Nazar, Roslinda and Amin, Norsarahaida and Filip, Diana and Pop, Ioan
(2003)
*The Brinkman model for the mixed convection boundary layer flow past a horizontal circular cylinder in a porous medium.*
International Journal of Heat and Mass Transfer, 46
(17).
pp. 3167-3178.
ISSN 0017-9310

Full text not available from this repository.

Official URL: http://dx.doi.org/10.1016/S0017-9310(03)00122-4

## Abstract

The Brinkman model is used for the theoretical study of the mixed convection boundary layer flow past a horizontal circular cylinder with a constant surface temperature and embedded in a fluid-saturated porous medium in a stream flowing vertically upwards. Both the cases of a heated (assisting flow) and a cooled (opposing flow) cylinder are considered. It is shown that there are two governing dimensionless parameters, which are related to thermal and viscous effects. These are the Darcyâ€“Brinkman parameter C and the mixed convection parameter k. It is shown that for C Â¼ 0 the problem reduces to the similarity Darcys model, while for C 6Â¼ 0 the governing equations are non-similar and they have been solved numerically using the Keller-box method. It is found that heating the cylinder (k > 0) delays separation of the boundary layer and can, if the cylinder is warm enough (large values of k > 0), suppress it completely. On the other hand, cooling the cylinder (k < 0) brings the boundary layer separation point nearer to the lower stagnation point and for sufficiently cold cylinder (large values of k < 0) there will not be a boundary layer on the cylinder. A complete physical description of the problem is presented throughout the analysis. Some results were given in the form of tables. Such tables are very important and they can serve as a reference against which other exact or approximate solutions can be compared in the future

Item Type: | Article |
---|---|

Uncontrolled Keywords: | Consumption smoothing, nutritional status, shocks, social capital, South Africa |

Subjects: | Q Science > QA Mathematics |

Divisions: | Science |

ID Code: | 7229 |

Deposited By: | Nur Amal Zakiah Shamsudin |

Deposited On: | 02 Jan 2009 00:50 |

Last Modified: | 02 Jan 2009 00:50 |

Repository Staff Only: item control page