Free convective heat and mass transfer induced by a constant heat and mass fluxes vertical wavy wall in a non-Darcy double stratified porous medium

Neagu, Maria

doi:10.1016/j.ijheatmasstransfer.2011.02.033

Cited by 14 publications

(4 citation statements)

References 21 publications

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“…It is to be noted that as → ∞ the expressions for unsteady velocity, temperature, concentration, skin friction, Nusselt number, and Sherwood number given by (10), (11), (12), (13), (14), and (15), respectively, approach to the corresponding expressions for steady state given by (17), (18), (19), (20), (21), and (22).…”

Section: Steady State Solutionmentioning

confidence: 98%

“…For example, Cheng [17] studied the coupled heat and mass transfer by natural convection near a vertical wavy surface in a non-Newtonian fluid saturated porous medium with thermal and mass stratification and obtained solutions by collocation method. Recently, Srinivasacharya and Reddy [18], Srinivasacharya and RamReddy [19], Rathish Kumar and Krishna Murthy [20], and Neagu [21] have investigated numerically on flow past plates and wavy surfaces taking double stratifications into account.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Unsteady Natural Convection Flow past an Infinite Cylinder with Thermal and Mass Stratification

Paul

Deka

2017

International Journal of Engineering Mathematics

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This paper presents an analytical solution of unsteady one-dimensional free convection flow past an infinite vertical circular cylinder in a stratified fluid medium. The dimensionless coupled linear governing partial differential equations are solved by Laplace transform technique for unit Prandtl number and Schmidt number. Effects of various physical parameters are presented with graphs. Numerical values of boundary layer thickness for different parameters are presented in table. Due to the effects of thermal and mass stratifications, the velocity, temperature, and skin friction, Nusselt number shows oscillatory behaviour at smaller times and then reaches steady state at larger times.

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Section: Steady State Solutionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Unsteady Natural Convection Flow past an Infinite Cylinder with Thermal and Mass Stratification

Paul

Deka

2017

International Journal of Engineering Mathematics

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“…Srinivasacharya and Surendar [22] examined the mixed convective along a vertical plate embedded in a doubly stratified porous media. Maria Naegu [23] worked on the analysis of free convective flow due to constant mass and heat fluxes over a wavy vertical wall in a doubly stratified non-Darcy porous medium.…”

Section: Introductionmentioning

confidence: 99%

Variable thermal conductivity and mass diffusivity effects in a free convective flow of doubly stratified non-darcian porous medium over a vertical plate

R.K,

Pullepu,

et al. 2024

International Journal of Applied Mechanics and Engineering

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The research in this article is carried out to study incompressible and unsteady free convective flow on a semi-infinite isothermal vertical plate in a doubly stratified non-Darcian porous media with variable mass diffusivity and variable thermal conductivity. The governing non-linear partial differential equations of flow were calculated by applying an implicit finite difference scheme of Crank-Nicolson type. Various parametric impacts on concentration profiles, temperature, velocity, as well Sherwood number, Nusselt number and skin friction, were examined and presented in graphs. It is examined that there exists a significant temperature decrease for high Darcy number in stratified fluids. Also, it is detected that the presence of stratification produces a considerable drop in skin friction while increases the mass and heat transfer rate. Comparison of current outcomes well agreed with the available solutions.

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“…Rahman et al [18] investigated free convection flow through a vertical wavy cone by considering temperature dependent viscosity and constant heat flux. Neagu [19] presented the analysis of the free convection flow through vertical wavy wall saturated in porous medium with heat and mass fluxes and obtained system was solved numerically.…”

Section: Introductionmentioning

confidence: 99%

Heat transfer in natural convection flow of nanofluid along a vertical wavy plate with variable heat flux

Mustafa

Javed

2019

THERM SCI

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The present analysis is concerned to examine the enhancement of heat transfer in natural convection flow of nanofluid through a vertical wavy plate assumed at variable heat flux. The rate of heat transfer in nanofluid flow as compared to pure water can be increased due to increase the density of nanofluid which depends on the density and concentration of nanoparticles. For this analysis, Tiwari and Das model is used by considering two nanoparticles i. e. Al 2 O 3 and Cu are suspended in a base fluid (water). A very efficient implicit finite difference technique converges quadratically is applied on the concerning PDE for numerical solution. The effects of pertinent parameters namely, volume fraction parameter of nanoparticle, wavy surface amplitude, Prandtl number and exponent of variable heat flux on streamlines, isothermal lines, local skin friction coefficient and local Nusselt number are shown through graphs. In this analysis, a maximum heat transfer rate is noted in Cu-water nanofluid through a vertical wavy surface as compared to Al 2 O 3 -water and pure water.

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Free convective heat and mass transfer induced by a constant heat and mass fluxes vertical wavy wall in a non-Darcy double stratified porous medium

Cited by 14 publications

References 21 publications

Unsteady Natural Convection Flow past an Infinite Cylinder with Thermal and Mass Stratification

Unsteady Natural Convection Flow past an Infinite Cylinder with Thermal and Mass Stratification

Variable thermal conductivity and mass diffusivity effects in a free convective flow of doubly stratified non-darcian porous medium over a vertical plate

Heat transfer in natural convection flow of nanofluid along a vertical wavy plate with variable heat flux

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