Entropy Analysis of Generalized MHD Couette Flow Inside a Composite Duct with Asymmetric Convective Cooling

Vyas, Paresh; Srivastava, Nupur

doi:10.1007/s13369-014-1562-0

Cited by 21 publications

(12 citation statements)

References 28 publications

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“…Vyas and his coauthors 32‐36 examined entropy production in various thermofluidic configurations, which included Casson fluid, micropolar fluid, second‐order fluid, forced convection, temperature‐dependent convection coefficient, and so on, in Darcy and Darcy–Brinkman models. Here, it is recalled that the internal structure of the porous matrix differs from medium to medium and is found in form of interconnected voids, network of capillaries, cracks, and so on.…”

Section: Introductionmentioning

confidence: 99%

Micropolar couple stress thermofluidics and entropy in Forchheimer channel

2021

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This paper presents an analysis of the entropy generated in thermofluidic configuration involving micropolar couple stress fluid flow inside a Forchheimer channel. The channel is composed of a porous medium trapped between two parallel permeable plates separated by distance H through which the fluid can be sucked out/injected in. One of the plate bears a constant temperature and other is subjected to a uniform heat flux. A Cartesian coordinate system is chosen to model the flow configuration. The nondimensional nonlinear governing equations are solved by the differential transform method and Runge–Kutta–Fehlberg method to ascertain the accuracy of the results. Both the methods do match to the order of 10−6 for the quantities velocity, microrotation, and temperature. These quantities and their gradients are required to the compute entropy generation number. The effects of the parameters on entropy generation and Bejan number are discussed through various plots.

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Section: Introductionmentioning

confidence: 99%

Micropolar couple stress thermofluidics and entropy in Forchheimer channel

2021

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“…Rashidi et al 31 explored the analysis of entropy generation in MHD and slipped flow with variable properties through a rotating disk fixed in a porous medium. Vyas and Srivastava 32 analyzed the entropy generation for Couette flow through a composite duct including magnetic field and asymmetric convective cooling effects. Afridi et al 33 investigated the influences of porous and viscous dissipation on entropy analysis in the viscoelastic fluid flow over a linearly stretching sheet.…”

Section: Introductionmentioning

confidence: 99%

MHD Eyring–Powell nanofluid past over an unsteady exponentially stretching surface with entropy generation and thermal radiation

Agrawal

Kaswan

2021

Heat Trans

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This study's primary objective is to analyze the entropy generation in an unsteady magnetohydrodynamics (MHD) Eyring–Powell nanofluid flow. A surface that stretched out exponentially induced flow. The influences of thermal radiation, thermophoresis, and Brownian motion are also taken into consideration. The mathematical formulation for the transport of mass, momentum, and heat described by a set of partial differential equation is used, which is then interpreted by embracing the homotopy analysis method and with a fourth‐order precision program (bvp4c). Graphical results display the consequences of numerous parameters on velocity, temperature, concentration, and entropy generation. Moreover, escalating amounts of the magnetic parameter, thermal radiation parameter, Reynolds number, and Brinkman number improve the entropy profile of the nanofluid. The rate of heat flux and the mass flux conspicuously improves for non‐Newtonian fluid as compared to Newtonian fluid.

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“…Vyas and his co-authors [9][10][11][12][13][14][15] investigated entropy generation in various thermo-fluidic configurations. Chinyoka and Mankinde [16] presented an entropy generation analysis for an unsteady channel flow.…”

Section: Introductionmentioning

confidence: 99%

“…where, The local volumetric rate of entropy generation SG for the configuration under study is found as (following the authors in [9,12,13,20,25,33,34])…”

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confidence: 99%

Dual Entropy Regime in Channel Flow Subjected to Temperature Dependent Convection Mechanism

Vyas¹,

Khan²

2021

IJHT

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The central stimuli of this brief note is to underscore the effect of the temperature dependent convection coefficient that give rise to a dual temperature regime facilitating dual entropy distribution. In order to avoid unwarranted complexities, a simple geometry of shear flow in a channel is considered. The energy equation amenable to an analytic solution is simulated to extract the desired numerical findings in as much as for what parameters’ values, the temperature has dual distribution /does not yield temperature distribution at all. In fact, a range of parameter values have been worked out for which dual temperature regime exists or not. The plots of entropy generation number Ns also show the dual regime. The findings reveal a qualitative and quantitative difference in dual systems of temperature and entropy. It further underlines that the thermal systems with the idealized uniform heat transfer coefficient may be far distinct from actual behaviour and even weak temperature dependence of convection coefficient need due attention while designing a system.

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Entropy Analysis of Generalized MHD Couette Flow Inside a Composite Duct with Asymmetric Convective Cooling

Cited by 21 publications

References 28 publications

Micropolar couple stress thermofluidics and entropy in Forchheimer channel

Micropolar couple stress thermofluidics and entropy in Forchheimer channel

MHD Eyring–Powell nanofluid past over an unsteady exponentially stretching surface with entropy generation and thermal radiation

Dual Entropy Regime in Channel Flow Subjected to Temperature Dependent Convection Mechanism

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