A direct BEM solution to MHD flow in electrodynamically coupled rectangular channels

2012-08-15
Magnetohydrodynamic flows in coupled rectangular channels are numerically investigated under an external, horizontally applied magnetic field. The flows are driven by constant pressure gradients in the channels, which are separated with a thin partly insulating and partly conducting barrier. A direct boundary element formulation is utilized to solve these two-dimensional steady, convection-diffusion type coupled partial differential equations in terms of velocity and induced magnetic fields. The resulting system of linear equations is solved by reordering the unknown vector due to the insertion of the coupled boundary conditions along the conducting partition of the barrier. This study aims to examine the consequence of high values of Hartmann number on the velocity and induced magnetic fields. Further, the alteration in flow behavior due to the variations in the length of the conducting partition along the thin barrier and in the value of ratio of the pressure gradients of two channels is also analyzed.
COMPUTERS & FLUIDS

Suggestions

A DRBEM solution for MHD pipe flow in a conducting medium
Han Aydın, S.; Tezer, Münevver (Elsevier BV, 2014-3)
Numerical solutions are given for magnetohydrodynamic (MHD) pipe flow under the influence of a transverse magnetic field when the outside medium is also electrically conducting. Convection-diffusion-type MHD equations for inside the pipe are coupled with the Laplace equation defined in the exterior region, and the continuity requirements for the induced magnetic fields are also coupled on the pipe wall. The most general problem of a conducting pipe wall with thickness, which also has magnetic induction gene...
BEM solution of MHD flow in a pipe coupled with magnetic induction of exterior region
Tezer, Münevver (2013-05-01)
In this paper, numerical solutions are presented for the MHD flow in a pipe surrounded by an electrically conducting medium, and under the influence of a transverse magnetic field. The boundary element method is used which discretizes only the pipe wall and is suitable for the infinite exterior region. Coupled MHD equations for the velocity and induced magnetic field inside the pipe, and the induced magnetic field equation for the outside medium are solved simultaneously taking into account also coupled bou...
A numerical solution of the steady MHD flow through infinite strips with BEM
Bozkaya, Canan; Tezer, Münevver (2012-04-01)
The magnetohydrodynamic (MHD) flow of an incompressible, viscous, electrically conducting fluid in infinite channels in the presence of a magnetic field is investigated. The fluid is driven either by a pressure gradient or by the currents produced by electrodes placed parallel in the middle of the walls. The applied magnetic field is perpendicular to the infinite walls which are combined from conducting and insulated parts. A boundary element method (BEM) solution has been obtained by using a fundamental so...
Free-Space Fundamental Solution of a 2D Steady Slow Viscous MHD Flow
Sellier, A.; AYDIN, SELÇUK HAN; Tezer, Münevver (2014-12-01)
The fundamental free-space 2D steady creeping MHD flow produced by a concentrated point force of strength g located at a so-called source point x(0) in an unbounded conducting Newtonian liquid with uniform viscosity mu and conductivity sigma > 0 subject to a prescribed uniform ambient magnetic field B = Be-1 is analytically obtained. More precisely, not only the produced flow pressure p and velocity u but also the resulting stress tensor field sigma are expressed at any observation point x not equal x(0) in...
A Bayesian approach to inclusion and performance analysis of using extra information in bioelectric inverse problems
Serinağaoğlu Doğrusöz, Yeşim; Macleod, Robert S. (The Institute of Electrical and Electronics Engineers Signa Processing Society (IEEE); 2003-12-16)
Due to attenuation and spatial smoothing that occurs in the conducting media, the bioelectric inverse problem of estimating sources from remote measurements is ill-posed and solution requires regularization. Recent studies showed that employing Bayesian methods could help increase accuracy. The basic limitations are the availability of good a priori information about the solution, and the lack of a "good" error metric. In this paper, we employ Bayesian methods, and present the mathematical framework for inc...
Citation Formats
C. Bozkaya and M. Tezer, “A direct BEM solution to MHD flow in electrodynamically coupled rectangular channels,” COMPUTERS & FLUIDS, pp. 177–182, 2012, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/42028.