Effects of Radiation and Chemical Reaction on Heat and Mass Transfer by Natural Convection in a Micropolar Fluid-Saturated Porous Medium With Streamwise Temperature and Species Concentration Variations

Abstract

In this paper, the problem of coupled heat and mass transfer by a natural-convection boundary-layer fl ow of a micropolar fl uid past a vertical fl at plate in a saturated porous medium with streamwise sinusoidal variations of both the surface temperature and species concentration in the presence of thermal radiation and chemical reaction eff ects is investigated. A suitable set of dimensionless variables is used to transform the governing equations of the problem into a nonsimilar form. The resulting nonsimilar equations have the property that they reduce to various special cases previously considered in the literature. An adequate and effi cient implicit, tridiagonal fi nite diff erence scheme is employed for the numerical solution of the obtained equations. Various comparisons with previously published work are performed, and the results are found to be in excellent agreement. A representative set of numerical results for the velocity, temperature, and concentration profi les as well as the surface shear stress, rate of heat transfer, and the rate of mass transfer is presented graphically to show interesting features of the solutions.

An unsteady MHD flow of a second‐grade fluid passing through a porous medium in the presence of radiation absorption exhibits Hall and ion slip effects

“…Superseding Equations ( 24), ( 25) and ( 26) into Equations ( 19), (20), and ( 21), correlating the harmonic and nonharmonic representations, the negligent and higher-order representations of O ε ( ) 2 , acquires the subsequent pairs of equations q θ ϕ q θ ϕ ( , , ) and ( , , )…”

“…Gireesha et al 19 have studied the impact of radiation and heat source/sink on mixed convective Dusty fluid over a stretching sheet. Rashad et al 20 have reported natural convection boundary layer analysis of micropolar fluid through porous medium with radiation and chemical reaction. Rashidi et al 21 have presented the effect of thermal radiation on mixed convective flow and heat transfer of viscoelastic fluid over the porous wedge.…”

Sinusoidal Natural Convective Flow of Non-Newtonian Nanoliquid Over a Radiative Vertical Plate in a Saturated Porous Medium

“…Newton's quadratic linearization method combined with the . 27The coefficients in (26) are defined by This article has been accepted for publication in a future issue of this journal, but has not been fully edited. Content may change prior to final publication.…”

“…Hussanan et al [23] interpreted a Newtonian heating flow of micropolar liquid by free convective along a vertical plate. Some related investigations of micropolar liquids flow are explored in [24][25][26] through several geometry surfaces. Latest advancements in nanotechnology manifested a novel epoch of study known as micropolar nanoliquids.…”

A fully coupled seepage–heat transfer model including a dynamic heat transfer coefficient in fractured rock sample with a single fissure

“…Accordingly, laboratory investigations have mainly focused on a single fissure, and the fracture is usually prepared by splitting cylindrical granite in the Brazilian split test (Zhao and Tso 1993;Lu and Xiang 2012;Bai et al 2017;Li et al 2017). In other words, there are few experimental studies on the coupling of seepage and heat transfer in a single fissure (Rashad et al 2014;Wang et al 2017). Zhao conducted hydraulic-thermal experiments on granite samples to study the influence of the temperature field on the permeability of fractures and the convective heat transfer coefficient between the fracture water and the rock matrix.…”