Combined Effects of Viscous Dissipation and Joule Heating on Unsteady MHD Flow and Heat Transfer over a Stretching Sheet Saturated in Porous Medium

Sharma, Priya Vrat; Sinha, Sharad

doi:10.22457/apam.v14n3a5

Cited by 3 publications

(1 citation statement)

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“…Nirmala P. Ratchagar et al, [31] explained the hall current effect in oscillatory flow of a couple stress fluid in an inclined channel. Sharmam et al, [32] studied the combined effect of viscous dissipation and Joule heating on unsteady MHD Flow and heat transfer over a stretching sheet saturated in porous medium.…”

Section: Introductionmentioning

confidence: 99%

Heat transfer analysis of hybrid nano-fluid through porous medium

D¹

2022

sajet

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The main focus of this paper is to use water based hybrid nanofluid in place of ordinary fluid in porous medium to improve thermal properties. This paper deals with the effect of MHD and chemical reaction on a hybrid nanofluid through porous medium with suction/injection. We also studied the effects of MHD, heat source, suction/injection and chemical reaction influences on a hybrid nanofluid. Two types of nano particles namely copper (Cu) and Aluminum oxide (Al2O3) are suspended in base fluid (water) to form the hybrid nanofluid. Similarity transformations are used to change ordinary differential equations to partial equations, and then solved solved by perturbation method. Numerical investigation is carried out to test Skin friction, heat and mass transfer coefficient for different geometrical parameters.

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Section: Introductionmentioning

confidence: 99%

Heat transfer analysis of hybrid nano-fluid through porous medium

D¹

2022

sajet

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Analysis of MHD Fluid Flow and Heat Transfer Inside an Inclined Deformable Filter Chamber: Lie Group Method

Lekoko,

Magalakwe,

Khalique

2023

Int. J. Appl. Comput. Math

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This paper investigates MHD fluid flow and distribution of heat inside a filter chamber during a process of filtering particles from the fluid. A flow model of MHD viscous incompressible fluid inside a filter is studied to seek semi-analytical solutions which are analysed to find flow and heat dynamics that lead to optimal outflow (maximum filtrates) during filtration. Lie group method is used to reduce a system of four partial differential equations describing fluid flow and temperature distribution inside the filter chamber to a system of two ordinary differential equations. The reduced system is then solved by perturbation process to obtain semi-analytical solutions for flow velocity and temperature variation inside the chamber. To understand the flow dynamics and heat distribution of the underlying case study better, the influence of different parameters during filtration resulting from the filter design, flow dynamics and heat effects are graphically presented and analysed in order to identify a combination of flow parameters that yields the best filtration process. The findings show that to maximise filtrates production, more fluid injection is required during filtration. Moreover, from the findings, it is evident that the temperature increase inside the chamber arising from the Joule heating effect is ideal since it increases internal work done and hence increases filtrates production.

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Analysis of a Reactive flow in Rotating Concentric Cylinders

O. M.,

O. K.

2024

African Journal of Mathematics and Statistics Studies

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The introduction of bearing was to bring conveniences because it reduces the friction and whirring at the joint, especially for complex moving machines. Bearing was produced for smooth usage but the contrary is derived once they are being used on uneven roads or subjected to overloading. This may not sustain lives again but put them at risk which may lead to death sometimes. The governing equations were modeled based on the reviewed work, linearized and adopted with Hartmann number (Ha), Pressure gradient (G) and other parameters like Darcy number (Da), Prandtl number (Pr), Eckert number (Ec), Suction parameter (V_0) and Reynolds number (Re) but they were made to be equal to one (1) throughout the research work. The energy equation with reactive terms was tested and the value of G was at an interval of 0.50 from 0.00 to 2.00 while the Ha were considered at an interval of 1.00 from 1.00 to 10.00. Perturbation method was used to linearize the equations and was solved numerically using the semi-implicit finite difference scheme with Maple 18 software. When the value of Ha was observed from 0.00mms^(-1) to 20.00mms^(-1) with 0≤G≤2, it shows an increase in velocity which depicts reduction in the free flow of fluids in the rotating concentric cylinder. When G>0, there is smooth fluid flow in the system and the results show that the higher the value of G the more the fluid flow (0≤G≤2). The temperature of G on Ha reduces as the value of Ha on G increases suggesting that G≥10 can be used to stabilize the system’s temperature. The result of Ha on other parameters for both velocity and temperature increase as the value of Ha increases. Also, the maximum temperature of the system with reactive flow is very high; ranging from 0.05-0.30 deg∁. The results were in agreement with related works in literature.

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Combined Effects of Viscous Dissipation and Joule Heating on Unsteady MHD Flow and Heat Transfer over a Stretching Sheet Saturated in Porous Medium

Cited by 3 publications

References 13 publications

Heat transfer analysis of hybrid nano-fluid through porous medium

Heat transfer analysis of hybrid nano-fluid through porous medium

Analysis of MHD Fluid Flow and Heat Transfer Inside an Inclined Deformable Filter Chamber: Lie Group Method

Analysis of a Reactive flow in Rotating Concentric Cylinders

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