| نویسندگان | M. Pirmohammadi, M. Ghassemi, Gh. A. Sheikhzadeh |
|---|---|
| نشریه | IEEE TRANSACTIONS ON MAGNETICS |
| ارائه به نام دانشگاه | University of Kashan |
| شماره صفحات | 407-411 |
| شماره سریال | 1 |
| شماره مجلد | 45 |
| نوع مقاله | Full Paper |
| تاریخ انتشار | February 2009 |
| رتبه نشریه | ISI |
| نوع نشریه | چاپی |
| کشور محل چاپ | ایالات متحدهٔ امریکا |
چکیده مقاله
Steady, laminar, natural-convection flow in the presence of a magnetic field in a cavity heated from left and cooled from right is considered. In our formulation of the governing equations, mass, momentum, energy and induction equations are applied to the cavity. To solve the governing differential equations a finite volume code based on PATANKAR's SIMPLER method is utilized. Numerical predictions are obtained for a wide range of Rayleigh number (Ra) and Hartmann number (Ha) at the Prandtl number Pr = 0.733. When the magnetic field is relatively strengthened, the thermal field resembles that of a conductive distribution, and the fluid in much of the interior is nearly stagnant. Further, when the magnetic field is weak and the Rayleigh number is high, the convection is dominant and vertical temperature stratification is predominant in the core region. However, for sufficiently large Ha, the convection is suppressed and the temperature stratification in the core region diminishes. The numerical results show that the effect of the magnetic field is to decrease the rate of convective heat transfer and the average Nusselt number decreases as Hartmann number increases. The results are presented for Rayleigh number from 10<sup>4</sup> up to 10<sup>6</sup> and are in form of streamlines, isotherms, and Nusselt number for various Rayleigh and Hartman numbers.