scholarly journals Micropolar Blood Flow in a Magnetic Field

Fluids ◽  
2021 ◽  
Vol 6 (3) ◽  
pp. 133
Author(s):  
George C. Bourantas
Keyword(s):  
Magnetic Field ◽  
Blood Flow ◽  
Flow Model ◽  
Navier Stokes ◽  
Point Collocation ◽  
Electrical And Magnetic Properties ◽  
Proposed Model ◽  
Particle Strength ◽  
Derivatives Of

In this paper we numerically solve a flow model for the micropolar biomagnetic flow (blood flow) in a magnetic field. In the proposed model we account for both electrical and magnetic properties of the biofluid and we investigate the role of microrotation on the flow regime. The flow domain is in a channel with an unsymmetrical single stenosis, and in a channel with irregular multi-stenoses. The mathematical flow model consists of the Navier–Stokes (N–S) equations expressed in their velocity–vorticity (u–ω) variables including the energy and microrotation transport equation. The governing equations are solved by using the strong form meshless point collocation method. We compute the spatial derivatives of the unknown field functions using the discretization correction particle strength exchange (DC PSE) method. We demonstrate the accuracy of the proposed scheme by comparing the numerical results obtained with those computed using the finite element method.

Numerical simulation of undular jumps on graveled bed using volume of fluid method

2012 ◽  
Vol 66 (5) ◽  
pp. 909-917 ◽  
Author(s):  
Fatemeh Rostami ◽  
Saeed Reza Sabbagh Yazdi ◽  
Md Azlin Md Said ◽  
Mahdi Shahrokhi
Keyword(s):  
Free Surface ◽  
Open Channel ◽  
Flow Model ◽  
High Sensitivity ◽  
Navier Stokes ◽  
Stationary Waves ◽  
Hydraulic Jumps ◽  
Volume Of Fluid Method ◽  
Flow Equations ◽  
Proposed Model

Undular hydraulic jumps are characterized by a smooth rise of the free surface, followed by a train of stationary waves. These jumps sometimes occur in natural waterways and rivers. Numerical difficulties are especially distinct when the flow condition is close to the critical value because of the high sensitivity of the near-critical flow field to flow and channel conditions. Furthermore, the free surface has a wavy shape, which may indicate the occurrence of several transitions from supercritical to subcritical states and vice versa (i.e., undular hydraulic jumps). In this study, a flow model is used to predict an undular hydraulic jump in a rectangular open channel. The model is based on the general two-dimensional, Reynolds-averaged, Navier–Stokes flow equations. The resulting set of partial differential equations is solved using the FLOW-3D solver. The results are compared with the experimental data to validate the model. The comparative analysis shows that the proposed model yields good results. Several types of undular hydraulic jumps occurring in different situations are then simulated to prove the potential application of the model.

Magnetic field effect on a fractionalized blood flow model in the presence of magnetic particles and thermal radiations

2020 ◽  
Vol 131 ◽  
pp. 109540
Author(s):  
C.B. Tabi ◽  
P.A.Y. Ndjawa ◽  
T.G. Motsumi ◽  
C.D.K. Bansi ◽  
T.C. Kofané
Keyword(s):  
Magnetic Field ◽  
Blood Flow ◽  
Field Effect ◽  
Magnetic Particles ◽  
Flow Model ◽  
Magnetic Field Effect ◽  
Thermal Radiations ◽  
Blood Flow Model

scholarly journals Numerical Simulation of Nonlinear Pulsatile Newtonian Blood Flow through a Multiple Stenosed Artery

2015 ◽  
Vol 2015 ◽  
pp. 1-10 ◽  
Author(s):  
Satyasaran Changdar ◽  
Soumen De
Keyword(s):  
Blood Flow ◽  
Flow Model ◽  
Cylindrical Tube ◽  
Navier Stokes ◽  
Normal Functioning ◽  
Arterial Segment ◽  
Navier Stokes Equation ◽  
Stenosed Artery ◽  
Incompressible Newtonian Fluid ◽  
Flow Through

An appropriate nonlinear blood flow model under the influence of periodic body acceleration through a multiple stenosed artery is investigated with the help of finite difference method. The arterial segment is simulated by a cylindrical tube filled with a viscous incompressible Newtonian fluid described by the Navier-Stokes equation. The nonlinear equation is solved numerically with the proper boundary conditions and pressure gradient that arise from the normal functioning of the heart. Results are discussed in comparison with the existing models.

A micropolar-Newtonian blood flow model through a porous layered artery in the presence of a magnetic field

2019 ◽  
Vol 31 (7) ◽  
pp. 071901 ◽  
Author(s):  
Sneha Jaiswal ◽  
Pramod Kumar Yadav
Keyword(s):  
Magnetic Field ◽  
Blood Flow ◽  
Flow Model ◽  
Blood Flow Model

Numerical Simulation of Wind Effects on Breaking Solitary Waves by Navier-Stokes Equations

2009 ◽  
Author(s):  
Zhihua Xie ◽  
Xianyun Wen ◽  
Andrew N. Ross
Keyword(s):  
Solitary Waves ◽  
Wave Breaking ◽  
Flow Model ◽  
Stokes Equations ◽  
Navier Stokes ◽  
Wind Effects ◽  
Two Phase ◽  
Navier Stokes Equations ◽  
Proposed Model ◽  
The Waves

A two-phase flow model is addressed in this study to investigate effects of wind on breaking solitary waves, by solving the Reynolds-averaged Navier-Stokes (RANS) equations simultaneously for the flows both in the air and water, in which the free surface is calculated by the Volume-of-Fluid (VOF) method. First, the proposed model is validated with the experiment by Synolakis [1] of a breaking solitary wave without wind on a 1 : 19.85 impermeable beach. Then the wind effects are taken into account for modelling breaking solitary waves and it is found that the wind alters the air flow structure above the water wave; affects the wave breaking and runup process; increases the velocity in the water and causes the waves to break earlier, which agrees with previous laboratory experiment by Douglass [2].

Simultaneous effect of magnetic field and metallic nanoparticles on a micropolar fluid through an overlapping stenotic artery: Blood flow model

2016 ◽  
Vol 29 (2) ◽  
pp. 272-283 ◽  
Author(s):  
Khaled S. Mekheimer ◽  
Thanaa Elnaqeeb ◽  
M. A. El Kot ◽  
Felwah Alghamdi
Keyword(s):  
Magnetic Field ◽  
Blood Flow ◽  
Micropolar Fluid ◽  
Metallic Nanoparticles ◽  
Flow Model ◽  
Artery Blood Flow ◽  
Simultaneous Effect ◽  
Blood Flow Model

The Role of Microglia in Prevention of Hemorrhagic Transformation and Blood Flow Regulation after Ischemic Stroke

2014 ◽  
Vol 75 (S 02) ◽  
Author(s):  
M. Hugelshofer ◽  
A. Keller ◽  
M. Wurnig ◽  
L. Regli ◽  
A. Aguzzi
Keyword(s):  
Blood Flow ◽  
Ischemic Stroke ◽  
Flow Regulation ◽  
Hemorrhagic Transformation ◽  
Blood Flow Regulation

The role of the GSM-components of the geliospheric magnetic field in the formation of auroral power flux

2004 ◽  
Vol 10 (4) ◽  
pp. 66-73
Author(s):  
V.N. Reshetnyk ◽  
Keyword(s):  
Magnetic Field ◽  
Power Flux
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