The Effect of Suction/Injection on Free Convection in a Micropolar Fluid Saturated Porous Medium under Convective Boundary Condition

RamReddy, Ch.; Pradeepa, T.

doi:10.1016/j.proeng.2015.11.335

Cited by 7 publications

(2 citation statements)

References 12 publications

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“…They found that fluid velocity decreases with increasing suction/injection parameter. Ram-Reddy and Pradeepa 5 solved numerically suction/injection on a free convection under convective boundary condition using Spectral Quasi-Linearization Method. Their work revealed that skin friction and heat and mass transfer increases as a result of increase in both cases of suction and injection.…”

Section: Introductionmentioning

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: Introductionmentioning

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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“…They found that as the suction/injection parameter increase, the velocity and temperature profiles as well as the rate of heat transfer decrease. Since then, many researchers have been working on the suction or injection effect with various physical conditions [see Ahmad (2016), Ganapathirao and Ravindran (2017), Hamid et al (2017), Maity et al (2016), Mohamed et al (2016), Naramgari and Sulochana (2016), Pandey and Kumar (2016), Ramesh Babu et al (2016), RamReddy and Pradeepa (2015), Rizwan-Ul-Haq et al (2016), Zaidi and Mohyud-Din (2016) and Zeeshan and Majeed (2016)].…”

Section: Stability Analysis On Stagnationpoint Flowmentioning

confidence: 99%

Stability analysis on the stagnation-point flow and heat transfer over a permeable stretching/shrinking sheet with heat source effect

Kamal

Zaimi

Ishak

et al. 2018

HFF

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Purpose This paper aims to analyze the behavior of the stagnation-point flow and heat transfer over a permeable stretching/shrinking sheet in the presence of the viscous dissipation and heat source effects. Design/methodology/approach The governing partial differential equations are converted into ordinary differential equations by similarity transformations before being solved numerically using the bvp4c function built in Matlab software. Effects of suction/injection parameter and heat source parameter on the skin friction and heat transfer coefficients as well as the velocity and temperature profiles are presented in the forms of tables and graphs. A temporal stability analysis will be conducted to verify which solution is stable for the dual solutions exist for the shrinking case. Findings The analysis indicates that the skin friction coefficient and the local Nusselt number as well as the velocity and temperature were influenced by suction/injection parameter. In contrast, only the local Nusselt number, which represents heat transfer rate at the surface, was affected by heat source effect. Further, numerical results showed that dual solutions were found to exist for the certain range of shrinking case. Then, the stability analysis is performed, and it is confirmed that the first solution is linearly stable and has real physical implication, while the second solution is not. Practical implications In practice, the study of the steady two-dimensional stagnation-point flow and heat transfer past a permeable stretching/shrinking sheet in the presence of heat source effect is very crucial and useful. The problems involving fluid flow over stretching or shrinking surfaces can be found in many industrial manufacturing processes such as hot rolling, paper production and spinning of fibers. Owing to the numerous applications, the study of stretching/shrinking sheet was subsequently extended by many authors to explore various aspects of skin friction coefficient and heat transfer in a fluid. Besides that, the study of suction/injection on the boundary layer flow also has important applications in the field of aerodynamics and space science. Originality/value Although many studies on viscous fluid has been investigated, there is still limited discoveries found on the heat source and suction/injection effects. Indeed, this paper managed to obtain the second (dual) solutions and stability analysis is performed. The authors believe that all the results are original and have not been published elsewhere.

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Flow of Blood Through a Porous Bifurcated Artery with Mild Stenosis Under the Influence of Applied Magnetic Field

Rao

Srinivasacharya

Reddy

2018

Numerical Heat Transfer and Fluid Flow

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The Effect of Suction/Injection on Free Convection in a Micropolar Fluid Saturated Porous Medium under Convective Boundary Condition

Cited by 7 publications

References 12 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

Stability analysis on the stagnation-point flow and heat transfer over a permeable stretching/shrinking sheet with heat source effect

Flow of Blood Through a Porous Bifurcated Artery with Mild Stenosis Under the Influence of Applied Magnetic Field

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