Abstract
Temperature transfer by virtue of natural convection for visualizing heat transport characteristics through heatline method within a prismatic cavity filled with Cu-H2O nanofluid considering two different temperature boundary conditions is performed numerically. Two top inclined walls are warmed-up at low temperature whilst the bottom wall is heated two different heated conditions such as uniform temperature condition and linear temperature condition. Two vertical walls are insulated. Finite element technique of Galerkin weighted residual form is employed for solving nonlinear partial differential equations for numerical calculation. Heatlines, isotherm contours, streamline contours, and Nusselt number are employed for displaying numerical simulated results for the model parameters entitled nanoparticles volume fraction, Hartmann number and Rayleigh number. The outcomes indicate that heat transfer rate has a significant impact on thermal boundary condition and shape of the nanoparticles. The temperature transfer value enhances significantly for higher Rayleigh number as well as nanoparticles volume fraction. Hartmann number has a positive impact on fluid flow and temperature transport. The characteristics of heat transport using heatlines method are also performed for predicting the better energy transform compared to isotherm contours. In addition, different types of nanofluids are also employed to examine the best heat transport performance.
Highlights
List of symbols B0 Magnetic field strength cp Specific heat at constant pressure g Acceleration of gravitation Ha Hartmann number k Thermal conductivity L Cavity length Nuav Average Nusselt number NuL Local Nusselt number p Dimensional pressure P Non-dimensional pressure Pr Prandtl number Ra Rayleigh number T Fluid temperature u, v Dimensional velocity component U, V Dimensionless velocity component x, y Dimensional coordinates X, Y Non-dimensional coordinates zjhu.edu.cn
The convective flow and temperature into cupper-water nanofluid within a prismatic enclosure to visualize the heatline has been investigated considering two various heated boundary conditions
At low Rayleigh number, the elementary form of temperature flow is conduction and influence nanoparticles are more pronounced on heat transfer
Summary
List of symbols B0 Magnetic field strength cp Specific heat at constant pressure g Acceleration of gravitation Ha Hartmann number k Thermal conductivity L Cavity length Nuav Average Nusselt number NuL Local Nusselt number p Dimensional pressure P Non-dimensional pressure Pr Prandtl number Ra Rayleigh number T Fluid temperature u, v Dimensional velocity component U, V Dimensionless velocity component x, y Dimensional coordinates X, Y Non-dimensional coordinates zjhu.edu.cn. Jou et al.[3] investigated numerically about free conventional temperature augmentation within a rectangle shape cavity using nanofluids. Ece et al.[4] performed about magnetic field influence on free convective flow using warm-up and cold adjoining walls within a rectangle shape enclosure. Ghasemi et al.[7] performed regarding free convective temperature flow using CuO-water nanofluids within the dangling cavity. Seleh et al.[10] investigated about free convectional temperature flow employing nanofluids within trapezoid shape cavity. Basak et al.[12] investigated regarding the analysis of heatlines upon free convectional flow employing nanofluids within a square enclosure for several warmed-up boundary systems. Cheikh et al.[13] investigated regarding fee convectional flow of nanofluids within a square cavity employing a non-uniform warmed-up conditions. Salma et al.[15] investigated about free convectional flow of nanofluids within a prismatic enclosure
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