Finite element study of biomagnetic fluid flow in a symmetrically stenosed channel

Türk, Önder; Tezer‐Sezgin, M.; Bozkaya, Canan

doi:10.1016/j.cam.2013.06.037

Cited by 9 publications

(9 citation statements)

References 12 publications

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“…24,25 On the other hand, research in pathological geometries has mainly limited to idealized vessels exhibiting one or multiple stenoses. [26][27][28][29][30] Among them is the numerical analysis of MHD blood flow in stenosed arteries treated as a non-Newtonian fluid using the Finite Differences (FD) method, 31 the BFD flow in stenosis, 32 and the study of MHD effects on blood flow through an irregular stenosis. 33 Misra et al 34 have also developed a mathematical model testing the MHD effects in a porous vessel with double stenoses.…”

Section: Introductionmentioning

confidence: 99%

Finite element analysis of magnetohydrodynamic effects on blood flow in an aneurysmal geometry

et al. 2014

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Section: Introductionmentioning

confidence: 99%

Finite element analysis of magnetohydrodynamic effects on blood flow in an aneurysmal geometry

et al. 2014

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“…They used photochromic tracer method to find out the velocity profile of pulsatile flow choosing three axial locations in a flow channel by applying a 2.9 Hz sinusoidal flow to find out the flow patterns in vessels having different degrees of constriction. Türk et al, [15] investigated the behavior of the bio fluid through symmetric stenosis of 40% and 60% constriction placed under magnetic source and found the flow to be affected by the presence of both stenosis and magnetic field. Mittal et al, [16] studied pulsatile blood flow through modeled arterial stenosis with 50% semicircular constriction and showed that the flow downstream of the stenosis exhibited all the classic features of post-stenotic flow.…”

Section: Introductionmentioning

confidence: 99%

“…Considerable amount of works has been done to observe the variation of different parameters in the blood flow in different modeled stenosis and also aneurysm. Stenosis and aneurysm of different shapes and sizes were studied [15,19,[22][23][24][25][31][32]. Several works have been done on the combination of stenosis and aneurysm in the same arterial location [26][27][28][29].…”

Section: Introductionmentioning

confidence: 99%

Effects of Severity and Dominance of Viscous Force on Stenosis and Aneurysm During Pulsatile Blood Flow Using Computational Modelling

Miah¹,

Hossain²,

Salehin³

2020

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Cardiovascular diseases are the predominant cause of the death globally. It has become a challenge for the clinicians to understand the behavior of the stenoses and aneurysms at different stages of the growth. A numerical analysis based on a finite volume approach is employed for a 2-D axisymmetric, incompressible, laminar flow to simulate and compare the pulsatile blood flow in the models of arterial stenosis and aneurysm of the same sizes. Two key parameters, Radial velocity distribution and wall shear stress (WSS) distribution, have been considered for analyzing and comparing stenosis and aneurysm of same sizes of 30% and 50% severity. These parameters have been compared using unsteady blood flow of two frequencies: Womersley number (W0) of 7.75 and 10. In addition, the extent of the effect of Womersley number (W0) has been discussed. A flow input waveform is presented in terms of sinusoid. The results implicate that the Womersley number has a little effect on the flow field when the sizes were varied, which indicates the dominance of viscous force on the flow field of the models considered. It has been observed that the severity of the stenosis or aneurysm has significant effect on the flow field and wall shear stress. It has been concluded that, for a particular depth of stenosis and aneurysm, with the same flow inputs, WSS is significantly high in the stenosis compared to that in aneurysm indicating severe risk in stenosis.

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“…In addition, ferrofluid can exhibit non-Newtonian behaviour [26][27][28][29]. However, most of the available works reported only on the effect of FHD on Newtonian fluid [2,23,[30][31][32][33][34][35][36][37][38][39][40][41][42][43]. Even if the magnetic field effect is included in power-law fluid flow, the works only used magnetic field effect of MHD [44][45][46][47][48][49].…”

Section: Introductionmentioning

confidence: 99%

“…A great deal of works have been done on the magnetic field undergoing external magnetic field in geometry other than straight channel. Biomagnetic fluid flow in stenosed channel has been studied by Tzirtzilakis [33], Xenos and Tzirtzilakis [34], and Türk et al [35]. Türk et al [36] studied the biomagnetic fluid flow in a channel with multiple stenoses.…”

Section: Introductionmentioning

confidence: 99%

Numerical Solution of Biomagnetic Power-Law Fluid Flow and Heat Transfer in a Channel

2020

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The effect of non-Newtonian biomagnetic power-law fluid in a channel undergoing external localised magnetic fields is investigated. The governing equations are derived by considering both effects of Ferrohydrodynamics (FHD) and Magnetohydrodynamics (MHD). These governing equations are difficult to solve due to the inclusion of source term from magnetic equation and the nonlinearity of the power-law model. Numerical scheme of Constrained Interpolation Profile (CIP) is developed to solve the governing equations numerically. Extensive results carried out show that this method is efficient on studying the biomagnetic and non-Newtonian power-law flow. New results show that the inclusion of power-law model affects the vortex formation, skin friction and heat transfer parameter significantly. Regardless of the power-law index, the vortex formation length increases when Magnetic number increases. The effect of this vortex however decreases with the inclusion of power-law where in the shear thinning case, the arising vortex is more pronounced than in the shear thickening case. Furthermore, increasing of power-law index from shear thinning to shear thickening, decreases the wall shear stress and heat transfer parameters. However for high Magnetic number, the wall shear stress and heat transfer parameters increase especially near the location of the magnetic source. The results can be used as a guide on assessing the potential effects of radiofrequency fields (RF) from electromagnetic fields (EMF) exposure on blood vessel.

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Finite element study of biomagnetic fluid flow in a symmetrically stenosed channel

Cited by 9 publications

References 12 publications

Finite element analysis of magnetohydrodynamic effects on blood flow in an aneurysmal geometry

Finite element analysis of magnetohydrodynamic effects on blood flow in an aneurysmal geometry

Effects of Severity and Dominance of Viscous Force on Stenosis and Aneurysm During Pulsatile Blood Flow Using Computational Modelling

Numerical Solution of Biomagnetic Power-Law Fluid Flow and Heat Transfer in a Channel

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