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Topic: Magnetohydrodynamics


In the News (Sat 12 Dec 09)

  
  Magnetohydrodynamics - Wikipedia, the free encyclopedia
Magnetohydrodynamics (MHD) (magnetofluiddynamics or hydromagnetics) is the academic discipline which studies the dynamics of electrically conducting fluids.
The word magnetohydrodynamics (MHD) is derived from magneto- meaning magnetic field, and hydro- meaning liquid, and -dynamics meaning movement.
The fluid core of the Earth and other planets is theorized to be a huge MHD dynamo that generates the Earth's magnetic field due to the motion of the molten rock.
en.wikipedia.org /wiki/Magnetohydrodynamics   (2135 words)

  
 CHEMTRAILS - CONTRAILS
MHD is important in the study of controlled thermonuclear reactions in which the conducting fluid is a plasma confined by a magnetic field.
In the open-cycle MHD generator a fossil fuel, burnt in oxygen or preheated compressed air, is seeded with an element of low ionization potential (such as potassium or cesium).
This is MHD power, the magnetohydrodynamic interaction between a plasma and a magnetic field.
www.carnicom.com /magnet1.htm   (300 words)

  
 Outline of Biological Magnetohydrodynamics
Returning to low-frequency biological rhythms of presumably magnetohydrodynamic nature, it must be added that probably the most suitable subject for future research on this situation is the nervous system and the autonomous motions of the myocardium, of the aortic walls, as well as the peristalsis of the intestines and of the esophagus.
Magnetohydrodynamics has been relatively well developed for the diffuse state of inter-stellar matter and of the ionosphere, and much less so for laboratory plasma.
It is true that the application of magnetohydrodynamics to biological systems proceeds by analogy, but one which is justified by the plasmic properties of protein semiconductors, bioluminscence, paramagnetic resonance in proteins and entire tissues, biological rhythm, the sensitivity of organisms to magnetic fields, and the pulsation of biopotentials.
www.bioelektronika.com /sedlak1971.htm   (5365 words)

  
 Magnetohydrodynamics Summary
Magnetohydrodynamics (MHD) is a promising technology for electric bulk power generation.
The word magnetohydrodynamics (MHD) is derived from magneto- meaning magnetic field, and hydro- meaning fluid, and -dynamics meaning movement.
In early 1990s, Mitsubishi built a boat, the 'Yamoto', which uses a magnetohydrodynamic drive, is driven by a liquid helium-cooled superconductor, and can travel at 15 km/h.
www.bookrags.com /Magnetohydrodynamics   (3133 words)

  
 MHD Magnetic Scale Control: Water,Fluid Treatment MHD Systems: Prevent and Remove Scale: Magenetohydrodynamic Treatment
This quotation outlines the basic elements that are important to the reaction known as magnetohydrodynamics (MHD) reactions.
Should the velocity change, to a flow not fast enough to keep moving, it will settle out in sump areas, traps, blowdowns, etc. If this is the case, physically flushing or cleaning of sumps or traps will be required.
Magnetohydrodynamics (MHD) a well established science was first demonstrated by Faraday in his famous 1839 "London Bridge" experiment.
www.mhdsystems.com /mhdsystems/explanation.htm   (1162 words)

  
 Magnetohydrodynamics (MHD)
Magnetohydrodynamics involves magnetic fields (magneto) and fluids (hydro) that conduct electricity and interact (dynamics).
MHD technology is based on a fundamental law of electromagnetism: When a magnetic field and an electric current intersect in a liquid, their repulsive intersection propels the liquid in a direction perpendicular to both the field and the current.
The ten inch diameter tubes are individually wrapped in saddle shaped superconducting magnetic coils made of niobium titanium alloy filaments packed into wires with copper cores and shells.
www.skewsme.com /mhd.html   (327 words)

  
 magnetohydrodynamics - HighBeam Encyclopedia
magnetohydrodynamics, study of the motions of electrically conducting fluids and their interactions with magnetic fields.
The principles of magnetohydrodynamics are of particular importance in plasma physics.
Find newspaper and magazine articles plus images and maps related to "magnetohydrodynamics" at HighBeam.
www.encyclopedia.com /doc/1E1-magnetoh.html   (135 words)

  
 Magnetohydrodynamics   (Site not responding. Last check: 2007-10-20)
Paul Schmidt and I have been doing research in magnetohydrodynamics, we have a non-technical abstract and a somewhat technical abstract of our research which is being supported by a grant from the NSF.
Recently we were invited to organize a minisymposium on magnetohydrodynamics at the 1998 SIAM Annual Meeting to be held during the week of July 13--17 in Toronto, Canada.
In the past we were invited to organize a special session on magnetohydrodynamics at the Second World Congress of Nonlinear Analysts held in Greece 1996.
www.auburn.edu /~ajm/mhd/mhd.html   (208 words)

  
 Three-Dimensional Magnetohydrodynamics Studies of Tokamak Fueling   (Site not responding. Last check: 2007-10-20)
We use the MH3D code, which is a very flexible code system for solving the magnetohydrodynamics (MHD) equations in three space dimensions and time.
Existing code options allow several representations of a plasma, ranging from a conducting fluid to a collection of interacting charged particles with long mean-free-paths.
Strauss and W. Park, "Magnetohydrodynamic effects on pellet injection in tokamaks," Phys.
www.nersc.gov /news/annual_reports/annrep98/strauss.html   (317 words)

  
 Magnetohydrodynamics
Magnetohydrodynamics, or MHD, is a branch of the science of the dynamics of matter moving in an electromagnetic field, especially where currents established in the matter by induction modify the field, so that the field and dynamics equations are coupled.
It is now easy to find the x-component of the magnetic field and see how the lines of force are dragged by the flow, and to find the pressure gradient in the z-direction that adds to the magnetic pressure.
There is an interesting variety of magnetohydrodynamic waves, but the subject is one of complexity, so I will only try to give a good idea of the types of magnetohydrodynamic waves in the simplest cases, leaving all the complexity of finite conductivity, fluid viscosity and other factor aside.
www.du.edu /~jcalvert/phys/mhd.htm   (7986 words)

  
 Magnetohydrodynamics, Hydrodynamic and numerical modeling of a spherical homogeneous dynamo experiment   (Site not responding. Last check: 2007-10-20)
Magnetohydrodynamics, Hydrodynamic and numerical modeling of a spherical homogeneous dynamo experiment
The mean flows studied are predicted to lead to self-excitation of magnetic eigenmodes.
Magnetohydrodynamics 38, No. 1/2, 107-120, 2002 [PDF, 1.02 Mb]
mhd.sal.lv /contents/2002/1/MG.38.1.9.R.html   (149 words)

  
 Fluids and Magnetohydrodynamics Research at Exeter   (Site not responding. Last check: 2007-10-20)
However, you will have a better browsing experience if you upgrade to a modern browser.
Magnetic fields strongly influence astrophysical fluid dynamics, and provide another research field, magnetohydrodynamics (MHD).
The magnetic fields in the Sun, and many planets, are generated by fluid flows; an outstanding problem is to develop models which explain how these magnetic fields are created.
secamlocal.ex.ac.uk /research/groups/appmat/mhd/topics.html   (217 words)

  
 IngentaConnect Smoothed Particle Magnetohydrodynamics III. Multidimensional test...   (Site not responding. Last check: 2007-10-20)
In two previous papers (Papers I and II), we have described an algorithm for solving the equations of Magnetohydrodynamics (MHD) using the Smoothed Particle Hydrodynamics (SPH) method.
A particular finding of these tests is that in Smoothed Particle Magnetohydrodynamics (SPMHD), the magnitude of the divergence error is dependent on the number of neighbours used to calculate a particle's properties and only weakly dependent on the total number of particles.
Whilst many improvements could still be made to the algorithm, our results suggest that the method is ripe for application to problems of current theoretical interest, such as that of star formation.
www.ingentaconnect.com /content/bsc/mnr/2005/00000364/00000002/art00003   (328 words)

  
 Fluid Dynamics & Magnetohydrodynamics
This is the realm of hydrodynamic stability theory and is a common thread to much of the fluids research in the Department, with applications in many diverse areas.
The addition of a magnetic field gives the subject of magnetohydrodynamics or MHD for short.
It has applications in industrial processes and controlled thermonuclear fusion, but the main emphasis in the Department is the complex interaction between electrically conducting fluids and magnetic fields that is responsible for the generation of planetary and stellar magnetic fields.
www.maths.gla.ac.uk /research/groups/fluids-mhd   (344 words)

  
 Center for Simulation of RF Wave Interactions with Magnetohydrodynamics — CSWIM
Center for Simulation of RF Wave Interactions with Magnetohydrodynamics
CSWIM (Center for Simulation of RF Wave Interactions with Magnetohydrodynamics) is a DoE SciDAC project charged with integrating disparate physics codes together for higher fidelity simulation of magnetically confined plasma.
If you have not already done so, you will also need to sign the site's Acceptable Use Policy and fax it to David Bernholdt at 865 576 5491.
www.cswim.org   (111 words)

  
 Research Group on Magnetohydrodynamics (MHD)
Rohde, FV-Schemes for a Scalar Model Problem of Radiation Magnetohydrodynamics.
Submitted to the proceedings of the GAMM2002 conference.
Wesenberg, A New Approach to Divergence Cleaning in Magnetohydrodynamic Simulations.
www.mathematik.uni-freiburg.de /IAM/Research/projectskr/mhd/mhd.html   (506 words)

  
 MagnetoHydroDynamics
Magnetohydrodynamics is the study of fluid motion in the presence of electromagnetic fields.
The MHD / Plasma Dynamics Team at HyPerComp are experts in this field.
Higher order schemes using Discontinuous Galerkin techniques in MHD
www.hypercomp.net /Technologies/MHD/mhd_low.html   (229 words)

  
 Magnetohydrodynamics   (Site not responding. Last check: 2007-10-20)
Magnetic fields play an integral role in astrophysics
No introduction to the physics of fluids would be complete without mention of the magnetohydrodynamic (MHD) approximation.
The fluid approximation involves the assumption that the mean free path of particles is much less than any other physical scales.
grus.berkeley.edu /~jrg/ay202/node24.html   (218 words)

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