : | 07 p. |
| Note générale : | fluids engineering |
| Langues : | Anglais |
| Index. décimale : | 620.1 (Essais des matériaux. Défauts des matériaux. Protection des matériaux) |
| Tags : | partial differencial equations ; channel flows ; non-newtonian fluids ; heat transfer, homotopy analysis method |
| Résumé : | In this paper, we use the homotopy analysis method as a tool to obtain analytic approximations to the nonlinear problem of the cooling of turbine disks with a non-Newtonian viscoelastic fluid. The application of this method is executed via a polynomial exponential basis. The effects on velocity and temperature profiles with variations of the cross viscosity parameter, the Reynolds number, and the Prandtl number are discussed. A comparison with corresponding results of the perturbation method is illustrated and also, as a result of application of the homotopy analysis method, an analytic evaluation for the Nusselt number compared to the perturbation method is achieved. |
| DEWEY : | 620.1 |
| ISSN : | 0098-2202 |
| En ligne : | http://asmedl.org/getabs/servlet/GetabsServlet?prog=normal&id=JFEGA4000134000008081103000001&idtype=cvips&gifs=Yes&ref=no |
