Variable Thermal Conductivity Influence on Hydromagnetic Flow Past a Stretching Cylinder in a Thermally Stratified Medium With Heat Source/Sink

Sreenivasulu, P.; Poornima, T.; Reddy, N. Bhaskar

doi:10.5098/hmt.9.20

Cited by 5 publications

(4 citation statements)

References 18 publications

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“…Fewer applications are in functioning of brain i.e., in neurobiology, magnetized employment of energy generation/absorption has a crucial role. These applications were well discussed by the researchers in their early works [21][22][23]. Konda et al [24] explored on variable heat sink/source on non-Newtonian fluid.…”

Section: Introductionmentioning

confidence: 99%

Heat Transfer Analysis of Micropolar fluid over a Vertical Cone with Non-Uniform Heat source and sink: Keller Box Method and Industrial Applications

Poornima

2024

Preprint

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A mathematical model is made to look at the heat moves through a micropolar viscoelastic fluid from a vertically isothermal cone to a steady-state free convection boundary layer flow that is laminar, nonlinear, and not isothermal. Using MATLAB programming, we transform the linear momentum, energy, angular momentum equations, and possible boundary conditions using the finite difference methodology (Keller Box method). Higher-order (fourth-order) partial differential equations (PDEs) can be solved using this method up to the Nth first-order partial differential equation (PDE). Evaluations are done on the following parameters: dimensionless stream-wise coordinate, ratio of relaxation to retardation times, Deborah number (De), Erigena vortex viscosity parameter (R), Prandtl number (Pr), non-uniform heat source and sink (A, B), radiation and surface temperature, and angular velocity in the boundary layer regime. The results of the calculations show that temperature (along with the thickness of the thermal boundary layer) drops and linear and angular velocity rise with an increasing ratio of retardation to relaxation periods. Elevating the Deborah number results in increased temperatures and micro-rotation magnitudes, but it also lowers the Nusselt number and linear flow. Viscoelastic micropolar fluid flow finds applications in various areas of fluid dynamics where the behaviour of complex fluids with both viscous and elastic properties, along with micro-rotation effects, plays a significant role. Some applications include polymer processing, biomedical engineering, rheology, environmental fluid dynamics, and complex fluid flows. The skin friction coefficient and the Nusselt number are shown with graphs, streamlines, and tables for changed values of the flow constraints.

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Section: Introductionmentioning

confidence: 99%

Heat Transfer Analysis of Micropolar fluid over a Vertical Cone with Non-Uniform Heat source and sink: Keller Box Method and Industrial Applications

Poornima

2024

Preprint

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“…Fewer applications are in functioning of brain i.e., in neurobiology, magnetized employment of energy generation/absorption has a crucial role. These applications were well discussed by the researchers in their early works [21][22][23]. Paul et al [24] thermally stratified Cu-Al 2 O 3 /water hybrid nanofluid flows over a vertically extending cylinder under the influence of an angled magnetic field and a heat source or sink.…”

Section: Introductionmentioning

confidence: 99%

Computational Approach on Convective-Magneto Trihybrid Nanoflow with Space Dependent Energy Source/Sink: Drug Delivery

Vinothkumar,

Poornima

2024

Contemp. Math.

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Iron oxide, Silver, Aluminium oxide, these nanoparticles individually or combined help in drug delivery especially aluminium oxide nanofluid used in an anti-blood pressure drug called 'Telmisartan'. Alumina and silver particles are used in manufacturing nanocomposites which have more antimicrobial properties. This is the reason for the current study of ternary nanofluids natural convective flow and efficacy of energy transfer in a bi-directionally sheet. Currently, ternary nanofluids (Fe3O4, Ag, Al2O3) are being taken for analysis. Usual water (H2O) is the conventional base fluid. Two different combinations of ternary nanofluids are used to get the average heat transfer rate, mixture ratios (Fe3O4 + Ag) and (Fe3O4 + Ag + Al2O3) when subjected to a variety of physical influences, including thermal radiation, magnetic fields, heat production and absorption, and nanoparticle volume amount. It is possible to solve the developed set of equations numerical results using the Keller box (finite differences) method with the help of MATLAB programming. This method helps in solving higher order partial differential equation (PDEs) to ordinary differential equation (ODEs). The investigations findings demonstrated that the ternary hybrid nanofluids specific heat capacity is directly impacted by temperature. Numerical solutions for Nusselt number, velocity profile, skin friction coefficient, temperature profiles have represented with the help of graphs and tables. The ternary hybrid nanoflow (Fe3O4 + Ag + Al2O3/H2O) transmits more energy for increasing volume fractions, comparing to the hybrid nanofluid (Fe3O4 + Ag/H2O). The study reveals the fact that metal oxides transfer more heat from the system than that of metals. The estimated error of heat transfer rate is higher in alumina nanoflow followed by silver and iron oxide nanofluid flows. The streamlines are equally spaced, but the energy flow amount is higher for the case M, S = 1 than M, S = 2. But in the case of stretching ratio parameter, the amount energy flow in α = 0.5 > α = 1.0. An equal amount of energy flow is observed for varied Biot number.

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“…Okedoye, (2014) studied the unsteady MHD mixed convection flow past an oscillating plate with heat source/sink. Sreenivasulu et al (2017) analyzed the variable thermal conductivity influence on Hydromagnetic flow past a stretching cylinder in a thermally stratified medium with heat source/sink.…”

Section: Introductionmentioning

confidence: 99%

Internal heat generation effect on radiation heat transfer MHD dissipating flow of a micropolar fluid with variable wall heat flux

Sreenivasulu¹,

Poornima

Nandanoor

2018

J. nav. arch. mar. engg.

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An analysis of the thermal radiation and viscous dissipation effects on an unsteady MHD mixed convection flow of a viscous incompressible fluid past a vertical porous plate, in the presence of variable wall heat flux and heat generation/absorption is presented. The free stream velocity follows an exponentially increasing or decreasing small perturbation law. The governing equations of the flow field are transformed into a system of non-linear ordinary differential equations by perturbation technique and then solved numerically by using the shooting method. The effects of the various parameters on the translation velocity, microrotation and temperature as well as the skin friction coefficient and couple stress coefficient at the wall are prepared with various values of the fluid properties.

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Variable Thermal Conductivity Influence on Hydromagnetic Flow Past a Stretching Cylinder in a Thermally Stratified Medium With Heat Source/Sink

Cited by 5 publications

References 18 publications

Heat Transfer Analysis of Micropolar fluid over a Vertical Cone with Non-Uniform Heat source and sink: Keller Box Method and Industrial Applications

Heat Transfer Analysis of Micropolar fluid over a Vertical Cone with Non-Uniform Heat source and sink: Keller Box Method and Industrial Applications

Computational Approach on Convective-Magneto Trihybrid Nanoflow with Space Dependent Energy Source/Sink: Drug Delivery

Internal heat generation effect on radiation heat transfer MHD dissipating flow of a micropolar fluid with variable wall heat flux

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