Deformation of ferrofluid sheets due an applied magnetic field transverse to jet flow

2004 ◽  
Vol 7 (3) ◽  
pp. 175-175 ◽  
Author(s):  
T. Franklin ◽  
C. Rinaldi ◽  
J. W. M. Bush ◽  
M. Zahn
Keyword(s):  
Magnetic Field ◽  
Applied Magnetic Field ◽  
Jet Flow ◽  
Magnetic Field Transverse

A study of a conductive laminar jet flow in an applied magnetic field

SIMULATION ◽  
2019 ◽  
Vol 95 (10) ◽  
pp. 995-1011
Author(s):  
Cheng-Hsing Hsu ◽  
Te-Hui Tsai ◽  
Ching-Chuan Chang ◽  
Yi Chen
Keyword(s):  
Magnetic Field ◽  
Reynolds Number ◽  
Flow Field ◽  
Applied Magnetic Field ◽  
Recirculation Zone ◽  
Hartmann Number ◽  
Control Volume ◽  
Jet Flow ◽  
Channel Width ◽  
Laminar Jet

This study investigates steady two-dimensional laminar confined jet flow in the presence of an applied magnetic field. The magnetohydrodynamic equations with the format of the stream function and vorticity formulation of the fluid flow are solved numerically. A numerical method was developed by using a first-order upwind scheme at the boundaries and a second-order finite control volume scheme in the flow field. The results show that the expansion region of the jet is moving downstream while the channel width and the Reynolds number are increasing. The vortex and the recirculation zone are stretched with increased Hartmann number, and the jet expansion region is moving upstream while the vortex and the recirculation zone are reduced. The channel width and the Reynolds number for the jet development are positive efforts and the Hartmann number has a suppressed effect in the present confined jet flow field.

61Ni MÖSSBAUER EFFECT STUDIES OF THE FERRIMAGNETIC SPINEL NiCr2O4 IN AN APPLIED MAGNETIC FIELD

1980 ◽  
Vol 41 (C1) ◽  
pp. C1-185-C1-186 ◽  
Author(s):  
P. Gütlich ◽  
H. Rummel ◽  
H. Spiering
Keyword(s):  
Magnetic Field ◽  
Applied Magnetic Field ◽  
Mössbauer Effect ◽  
Mossbauer Effect

SPECIFIC HEAT AND THERMAL CONDUCTIVITY OF TmVO4 AND DyVO4 WITH AN APPLIED MAGNETIC FIELD

1981 ◽  
Vol 42 (C6) ◽  
pp. C6-277-C6-279 ◽  
Author(s):  
B. Daudin ◽  
B. Salce ◽  
S. H. Smith
Keyword(s):  
Magnetic Field ◽  
Thermal Conductivity ◽  
Specific Heat ◽  
Applied Magnetic Field

scholarly journals Generation of Reverse Meniscus Flow by Applying An Electromagnetic Brake

2021 ◽  
Author(s):  
Alexander Vakhrushev ◽  
Abdellah Kharicha ◽  
Ebrahim Karimi-Sibaki ◽  
Menghuai Wu ◽  
Andreas Ludwig ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Lorentz Force ◽  
Applied Magnetic Field ◽  
Numerical Study ◽  
Flow Direction ◽  
Experimental Studies ◽  
Submerged Entry Nozzle ◽  
Mean Flow ◽  
Slab Caster ◽  
The Mean

AbstractA numerical study is presented that deals with the flow in the mold of a continuous slab caster under the influence of a DC magnetic field (electromagnetic brakes (EMBrs)). The arrangement and geometry investigated here is based on a series of previous experimental studies carried out at the mini-LIMMCAST facility at the Helmholtz-Zentrum Dresden-Rossendorf (HZDR). The magnetic field models a ruler-type EMBr and is installed in the region of the ports of the submerged entry nozzle (SEN). The current article considers magnet field strengths up to 441 mT, corresponding to a Hartmann number of about 600, and takes the electrical conductivity of the solidified shell into account. The numerical model of the turbulent flow under the applied magnetic field is implemented using the open-source CFD package OpenFOAM®. Our numerical results reveal that a growing magnitude of the applied magnetic field may cause a reversal of the flow direction at the meniscus surface, which is related the formation of a “multiroll” flow pattern in the mold. This phenomenon can be explained as a classical magnetohydrodynamics (MHD) effect: (1) the closure of the induced electric current results not primarily in a braking Lorentz force inside the jet but in an acceleration in regions of previously weak velocities, which initiates the formation of an opposite vortex (OV) close to the mean jet; (2) this vortex develops in size at the expense of the main vortex until it reaches the meniscus surface, where it becomes clearly visible. We also show that an acceleration of the meniscus flow must be expected when the applied magnetic field is smaller than a critical value. This acceleration is due to the transfer of kinetic energy from smaller turbulent structures into the mean flow. A further increase in the EMBr intensity leads to the expected damping of the mean flow and, consequently, to a reduction in the size of the upper roll. These investigations show that the Lorentz force cannot be reduced to a simple damping effect; depending on the field strength, its action is found to be topologically complex.

scholarly journals Stability of nonaxisymmetric ferrofluid flow in rotating cylinders with magnetic field

2005 ◽  
Vol 2005 (23) ◽  
pp. 3727-3737 ◽  
Author(s):  
Jitender Singh ◽  
Renu Bajaj
Keyword(s):  
Magnetic Field ◽  
Applied Magnetic Field ◽  
Critical Value ◽  
Annular Space ◽  
Rotating Cylinders ◽  
The Stability

Effect of an axially applied magnetic field on the stability of a ferrofluid flow in an annular space between two coaxially rotating cylinders with nonaxisymmetric disturbances has been investigated numerically. The critical value of the ratioΩ∗of angular speeds of the two cylinders, at the onset of the first nonaxisymmetric mode of disturbance, has been observed to be affected by the applied magnetic field.

scholarly journals Phase boundary dynamics of bubble flow in a thick liquid metal layer under an applied magnetic field

2020 ◽  
Vol 5 (6) ◽  
Author(s):  
Mihails Birjukovs ◽  
Valters Dzelme ◽  
Andris Jakovics ◽  
Knud Thomsen ◽  
Pavel Trtik
Keyword(s):  
Magnetic Field ◽  
Liquid Metal ◽  
Phase Boundary ◽  
Applied Magnetic Field ◽  
Metal Layer ◽  
Bubble Flow ◽  
Boundary Dynamics

Enhanced dielectric response under applied magnetic field in 0–3 particulate composites of (1−x)PbZr0.95Ti0.05O3-(x)Ni0.7Zn0.3Fe2O4

2021 ◽  
Vol 127 (8) ◽  
Author(s):  
Rahul Goel ◽  
Manoj Kumar ◽  
Shobhna Dhiman ◽  
Arun Kumar Singh ◽  
Sanjeev Kumar
Keyword(s):  
Magnetic Field ◽  
Applied Magnetic Field ◽  
Dielectric Response ◽  
Particulate Composites
Sign in / Sign up

Export Citation Format

Share Document