16 research outputs found
Natural convection in a square cavity with uniformly heated and/or insulated walls using marker-and-cell method
In this study, a numerical investigation has been performed using the computational Harlow-Welch MAC (Marker and Cell) finite difference method to analyse the unsteady state two-dimensional natural convection in lid-driven square cavity with left wall maintained at constant heat flux and remaining walls kept thermally insulated. The significant parameters in the present study are Reynolds number (Re), thermal Grashof number (Gr) and Prandtl number (Pr) and Peclét number (Pe =PrRe). The structure of thermal convection patterns is analysed via streamline, vorticity, pressure and temperature contour plots. The influence of the thermophysical parameters on these distributions is described in detail. Validation of solutions with earlier studies is included. Mesh independence is also conducted. It is observed that an increase in Prandtl number intensifies the primary circulation whereas it reduces the heat transfer rate. Increasing thermal Grashof number also decreases heat transfer rates. Furthermore the isotherms are significantly compressed towards the left (constant flux) wall with a variation in Grashof number while Peclét number is fixed. The study is relevant to solar collector heat transfer simulations and also crystal growth technologies
Flows in a Fluid Layer Induced by the Combined Action of a Shear Stress and the Soret Effect
Effect of the boundary conditions on convection in a horizontal fluid layer with the Soret contribution
Linear Stability of Cold Water Layer Saturating an Anisotropic Porous Medium - Effect of Confinement
Onset of Double-Diffusive Convection in a Rectangular Porous Cavity Subject to Mixed Boundary Conditions
Onset of Convection in a Horizontal Anisotropic Porous Layer Saturated With Water Near 4 Degrees C
Onset of penetrative convection of cold water in a porous layer under mixed boundary conditions
Onset of Convection in an Anisotropic Porous Medium Heated From Below by a Constant Heat Flux
Onset of Convection in a Horizontal Porous Enclosure Heat by a Heat Flux from Below
NRC publication: Ye