Effect of Prandtl Number and Inclination Angle on MHD Natural Convection in Inclined Open Square Cavity
Journal Title: Physical Science International Journal - Year 2017, Vol 14, Issue 4
Abstract
MHD natural convection and fluid flow in a two-dimensional open and inclined square cavity with a heated circular cylinder was considered in this work. The opposite wall to the opening side of the cavity was first kept to constant heat flux q, at the same time the surrounding fluid interacting with the aperture was maintained to an ambient temperature T. The top and bottom wall was kept to low and high temperature respectively. As a result a natural convection is formed in the cavity due to buoyancy force and temperature difference in the cavity. The governing equations for mass, momentum and energy conservation are expressed in a normalized primitive variables formulation. The streamlines and isotherms are produced, heat transfer parameter Nu are obtained for Prandtl number Pr = 0.72, 2, 5, 7 and inclination angles from 0°, 5°, 20°, 35°, 50° for fixed Hartmann number 60. The results are presented in graphical as well as tabular form. In the result it is found that heat flux is increasing function of Prandtl number Pr, while Rayleigh number is 10000 and heat flux is maximum when inclination angle is 5°. It is observed that fluid moves counterclockwise around the cylinder. Various recirculations are formed around the cylinder and one small vortex is formed into the flow field for 50° inclination and Pr = 0.72 near the cylinder. The almost all isotherm lines are concentrated at the right lower corner of the cavity. The present result agree with the existent heat transfer and boundary layer theory.
Authors and Affiliations
Sheikh Anwar Hossain, M. A. Alim, Satrajit Kumar Saha
Keywords
Related Articles
- EP ID EP321138
- DOI 10.9734/PSIJ/2017/33067
- Views 70
- Downloads 0
Comparison of Intercontinental Aerosols: Desert and Monsoon-Influenced Regions
AIM: This research project was undertaken to compare the optical and physical properties of aerosols at the 0.440 μm, 0.675 μm, 0.870 μm and 1.020 μm spectral wavelengths between desert and monsoon-influenced regions. In...
Thermal Performance of a Receiver Located in the Caustic Area of a Cylindro-Parabolic Solar Concentrator
Indirect solar dryers with solar collectors, do not always make it possible to reach the desired temperature level and drying time. As part of the improvement of the thermal performance of these systems, a study of the c...
Evaluation of Radiation Doses from Paediatric Chest X-ray Examination at Three Hospitals in South-West Nigeria
The aim of this study is essentially to evaluate radiation doses to paediatric patients who were referred for chest X-ray examination between April, 2015 and December, 2016 in three hospitals South-West, Nigeria. The met...
Theoretical Study of the Properties of Isatin (1H-indole-2,3-dione) Based Alternating Donor-acceptor Type Conjugated Oligomers
The potential of Isatin (1H-indole-2,3-dione) as a donor moiety in an alternating donor-acceptor conjugated oligomer models was studied. Eight different electron acceptor molecules investigated are: thiazole (Z),thiadiaz...
Land Use and Its Implication on Natural Environment of Donga LGA, Nigeria
The study assessed land use and land cover changes and its effect on the communities in southern Taraba specifically in Donga. The paper identify and delineate different LULC categories, evaluates the rate of change that...