Numerical Study of Natural Convection Flow in an Inclined Open Cavity

2002 ◽  
Author(s):  
Morteza Nateghi ◽  
Steven W. Armfield
Keyword(s):  
Natural Convection ◽  
Numerical Study ◽  
Open Cavity ◽  
Convection Flow ◽  
Natural Convection Flow

scholarly journals A Numerical Study to Find the Effect of Boundary Conditions on Natural Convection Flow in an Open Cavity

2017 ◽  
Vol 36 ◽  
pp. 47-58
Author(s):  
Nishat Tasnim ◽  
MZI Bangalee
Keyword(s):  
Natural Convection ◽  
Boundary Conditions ◽  
Numerical Study ◽  
Open Cavity ◽  
Convection Flow ◽  
Cfd Simulations ◽  
Natural Convection Flow ◽  
Flow Phenomenon ◽  
Flow Phenomena ◽  
Computational Fluid Dynamics Cfd

In this study, effect of boundary conditions on natural convection flow in an open cavity has been studied numerically. The computational fluid dynamics (CFD) simulations are performed to investigate the natural convection flow phenomena within the cavity. The ?-? turbulence model is chosen to capture the turbulence phenomena of the flow. A numerical case is chosen from literature to validate the method used in this study. For accurate prediction of the flow phenomenon a sufficiently large surrounding domain around the cavity is considered. The effects of boundary conditions applied in the apertures of the open cavity are observed.GANIT J. Bangladesh Math. Soc.Vol. 36 (2016) 47-58

scholarly journals Effects of Different Boundary Conditions at the Surfaces of the Extended Computational Domain in Computing the Natural Convection Flow in an Open Cavity

2016 ◽  
Vol 64 (1) ◽  
pp. 31-37 ◽  
Author(s):  
Roushanara Begum ◽  
MZI Bangalee
Keyword(s):  
Natural Convection ◽  
Rayleigh Number ◽  
Boundary Conditions ◽  
Open Cavity ◽  
Stream Line ◽  
Convection Flow ◽  
Computational Domain ◽  
Physical Domain ◽  
Natural Convection Flow ◽  
Different Boundary Conditions

Effects of different boundary conditions at the surfaces of the extended computational domain on buoyancy driven natural convection flow in a three dimensional open cavity are studied numerically. This study is carried out for turbulent flow where Rayleigh number is greater than 108. Air is used as working fluid having properties at 25°C temperature and 1atm pressure. To capture the turbulent nature of the flow k - ? model is used. ANSYS CFX software is used to solve the governing equations subject to the corresponding boundary conditions. The methodology is verified through a satisfactory comparison with some published results. Average mass flow, temperature, stream line, contour velocity and velocity profile are studied at different height. An extended computational domain around the physical domain of the cavity at different surrounding conditions is considered to investigate the effect of its existence on the computation. Effects of different surrounding boundary conditions on the physical domain of the cavity are studied and reported.A relation among non-dimensional parameters such as Nusselt number, Rayleigh number, Prandlt number and Reynolds number is also reported.Dhaka Univ. J. Sci. 64(1): 31-37, 2016 (January)

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