Role of suction/injection on steady fully developed mixed convection flow in a vertical parallel plate microchannel

Jha, Basant K.; Aina, Babatunde

doi:10.1016/j.asej.2016.05.001

Cited by 35 publications

(19 citation statements)

References 25 publications

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“…In addition, increasing injection (S < 0) causes the fluid velocity to grow as shown in Figure 4. 2,6 Figures 5 and 6 represent the effect of Eckert number (Ec) on temperature and velocity profiles. It is observed that increasing Eckert number increases both fluid temperature and velocity within the channel.…”

Section: Resultsmentioning

confidence: 99%

Steady natural convection heat and mass transfer flow through a vertical porous channel with variable viscosity and thermal conductivity

Ajibade

Ojeagbase

2020

Engineering Reports

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The present article studies the effects of suction/injection and variable physical properties on steady natural convection flow through a vertical channel. The investigation was done analytically using Differential Transformation Method (DTM). The variability in viscosity and thermal conductivity are considered linear function of temperature. The governing equations are transformed into a set of coupled nonlinear ordinary differential equations. Results obtained were compared with exact solution when some of the flow conditions were relaxed and results from DTM show an excellent agreement with the exact solution which was obtained analytically. The influence of the flow parameters on fluid temperature, concentration, and velocity are presented graphically and discussed for variations of the governing parameters. From the course of investigation, it was found that an increase in suction (S > 0) through the heated plate causes fluid temperature, velocity as well as concentration to decrease. However, an increase in injection causes heat transfer rate as well as skin friction at the heated plate to decrease.

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Section: Resultsmentioning

confidence: 99%

Steady natural convection heat and mass transfer flow through a vertical porous channel with variable viscosity and thermal conductivity

Ajibade

Ojeagbase

2020

Engineering Reports

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“…In most of the studies, nanofluids have been used as a cooling fluid to improve the heat transfer. Jha and Aina [14] reported that the volumetric flow rate increases by increasing injection and suction, while the heat transfer decreases. Also, the possibility of a return flow on the cold wall decreases with the Knudsen number.…”

Section: Introductionmentioning

confidence: 99%

Nanofluid flow in a microchannel with inclined cross-flow injection

2019

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This paper investigates forced convection of water/Al 2 O 3 nanofluid flow in a microchannel with inclined cross-flow injection on the lower wall. There are a number of injecting holes on its lower wall. Other walls are insulated. The effect of different parameters including injection angle and number of injections on slip flow and heat transfer is investigated. It is concluded that increasing the injection angle up to 94° lead to an enhancement of the slip velocity and the Nusselt number on the microchannel walls. The results demonstrate that maximum heat transfer corresponds to the injection angle of 94°. It is revealed that the variation of Nusselt number decreases with the number of injection. As the volume fraction of nanoparticles increases, the heat transfer rate increases.

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“…The systems of ordinary di erential equations (9)-(10) representing the de ned ow problem along with the boundary conditions (11)- (14) are highly nonlinear. The boundary value problems are converted into initial value problem.…”

Section: Solution Proceduresmentioning

confidence: 99%

“…It is obtained that rise in values of magnetic parameter leads to increase of velocity pro le. Impact of suction/injection on porous microchannel has been studied by Jha and Aina [14]. The result depicts that rate of heat transfer increases as mixed convection parameter increases.…”

Section: Introductionmentioning

confidence: 99%

MHD natural convection flow of Casson fluid in an annular microchannel containing porous medium with heat generation/absorption

Gireesha

Sindhu

2020

Nonlinear Engineering

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AbstractThis study has been conducted to focus on natural convection flow of Casson fluid through an annular microchannel formed by two cylinders in the presence of magnetic field. The process of heat generation/absorption is taken into consideration. Combined effects of various parameters such as porous medium, velocity slip and temperature jump are considered. Solution of the present mathematical model is obtained numerically using fourth-fifth order Runge-Kutta-Fehlberg method. The flow velocity, thermal field, skin friction and Nusselt number are scrutinized with respect to the involved parameters of interest such as fluid wall interaction parameter, rarefaction parameter, Casson parameter and Darcy number with the aid of graphs. It is established that higher values of Casson parameter increases the skin friction coefficient. Further it is obtained that rate of heat transfer diminishes as fluid wall interaction parameter increases.

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Role of suction/injection on steady fully developed mixed convection flow in a vertical parallel plate microchannel

Cited by 35 publications

References 25 publications

Steady natural convection heat and mass transfer flow through a vertical porous channel with variable viscosity and thermal conductivity

Steady natural convection heat and mass transfer flow through a vertical porous channel with variable viscosity and thermal conductivity

Nanofluid flow in a microchannel with inclined cross-flow injection

MHD natural convection flow of Casson fluid in an annular microchannel containing porous medium with heat generation/absorption

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