Controlling the natural convection of a non-Newtonian fluid using a flexible fin

Shahabadi, Mohammad; Mehryan, S.A.M.; Ghalambaz, Mohammad; Ismael, Muneer A.

doi:10.1016/j.apm.2020.11.029

Cited by 41 publications

(16 citation statements)

References 34 publications

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“…Mehryan et al 31 found that heat performance and the wall tension enhances by the increasing the heating intensity. Shahabadi et al 32 reported that the heat transfer rate at the hot wall do not follow the modulus Young value. Shahrestani et al 33 concluded that the overall stress exerted to the surface will be increased over 70 times by increasing the Prandtl number from 0.71 to 200.…”

Section: Introductionmentioning

confidence: 99%

Unsteady free convection in a composite enclosure having flexible wall

Alhashash

Saleh

2023

Advances in Mechanical Engineering

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Transient free convection in a composite enclosure having a cold flexible plate and a hot rigid plate is simulated numerically. It is assumed that the flexible plate is hyper-elastic. A porous layer with various sizes and permeabilities is attached to the rigid plate. The enclosure is filled with water. Fluid flow in the fluid domain was governed by the Navier–Stokes equations, and the flow within a saturated porous layer was governed by the Brinkman-Forchheimer extended Darcy model. The unsteady continuity, momentum, and energy equations are solved using the Arbitrary-Lagrangian-Eulerian (ALE) approach based on the fluid-structure interaction (FSI). It is found that the development of convective flow goes through initial, transitional, and stationary states. Each state interval is shifted by varying the Darcy number and Rayleigh number. In the transitional state, the deformation of the flexible parts reaches its maximum bending. The profile of the flexible plate at steady state is in a sinusoidal shape for the non-Darcy regime, while it is in an asymmetric parabolic shape for the Darcy regime. The steady state is reached for [Formula: see text], [Formula: see text], and [Formula: see text] before [Formula: see text].

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Section: Introductionmentioning

confidence: 99%

Unsteady free convection in a composite enclosure having flexible wall

Alhashash

Saleh

2023

Advances in Mechanical Engineering

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“…The authors have shown that it is possible to increase the average Nu up to 250%, as it is also possible to decrease it drastically with a careful choice of the fin. Similarly, Mehryan et al 18 examined the problem of a differentially heated enclosure with a baffle installed on the hot wall. In this study, the baffle is elastically flexible, and the fluid flowing through the cavity can be Newtonian or non-Newtonian.…”

Section: Introductionmentioning

confidence: 99%

Three-Dimensional Study of Magnetohydrodynamic Natural Convection, Entropy Generation, and Electromagnetic Variables in a Nanofluid Filled Enclosure Equipped with Inclined Fins

et al. 2022

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This article provides a numerical study on carbon nanotube–water nanofluid convection in a three-dimensional cavity under a magnetic field effect. Two walls are kept at a hot temperature, and the upper and lower horizontal walls are considered adiabatic. As a new configuration, the beneficial effect of using a nanofluid is coupled with the incorporation of cold V-shape obstacle placed in the cubic cavity; in addition, an external magnetic field is applied toward the horizontal x -axis direction. The finite element method based on the Galerkin’s Weighted Residual technique is used to solve the three-dimensional governing equations. In this paper, the ranges of the parameters used are the Hartmann number, varied from 0 to 100, Rayleigh number from 10 3 to 10 5 , nanofluid volume fraction between 0% and 4.5%, and the body V-shaped opening angle varied from 0 to 80°. The effect of the obstacle shape and the added nanoparticle concentration on the flow behaviors, the different instabilities generated, and the heat transfer exchanged were exposed. An enhancement in heat transfer was recorded by increasing the obstacle opening angle and the volume fraction of the carbon nanotubes. Special attention has also been devoted to the calculation of the different kinds of entropy generations.

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“…Furthermore, the Dimensions and shapes of the cavity are the most important prelude in many engineering applications such as biomedical devices, cooling of electronic devices, and geothermal engineering to control the heat transfer rate. Shahabadi et al 12 analyzed the fluid flow and heat transfer rate within the square cavity. In addition, L‐ and T‐shaped (special‐shaped) have largely been favored by researchers and architectures due to evading the column ledge from the wall and enhancing room space.…”

Section: Introductionmentioning

confidence: 99%

Numerical simulation of natural convection MHD flow in a wavy L‐shaped cavity with line heat source using hybrid EFGM/FEM

2022

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In the current paper, the natural convection of powerlaw nanofluid within a wavy L-shaped cavity under the magnetic field has been simulated by a hybrid (EFGM/ FEM) technique with parallel implementation. A line heat source with length L hs and height H hs is applied on the right vertical wall of the cavity. The cavity is filled with power-law non-Newtonian nanofluid. Parallel implementation with hybrid EFGM/FEM is used to solve the governing partial differential equations. Effect of Rayleigh number, Hartmann number, powerlaw index, aspect ratio, nanoparticle volume fraction,

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Controlling the natural convection of a non-Newtonian fluid using a flexible fin

Cited by 41 publications

References 34 publications

Unsteady free convection in a composite enclosure having flexible wall

Unsteady free convection in a composite enclosure having flexible wall

Three-Dimensional Study of Magnetohydrodynamic Natural Convection, Entropy Generation, and Electromagnetic Variables in a Nanofluid Filled Enclosure Equipped with Inclined Fins

Numerical simulation of natural convection MHD flow in a wavy L‐shaped cavity with line heat source using hybrid EFGM/FEM

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