Steady, laminar, natural-convection flow in the presence of a magnetic field cavity heated from left and cooled right is considered. In our formulation governing equations, mass, momentum, energy induction equations are applied to cavity. To solve differential finite volume code based on PATANKAR's SIMPLER method utilized. Numerical predictions obtained for wide range Rayleigh number (Ra) Hartmann (Ha) at Prandtl Pr = 0.733. When relatively strengthened, thermal resembles that conductive...

Abstract Free convection and entropy generation in an inclined square cavity filled with a porous medium is numerically studied this research the effect of partition on bottom wall investigated. The left enclosure heated sinusoidal function right cooled isothermally. Horizontal walls are adiabatic. governing equations solved domain by control volume approach based SIMPLE technique. numerical procedure has been done over range parameters such as Rayleigh number, height, width, location...

Steady, laminar, natural-convection flow in the presence of a magnetic field cavity heated from left and cooled right is considered. In our formulation governing equations, mass, momentum, energy induction equations are applied to cavity. To solve differential finite volume code based on Patankar's simpler method utilized. Numerical predictions obtained for wide range Rayleigh number (Ra) Hartmann (Ha) at Prandtl Pr = 0.733. At low regime with weak field, circulating formed When relatively...

The purpose of the present work is to investigate effect magnetic field on laminar natural-convection heat transfer inside a partitioned enclosure. In our formulation non linear governing equations, mass, momentum, and energy are applied A finite volume code based PATANKAR's SIMPLER method utilized. Results obtained for different Rayleigh numbers (Ra), Hartmann (Ha) baffle positions while Prandtl number constant (Pr=0.733). show that as Ra increases maximum absolute value stream function...

The buoyancy-driven magnetohydrodynamic flow in a liquid-metal-filled square enclosure is investigated by 2-D numerical simulation. differentially heated at two opposite vertical walls, the horizontal walls being adiabatic, and uniform magnetic field applied orthogonal to gravity vector. To solve governing nonlinear differential equations (mass, momentum, energy), finite-volume code based on Patankar's SIMPLER method utilized. results are obtained for Rayleigh number (Ra) of 5 × 10 <sup...

In this study natural convection heat transfer fluid flow and entropy generation in a porous inclined cavity the presence of uniform magnetic field is studied numerically. For control generation, one or two partitions are attached to horizontal walls. The left wall enclosure heated with sinusoidal function right cooled isothermally. Horizontal walls adiabatic. governing equations numerically solved domain by volume approach based on SIMPLE technique. influence Hartmann number, inclination...

Numerically investigation is carried out for magnetohydrodynamics natural convection in an inclined partitioned enclosure. The vertical walls are maintained isothermal at different temperatures and other adiabatic. Two insulated partitions located on horizontal walls. Non linear governing equations the fluid flow heat transfer solved inclination angle varying from 0 deg to 90 deg, three Hartmann numbers (100, 200, 300), nondimensional partition heights (0.166, 0.25, 0.33). Rayleigh number...

Numerically investigation is carried out for magnetohydrodynamics natural convection in an inclined partitioned enclosure. The vertical walls are maintained isothermal at different temperatures and other adiabatic. Two insulated partitions located on horizontal walls. Non linear governing equations the fluid flow heat transfer solved inclination angle varying from 0 deg to 90 deg, three Hartmann numbers (100, 200, 300), nondimensional partition heights (0.166, 0.25, 0.33). Rayleigh number...

In this study, the effect of water vapor injection on flow pattern, temperature contamination and emission pollutants has been studied. Also, impact spray angle axis investigated finally, fuel type geometry variables investigated. The results were compared with numerical simulations performed by other researchers showed that they are qualitatively acceptable. purpose work is to investigate amount flame NOx released from combustion. percentage injected, there significant changes in pressure...

Steady, laminar, natural-convection flow in the presence of a magnetic field differentially heated square cavity which two insulated horizontal baffles attached to its vertical walls is considered. The are at different temperatures while adiabatic. In our formulation governing equations, mass, momentum, energy and induction equations applied cavity. To solve differential finite volume code based on Patankar’s SIMPLER method utilized. Numerical predictions obtained for various Rayleigh number...

Numerical simulation of magneto-convection heat transfer and fluid flow is analysed in an enclosure with a centrally located adiabatic square-shaped body using finite volume method. The enclosure's opposite walls (right left) are heated cooled, respectively, the other adiabatic. effects Rayleigh number ( Ra = 10 3 —10 6 ), Hartmann Ha 0, 50, 100), ratio body's length to W/ L 0.1—0.9) on temperature fields analysed. Prandtl assumed be 0.02 representing liquid metal. In casting process, when...

In this study, the finite volume method is used to simulate turbulent natural convection in a square partitioned cavity. paper fluid-flow with Pr = 0.01 and Ra 106 107 presence of magnetic field investigated. The fluid properties are function temperature. A parametric study carried out using following parameters: non-dimensional different partition position from 0.2 0.6, height 0.1 0.4, Hartmann numbers 0 200. It found that Nusselt number decreasing height, Hp, partitions, Dp, affects on...

The purpose of this study is to investigate the effect insulated horizontal baffle placed at hot wall a differentially heated square cavity. vertical walls are different temperatures while adiabatic. In our formulation governing equations, mass, momentum and energy equations applied cavity baffles. To solve differential finite volume code based on Patankar’s SIMPLER method utilized [1]. Results presented for Rayleigh number from 104 up 106 in form streamlines, isotherms Nusselt number....

Numerical study natural convection heat transfer inside a differentially heated square cavity with adiabatic horizontal walls and vertical isothermal is investigated. Two perfectly conductive thin fins are attached to the walls. To solve governing differential mass, momentum energy equations finite volume code based on Pantenkar’s simpler method developed utilized. The results presented in form of streamlines, isotherms as well Nusselt number for Rayleigh ranging from 104 up 107. It shown...

The purpose of the present work is to perform a numerical simulation study effect magnetic field on transient laminar natural-convection heat transfer inside an enclosure. In our formulation nonlinear governing equations, mass, momentum, energy and induction equations are applied A finite volume code based PATANKAR's SIMPLER method utilized. Results obtained for Rayleigh number (Ra) 7times10 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML"...

In this research, turbulent MHD convection of liquid metal with constant and variable properties is investigated numerically. The finite volume method applied to model the fluid flow natural heat transfer in a square cavity. were simulated compared for two cases properties. It observed that case high Hartmann numbers (Ha) temperature slope near hot wall more than cold wall. For both cases, gradient walls high. By applying magnetic field increasing Ha reduces so at Ha=800 profile linear....

In this study the effect of magnetic Reynolds number variation on distribution natural convection heat transfer in an enclosure is numerically investigated. The geometry a two dimensional which left wall hot, right cold and top bottom walls are adiabatic. Fluid molten sodium with Pr=0.01 for Rayleigh number, Ra=105 , numbers 10-1, 10-3 10-5 considered governing equations including continuum, momentum, energy induction solved together concurrent. numerical method finite volume simpler...

The effect of temperature-dependent thermal conductivity on the magneto-convection in a low Prandtl number liquid is investigated numerically. contained closed square cavity with isothermal vertical walls kept at different temperatures. top and bottom are assumed to be insulated. To solve governing non-linear differential equations (mass, momentum energy) finite volume code based SIMPLER algorithm utilized. results for Rayleigh numbers (Ra), Hartmann (Ha) temperature coefficient (η)...

Numerical simulation of natural convection heat transfer in the presence a magnetic field is analyzed non-isothermally heated square enclosure. The left wall and cooled with sinusoidal source right isothermally. horizontal walls enclosure are adiabatic. effects Rayleigh number (Ra = 104, 105 106), Hartmann (Ha 0, 25, 50 100) amplitude function (n 0.25, 0.5 1) on temperature flow fields analyzed. It observed that rate decreased increasing number; it also when decreasing function.

Nickel based superalloys are widely used in such applications as gas turbine blades due to their excellent mechanical properties at elevated temperatures. Oxidation is one of the life limiting factors temperatures since it accelerates failure mechanisms, e.g. fatigue and creep. In this project, oxidation behavior Ni-3Al-4.8Ti-9.5Co-14Cr (wt.%) superalloy was investigated under various testing conditions. The alloy investment-cast with preferential crystal growth direction [100]. Isothermal...

Numerical study of natural convection heat transfer inside a differentially heated square enclosure with adiabatic horizontal walls and vertical isothermal is investigated. Two insulated ribs are symmetrically located on walls. The governing non-linear equations solved in two-dimensional domain using control volume method the SIMPLER algorithm for velocity–pressure coupling employed. results will be presented forms streamlines, isotherms Nusselt number Rayleigh 106. It shown that small rib...

Numerically investigation is carried out for natural convection in a partitioned enclosure the present of horizontally magnetic field. The vertical walls are maintained isothermal at different temperatures and other adiabatic. Two insulated partitions located on horizontal walls. Non linear governing equations fluid flow heat transfer solved partition position Hartmann numbers. Rayleigh number Prandtl 10 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML"...