NUMERICAL COMPUTATION OF BUOYANCY-DRIVEN FLOW AND HEAT TRANSFER IN VARIOUS ASPECT RATIOS CAVITIES FILLED WITH WATER
Hussain, S., Hussein, A., Al-Kayiem, H., Oztop, H. (2012). NUMERICAL COMPUTATION OF BUOYANCY-DRIVEN FLOW AND HEAT TRANSFER IN VARIOUS ASPECT RATIOS CAVITIES FILLED WITH WATER. EKB Journal Management System, 15(15th International Conference on Applied Mechanics and Mechanical Engineering.), 1-18. doi: 10.21608/amme.2012.37001
S. H. Hussain; A. K. Hussein; H. H. Al-Kayiem; H. F. Oztop. "NUMERICAL COMPUTATION OF BUOYANCY-DRIVEN FLOW AND HEAT TRANSFER IN VARIOUS ASPECT RATIOS CAVITIES FILLED WITH WATER". EKB Journal Management System, 15, 15th International Conference on Applied Mechanics and Mechanical Engineering., 2012, 1-18. doi: 10.21608/amme.2012.37001
Hussain, S., Hussein, A., Al-Kayiem, H., Oztop, H. (2012). 'NUMERICAL COMPUTATION OF BUOYANCY-DRIVEN FLOW AND HEAT TRANSFER IN VARIOUS ASPECT RATIOS CAVITIES FILLED WITH WATER', EKB Journal Management System, 15(15th International Conference on Applied Mechanics and Mechanical Engineering.), pp. 1-18. doi: 10.21608/amme.2012.37001
Hussain, S., Hussein, A., Al-Kayiem, H., Oztop, H. NUMERICAL COMPUTATION OF BUOYANCY-DRIVEN FLOW AND HEAT TRANSFER IN VARIOUS ASPECT RATIOS CAVITIES FILLED WITH WATER. EKB Journal Management System, 2012; 15(15th International Conference on Applied Mechanics and Mechanical Engineering.): 1-18. doi: 10.21608/amme.2012.37001

NUMERICAL COMPUTATION OF BUOYANCY-DRIVEN FLOW AND HEAT TRANSFER IN VARIOUS ASPECT RATIOS CAVITIES FILLED WITH WATER

The International Conference on Applied Mechanics and Mechanical Engineering
Article 62, Volume 15, 15th International Conference on Applied Mechanics and Mechanical Engineering., May 2012, Page 1-18  XML PDF (866.66 K)
Document Type: Original Article
DOI: 10.21608/amme.2012.37001
View on SCiNiTO View on SCiNiTO
Authors
S. H. Hussain1; A. K. Hussein2; H. H. Al-Kayiem3; H. F. Oztop4
1College of Engineering, Mechanical Engineering Department, Babylon University, Babylon City, Hilla , Iraq.
2College of Engineering, Mechanical Engineering Department, Babylon University, Babylon City, Hilla , Iraq. Corresponding author.
3Mechanical Engineering Department, University Teknologi Petronas, 31750 Tronoh , Perak, Malaysia.
4Department of Mechanical Engineering, Technology Faculty, Firat University, Elazig, Turkey.
Abstract
ABSTRACT
Two-dimensional steady laminar natural convection in a differentially heated cavity
filled with water and has various aspect ratios due to buoyancy force effect is
analyzed numerically. The governing mass, momentum and energy equations are
considered and a finite volume algorithm is used to capture the numerical solution.
The left vertical side wall of the cavity is linearly heated while the right vertical one is
maintained at constant cold temperature. The bottom wall is maintained at constant
hot temperature while the top wall is considered thermally insulated. The Rayleigh
number is varied from 103 to 106, while the cavity aspect ratio (W/H) is varied as 0.5,
1.0 and 2.0 respectively. Results are presented in the form of streamline and
isotherm contours. The results of the present work explain that the natural
convection phenomenon is significantly influenced by changing the cavity aspect
ratio, so that when the aspect ratio is high the convection effect is week and vice
versa. Also, it is found that non-uniform heating in the left vertical sidewall of the
cavity plays a major role to improve the heat transfer rates. For uniform and nonuniform
heating of the bottom wall and left vertical sidewall respectively, the local
Nusselt number at these walls increases from its minimum value at the left edge of
these walls toward maximum value at the right edge. While, the average Nusselt
number for both left side and bottom walls increases with increasing of Rayleigh
number.
Keywords
Buoyancy-driven flow; CFD simulation; aspect ratio; cavity; laminar flow and linear heating
Statistics
Article View: 97
PDF Download: 184