MHD Free Convection and Entropy Generation in a Corrugated Cavity Filled with a Porous Medium Saturated with Nanofluids

Chamkha, Ali J.; Selimefendigil, Fatih

doi:10.3390/e20110846

Cited by 77 publications

(28 citation statements)

References 43 publications

(50 reference statements)

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“…Recent advancements in nanotechnology result to develop a modern class of heat transfer fluid referred to nanofluids prepared by dispersing nanometer-sized particles 10–50 nm (nanoparticles) of metals, non-metals, and carbide in the working fluid water, oil, and alcohol, etc. 1 – 6 . For the first time, the term nanofluid was used by Choi and Eastman 7 .…”

Section: Introductionmentioning

confidence: 99%

Shape effect on MHD flow of time fractional Ferro-Brinkman type nanofluid with ramped heating

Saqib

Khan

Shafie

et al. 2021

Sci Rep

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The colloidal suspension of nanometer-sized particles of Fe3O4 in traditional base fluids is referred to as Ferro-nanofluids. These fluids have many technological applications such as cell separation, drug delivery, magnetic resonance imaging, heat dissipation, damping, and dynamic sealing. Due to the massive applications of Ferro-nanofluids, the main objective of this study is to consider the MHD flow of water-based Ferro-nanofluid in the presence of thermal radiation, heat generation, and nanoparticle shape effect. The Caputo-Fabrizio time-fractional Brinkman type fluid model is utilized to demonstrate the proposed flow phenomenon with oscillating and ramped heating boundary conditions. The Laplace transform method is used to solve the model for both ramped and isothermal heating for exact solutions. The ramped and isothermal solutions are simultaneously plotted in the various figures to study the influence of pertinent flow parameters. The results revealed that the fractional parameter has a great impact on both temperature and velocity fields. In the case of ramped heating, both temperature and velocity fields decreasing with increasing fractional parameter. However, in the isothermal case, this trend reverses near the plate and gradually, ramped, and isothermal heating became alike away from the plate for the fractional parameter. Finally, the solutions for temperature and velocity fields are reduced to classical form and validated with already published results.

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Section: Introductionmentioning

confidence: 99%

Shape effect on MHD flow of time fractional Ferro-Brinkman type nanofluid with ramped heating

Saqib

Khan

Shafie

et al. 2021

Sci Rep

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“…It was also discovered that heat transfer and fluid friction are the two main reasons for entropy production in any heat transfer situation. The work has further been extended by several researchers [23][24][25][26][27][28][29] who have investigated the phenomenon of entropy in various flow and heat transfer configurations. However, very little attention has been given to biological fluid flows.…”

Section: Introductionmentioning

confidence: 99%

Second Law Analysis of Ciliary Pumping Transport in an Inclined Channel Coated with Carreau Fluid under a Magnetic Field

Munawar

Saleem

2020

Coatings

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A complete thermal analysis is performed for the propulsion of cilia in an inclined channel. Coating around the channel walls is provided by a Carreau fluid under a uniform magnetic field. Uniformly grown cilia produce propulsive metachronal waves by moving in a coordinated rhythm along the channel surface and adapt an elliptic path along the direction of flow. Using lubrication approximations, the governing equations, formulated in the wave frame of reference, are solved by the perturbation method. Validation of the analytic solution is provided by computing the solution numerically with the shooting method. This study is concerned with the parametric consequences on pertinent flow and heat transfer quantities, such as streamlines, velocity profile, temperature profile, entropy lines and the Bejan number. The results reveal that large cilia propel the axial velocity near the channel wall but put hindrance to the axial velocity and the temperature profile in the central part of the channel. The entropy production in the channel reduces for large cilia and a high Hartmann number.

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“…Every process in nature provides a positive or zero value of entropy generation rate. It is an essential aspect of the 2nd law of thermodynamics [ 21 , 22 ]. The study of entropy generation in closed domain has been analyzed in several studies [ 23 , 24 , 25 ].…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation on Convection and Thermal Radiation of Casson Fluid in an Enclosure with Entropy Generation

Alzahrani

Sivasankaran

Bhuvaneswari

2020

Entropy

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The goal of the current numerical simulation is to explore the impact of aspect ratio, thermal radiation, and entropy generation on buoyant induced convection in a rectangular box filled with Casson fluid. The vertical boundaries of the box are maintained with different constant thermal distribution. Thermal insulation is executed on horizontal boundaries. The solution is obtained by a finite volume-based iterative method. The results are explored over a range of radiation parameter, Casson fluid parameter, aspect ratio, and Grashof number. The impact of entropy generation is also examined in detail. Thermal stratification occurs for greater values of Casson liquid parameters in the presence of radiation. The kinetic energy grows on rising the values of Casson liquid and radiation parameters. The thermal energy transport declines on growing the values of radiation parameter and it enhances on rising the Casson fluid parameter.

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MHD Free Convection and Entropy Generation in a Corrugated Cavity Filled with a Porous Medium Saturated with Nanofluids

Cited by 77 publications

References 43 publications

Shape effect on MHD flow of time fractional Ferro-Brinkman type nanofluid with ramped heating

Shape effect on MHD flow of time fractional Ferro-Brinkman type nanofluid with ramped heating

Second Law Analysis of Ciliary Pumping Transport in an Inclined Channel Coated with Carreau Fluid under a Magnetic Field

Numerical Simulation on Convection and Thermal Radiation of Casson Fluid in an Enclosure with Entropy Generation

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