- All Journals
- Al-Qadisiyah University
- Basrah University
- Kirkuk University
- Mosul University
- The Iraqi Borad for Medical Specialization
- University of Anbar
- University of Technology
- Al Mustafa University
- Al-Zahraa University for Women
- Alnoor University
- Kunooz University
- Misan University
- Ninevah University
- Tikrit University
- University of Al-Hamdaniya
- University of Kerbala
Numerical Simulation of Two Dimensional Transient Natural Convection Heat Transfer from Isothermal Horizontal Cylindrical Annuli | ||
| Journal of Engineering | ||
| Article 1, Volume 13, Issue 2, 2007, Pages 1429-1444 | ||
| Authors | ||
| Jasim M. A. Al-lateef; Ayad K. Hassan | ||
| Abstract | ||
| Numerical solutions are presented for the transient natural convection heat transfer problem in horizontal isothermal cylindrical annuli, enclosed in heated inner and cooled outer cylinders. Solutions for laminar case were obtained within Grashof number based on the inner diameter which varied from 1x10^2 to 1x10^5 in air. Both vorticity and energy equations were solved using alternating direction implicit (ADI) method and stream function equation by successive over relaxation (SOR) method. The structure of fluid flow such as a velocity vector and temperature distribution as well as Nusselt number were obtained and the effect of diameter ratio on them is examined. In addition, the Grashof number was changed with the influence of variation Prandtle number and diameter ratio. Our numerical calculation are summarized by Nussult number vs. Grashof number curves with diameter ratios and prandtl as a parameter, which serves as a guide to natural convection heat transfer calculated from annulus. Good agreement with previous data were obtained. | ||
| Keywords | ||
| Natural Convection; NUMERICAL SIMULATION; Isothermal; Cylindrical Annuli | ||
|
Statistics Article View: 205 PDF Download: 60 |
||