Open AccessComputational Analysis of Natural Convection Heat Transfer on a Vertical Plate With Discrete Heat Sources
Author(s) -
Ravi Babu. S,
S. G.,
Ramesh Babu. P
Publication year - 2020
Publication title -
international journal of engineering and advanced technology
Language(s) - English
Resource type - Journals
ISSN - 2249-8958
DOI - 10.35940/ijeat.c6337.029320
Subject(s) - grashof number , natural convection , nusselt number , prandtl number , buoyancy , film temperature , mechanics , combined forced and natural convection , heat transfer , boussinesq approximation (buoyancy) , churchill–bernstein equation , convective heat transfer , thermodynamics , rayleigh number , physics , reynolds number , turbulence
In the present study, buoyancy driven free convection flow along the vertical plate with discrete heat sources is analyzed. To illustrate free convection heat transfer along a vertical plate with finite discrete heat sources a 2-D steady-state model is considered. The thermos-physical properties of fluid are assumed constant except for the buoyancy terms, which are computed using the Boussinesq approximation of Navier-stokes equation. The two-dimensional Navier-stokes equations are solved using SIMPLER algorithm. The dimensionless equations are descretised and solved by using central difference finite difference approach. The development of the air flow caused by buoyancy induced free convective heat transfer has been studied through the progression of velocity and temperature fields. The results are obtained for various Grashof numbers Gr=103 , 104 and 5x 104 , and the influence of Grashof number on flow field has been studied. Average Nusselt number at the plate is also obtained. The effect of variation of Prandtl number at a given Grashof number is also studied.