Simulation of Biomagnetic Fluid Flow in a Lid-Driven Cavity Under Steady Localized Magnetic Field

Author(s):  
Sumanta Banerjee ◽  
Ranjan Ganguly
2017 ◽  
Vol 131-132 ◽  
pp. 451-458 ◽  
Author(s):  
Sadia Siddiqa ◽  
Naheed Begum ◽  
S. Safdar ◽  
M.A. Hossain ◽  
Abdullah A.A.A. Al-Rashed

2019 ◽  
Vol 473 ◽  
pp. 42-50 ◽  
Author(s):  
S. Morteza Mousavi ◽  
A. Ali Rabienataj Darzi ◽  
Omid ali Akbari ◽  
Davood Toghraie ◽  
Ali Marzban

Author(s):  
S. Morteza Mousavi ◽  
Mousa Farhadi ◽  
Kurosh Sedighi

In this paper, biomagnetic fluid flow in a three-dimensional channel in the presence of obstacles and under the influence of a magnetic field is studied numerically. The magnetic field is generated by a wire carrying electric current. The mathematical model of biomagnetic fluid dynamics which is consistent with the principles of ferrohydrodynamics and magnetohydrodynamics is used for the problem formulation. A computational grid which accurately covers the magnetic force is used for the discretisation of computational domain. The flow field is studied in the different arrangements of the obstacles and diverse magnetic field strengths. The results show that the flow pattern is drastically influenced by the applied magnetic field. Applying the magnetic field causes a secondary flow that affects the velocity distribution considerably. The magnetic force also reduces the maximum axial velocity. Furthermore, the magnetic field has a considerable impact on the recirculation zones behind the obstacles. The magnetic field makes the recirculation zones smaller. This study indicates that applying the magnetic field increases the axial drag coefficients of the obstacles significantly (in a case, by 40.15%).


2016 ◽  
Vol 40 (15-16) ◽  
pp. 7336-7348 ◽  
Author(s):  
S. Morteza Mousavi ◽  
Mousa Farhadi ◽  
Kurosh Sedighi

Author(s):  
Fatih Selimefendigil ◽  
Ali J. Chamkha

In this study, the problem of magnetohydrodynamics (MHD) mixed convection of lid-driven cavity with a triangular-wave shaped corrugated bottom wall filled with a non-Newtonian power-law fluid is numerically studied. The bottom corrugated wall of the cavity is heated and the top moving wall is kept at a constant lower temperature while the vertical walls of the enclosure are considered to be adiabatic. The governing equations are solved by the Galerkin weighted residual finite element formulation. The influence of the Richardson number (between 0.01 and 100), Hartmann number (between 0 and 50), inclination angle of the magnetic field (between 0 deg and 90 deg), and the power-law index (between 0.6 and 1.4) on the fluid flow and heat transfer characteristics are numerically investigated. It is observed that the effects of free convection are more pronounced for a shear-thinning fluid and the buoyancy force is weaker for the dilatant fluid flow compared to that of the Newtonian fluid. The averaged heat transfer decreases with increasing values of the Richardson number and enhancement is more effective for a shear-thickening fluid. At the highest value of the Hartmann number, the averaged heat transfer is the lowest for a pseudoplastic fluid. As the inclination angle of the magnetic field increases, the averaged Nusselt number generally enhances.


CFD letters ◽  
2020 ◽  
Vol 12 (4) ◽  
pp. 43-53
Author(s):  
Normazni Abdullah ◽  
Zuhaila Ismail ◽  
Adrian Syah Halifi ◽  
Alia Rafiza Che Ayob ◽  
Erwan Hafizi Kasiman ◽  
...  

2008 ◽  
Vol 86 (3) ◽  
pp. 447-457 ◽  
Author(s):  
N G Kafoussias ◽  
E E Tzirtzilakis ◽  
A Raptis

The problem of the two-dimensional steady and laminar free-forced convective boundary-layer flow of a biomagnetic fluid over a semi-infinite vertical plate, under the action of a localized magnetic field, is numerically studied. The dynamic viscosity of the biomagnetic fluid as well as its thermal conductivity is considered to be temperature-dependent whereas the magnetization of the fluid varies linearly with the magnetic field strength. The numerical solution of the coupled and nonlinear system of partial differential equations (resulting after the introduction of appropriate nondimensional variables) with boundary conditions describing the problem under consideration, is obtained by an efficient numerical technique based on the common finite difference method. Numerical calculations were carried out for the case of blood (Pr = 21) for different values of the dimensionless parameters entering into the problem, especially for the magnetic parameter Mn and the viscosity–temperature parameter Θr. The analysis of the obtained results, presented in figures, shows that the flow field is influenced by the application of the magnetic field, which could be interesting for medical and bioengineering applications. PACS Nos.: 44.20.+b, 44.25.+f, 44.27.+g, 47.15.Cb, 47.65.Cb, 47.63.–b, 47.90.+a


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