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Topic: MHD

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	MHD generator - Wikipedia, the free encyclopedia
		The MHD dynamo is an active area of research in plasma physics and is of great interest to the geophysics and astrophysics communities.
		From their perspective the earth is a global MHD dynamo and with the aid of the particles on the solar wind produces the aurora borealis.
		MHD generators typically reduce the temperature of the conductive substance from plasma temperatures to just over 1000 °C. A second example, which applies to the earth, the differently charged electromagnetic layers produced by the dynamo effect on the earth's geomagnetic field enable the appearance of the aurora borealis.
	en.wikipedia.org /wiki/MHD_generator (891 words)

	MHD Magnetic Scale Control: Water,Fluid Treatment MHD Systems: Prevent and Remove Scale: Magenetohydrodynamic Treatment
		The higher conductivity of the liquid (that is the higher the mineralization hence the hardness), the higher the MHD effect.
		The MHD units are conceived with a venturi effect in the magnetic gap to increase the velocity of the fluid.
		The MHD units high efficiency is underscored by the choice of engineers at Amoco’s largest refinery who ran a conclusive test on cooling towers treated with a MHD unit.
	www.mhdsystems.com /mhdsystems/explanation.htm (1162 words)

	CHEMTRAILS - CONTRAILS (Site not responding. Last check: 2007-10-29)
		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).
		A particular advantage for MHD generators is that they can be made to generate large amounts of power with a small volume, light weight device.
	www.carnicom.com /magnet1.htm (300 words)

	Magnetohydrodynamics-MHD Sensor Theory
		Magnetohydrodynamic (MHD) sensors are challenging linear accelerometers in applications requiring the measurement of angular rate and angular acceleration.
		As shown in Figure 1, an angular motion about the sensitive axis of the sensor results in a relative velocity difference between the fluid proof mass, which is highly conductive, and the normally applied static magnetic field, which moves with the sensor case.
		MHD SENSOR accuracy is a function of increasingly larger size in either the transformer or non-transformer designs.
	www.aptec.com /ATAWeb/application_notes_magnetohydrodynamics_mhd_sensor_theory.htm (541 words)

	Advanced Energy Technology Program - MHD Studies
		Practical MHD devices have been in use since the early part of the 20th century; for example, electromagnetic pumping of liquid metals was first described in 1937 by Julian Hartmann [1].
		Gas-phase MHD is best known in MHD power generation, where, since 1959 [3,4], major efforts have been carried out around the world to develop this technology in order to improve electric conversion efficiency, increase reliability by eliminating moving parts, and reduce emissions from coal and gas plants.
		MHD studies in the Energy Technology program at UC San Diego are concentrated on solving energy recovery problems for magnetic fusion reactors and on advanced energy conversion systems.
	www-ferp.ucsd.edu /THERMAL/mhd.shtml (452 words)

	Scientific Visualization - Toroidal MHD
		MHD (Magneto-Hydrodynamics) models are extensively used in the analysis of magnetic fusion devices, industrial processing plasmas, and ionospheric/astrophysical plasmas.
		MHD is the extension of fluid dynamics to ionized gases, including the effects of electric and magnetic fields.
		Time-independent MHD equilibria also form the basis for more advanced kinetic and particle-based models of plasma behavior.
	www.ornl.gov /fed/mhd/mhd.html (171 words)

	MHD
		Magnetohydrodynamics (MHD) is the fluid dynamics of conducting fluid or plasma, coupled with Maxwell's equations.
		The MHD approximation is that the electric field vanishes in the moving fluid frame, except for possible resistive effects.
		MHD is described by higher order system of partial differential equations than fluid dynamics.
	www.math.nyu.edu /mfdd/strauss/fem7pl/node2.html (500 words)

	Document sans-titre
		MHD is a very large field of investigation.
		In gas experiments, such "MHD aerodyne" would be surrounded by a luminous plasma, reddish at low regime, almost white at larger ones.
		Depends on the intensity of the magnetic field, of course (the MHD interaction parameter must be strong enough).
	www.jp-petit.com /science/mhd/m_mhd_e/m_mhd_e.htm (1929 words)

	Hank Strauss Home Page.
		MHD Effects on Pellet Injection in Tokamaks by H. Strauss and W. Park.
		Nonlinear MHD in the Dag Confinement Configuration by H. Strauss and D. Weil.
		Nonlinear MHD Halo Current Simulations (pdf) by H. Strauss et al.
	www.math.nyu.edu /mfdd/strauss (268 words)

	Global MHD Simulations of the Magnetosphere
		The dynamics of the magnetosphere in full three dimensions is carried out using a magnetohydrodynamic (MHD) model, a state of the art global scale code that utilizes the computing power of modern supercomputers.
		Recent results from this code have shown that the terrestrial magnetosphere acts like a lens that focuses the fluctuations in the solar wind to a region behind the earth where the major geomagnetic activities originate.
		MHD Simulation of the March 9, 1995 Substorms
	www.spp.astro.umd.edu /Research/Mhd/mhd.htm (159 words)

	Chimbis : mhd
		mhd is based on PHP Helpdesk - a helpdesk application originally written in PHP by Joseph Hoot.
		It would be great if you enjoy using mhd and could submit patches to me for this development version.
		So what is now mhd might be a low-end helpdesk and the new IRM/mhd a higher end helpdesk.
	mhd.sourceforge.net (826 words)

	Stable Confinement of High-Pressure Plasmas
		Research supported by the Office of Science led to the development and verification of magnetohydrodynamic (MHD) stability theory, which predicts plasma instabilities that limit the stable operating range of devices that confine plasmas using magnetic fields.
		MHD instabilities can affect magnetic field configurations and cause rapid losses of plasma energy and particles.
		Experiments to verify the quantitative predictions spanned two decades because they required the development of new techniques to form and control complex plasma shapes, high-power heating sources to increase plasma pressure, and novel diagnostics for measuring the spatial distributions of plasma pressure and current.
	www.er.doe.gov /sub/accomplishments/decades_discovery/57-pf.html (336 words)

	Mental Health Division Quality Strategy Plan - DSHS/MHD (Site not responding. Last check: 2007-10-29)
		MHD is part of a Disease Management project with Medical Assistance Administration (MAA) and is monitoring the collaborative efforts regarding the management of these high risk, co-morbid conditions as documented in the client's mental health record.
		MHD believes it is important for consumers to be seen quickly at each stage of treatment, and for care continuity to be coordinated when the consumer transitions between care or service settings.
		MHD has recently developed Access to Care standards which clearly defines who is seen for care;the access standards for timeliness have been incorporated into the contract.
	www1.dshs.wa.gov /mentalhealth/quality.shtml (7953 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)

	2 Properties of MHD Modes of Plasma Structures
		In MHD, wave and oscillatory phenomena have spatial and temporal scales much longer than the ion gyroradii and gyroperiods, respectively, the conditions which are satisfied well by the coronal observational constrains.
		The characteristic speeds of the MHD phenomena are associated with plasma compressibility and elasticity connected with the frozen-in magnetic field of strength
		Properties of MHD waves strongly depend upon the angle between the wave vector and the magnetic field, consequently, MHD waves are highly affected by plasma structuring and filamentation.
	solarphysics.livingreviews.org /Articles/lrsp-2005-3/articlese2.html (252 words)

	Mountain Horned Dragon (Acanthosaura species)
		Initially the new MHD can be expected to spend most of it's time sitting and will probably run and hide when you approach, but once the MHD is acclimated it should prove to be a docile lizard that is easy to handle.
		I wouldn't make it a habit to "wear" your MHD out when you go places as this is too stressful, but once they are used to being handled they will sit on your shoulder for long periods without moving.
		It is not uncommon for MHDs to be imported gravid so it is important to make sure your MHD is getting adequate calcium from the beginning.
	www.kingsnake.com /mhd/MHDkingsnake.html (4379 words)

	MHD-Online
		The XVth International Conference on MHD Energy Conversion and the VIth Workshop on Magnetoplasma Aerodynamics for Aerospace Applications will be held in Moscow, Russia, May 24-27, 2005.
		The objective of the XVth ICMHD and VIth Workshop is to provide a forum for presentation and discussion of recent progress in worldwide MHD science and technology as related to energy conversion and magnetoplasma aerodynamics for aerospace applications.
		Other related MHD and plasma subjects relevant to the meeting forum would also be considered for inclusion into the program.
	mhdonline.sal.lv /index.php?goto=conf&jid=36 (185 words)

	Powder-liquid mixer MHD for powder incorporation and powder induction by IKA
		The MHD accurately combines the solid and liquid, and disperses them into a homogeneous, final product.
		The MHD has a unique, patented design that doesn’t require suction to draw in the powders, which essentially eliminates aeration.
		The core of a continuous liquid-solid-mixing plant: the MHD (Mixing-Homogenizing-Dispersing).
	www.ikausa.com /mhd.htm (244 words)

	MHD Stability and Disruptions (Site not responding. Last check: 2007-10-29)
		In either case, the corresponding MHD stability limit on attainable plasma pressure — usually measured in terms of beta, the ratio of plasma pressure to toroidal magnetic field pressure — determines the toroidal magnetic field strength and physical size of the ITER device.
		Realization of adequate MHD stability and careful tailoring and control of the plasma operation to avoid undue occurrence of disruption (disruption avoidance) will be critical ITER operation issues.
		Present understanding of MHD stability is already adequate to accurately calculate the ideal (infinite plasma conductivity) stability characteristics and the corresponding ideal MHD beta limit in ITER plasmas.
	fusion.gat.com /iter-ga/mhd_stability.html (200 words)

	MHD(Magneto-HydroDynamics (Site not responding. Last check: 2007-10-29)
		One of the most popular application of MHD is electricity generator.
		Since there's no mechanical friction whatsoever, this MHD generator has very high efficiency.
		MHD engine requires no shaft, nor propeller, it reduced mechanical noise dramatically.
	www.psc.edu /~jlim/ResearchDoc/mhd.html (272 words)

	Codes for MHD Simulation
		Last week, we took a first look at magnetohydrodynamics, or MHD, and briefly touched on a few of the applications for which MHD simulation might be employed.
		This time around, we're going to look at some of the MHD simulation codes available to researchers before we jump in and look at the problems being approached with MHD in by today's computational scientists.
		A good place to go to start learning about MHD codes (or acquiring a copy for use, if you're so inclined) is the Zeus homepage at the University of Illinois' National Center for Supercomputing Applications (NCSA) in Urbana-Champaign, IL.
	www.suite101.com /article.cfm/scientific_computing/69951 (354 words)

	Nonlinear MHD and Extended-MHD Workshop
		Analysis of physics mechanisms of the MHD perturbations for control of the plasma stability in tokamaks.
		Nonlinear MHD simulations can reproduce many qualitative phenomena observed in experiments; for example, disruptions, resistive interchange modes, double tearing sawteeth, locked modes, etc. These simulations provide valuable insights and understandings of these phenomena in present and future experiments.
		As for numerical techniques, unstructured mesh MHD code results were presented, and a structured/unstructured hybrid mesh scheme was proposed.
	w3.pppl.gov /~wpark/mw.html (922 words)

	MHD Conference
		Aim of this conference is to summarize new results in traditional fields of fundamental and applied magnetohydrodynamics (MHD) as well as to introduce new ideas and topics.
		By regrouping these two conferences in a single one the organisers hope to bring together different MHD generations in vital and rapidly developing crossroads between the East and the West to promote new discoveries and to take new challenges.
		The organizers expect also to favour the relation between research and industry and by this way to identify new industrial interests for MHD research and development activities.
	www.sal.lv /pamir (239 words)

	Time-Dependent Simulation of Synchrotron Emission and Electron Shock Acceleration in Radio Galaxies
		The combination of our cosmic ray transport scheme with multidimensional MHD simulations of radio jets makes it possible for us to investigate a wide variety of issues pertaining to these fascinating objects.
		In addition to basic morphological questions, we are studying the complicated role of radiative ageing to gain insights into how ageing arguments may or may not be applied to actual sources.
		We present the first three-dimensional MHD radio galaxy simulations that explicitly model transport of relativistic electrons, including diffusive acceleration at shocks as well as radiative and adiabatic cooling in smooth flows.
	www.msi.umn.edu /Projects/twj/radjet/radjet.html (1406 words)

	Active Control of MHD Stability 2005 (Site not responding. Last check: 2007-10-29)
		The 10th Active Control of MHD Stability Workshop was held Oct.31-Nov.2 at The Pyle Center on the University of Wisconsin-Madison campus.
		The theme emphasized progress in the control of kink and tearing stability, but as in past years, other topics related to MHD control were covered.
		The 11th Active Control of MHD Stability Workshop will be held Nov.6 - Nov.8, 2006 at Columbia University.
	plasma.physics.wisc.edu /MHD05 (269 words)

	MHD Generating system (US4200815) (Site not responding. Last check: 2007-10-29)
		In operation, the gas and liquid are combined in a mixer and the resulting two-phase mixture enters the MHD generator.
		The MHD generator acts as a turbine and electric generator in one unit wherein the gas expands, drives the liquid across the magnetic field and thus generates electrical power.
		The gas and liquid are separated, and the available energy in the gas is recovered before the gas is exhausted to the atmosphere.
	www.delphion.com /details?pn10=US04200815 (241 words)

	HighBeam Encyclopedia - MHD (Site not responding. Last check: 2007-10-29)
		Vail Mountain's Eagle's Nest to Be Official 2006 Studio Headquarters for 'MHD', MTV Networks Music Group's HDTV Music Channel Launching January 2006.
		Music to Their Eyes.(management of MTV Networks Inc.'s newly launched channel MHD)
		Powder-liquid mixing system of the future: IKA[R] MHD 2000.
	www.encyclopedia.com /html/X/X-MHD.asp (137 words)

	Amazon.com: MHD (Site not responding. Last check: 2007-10-29)
		Liquid-Metal Flows and Magnetohydrodynamics: The Third International Seminar in the Mhd Flows and Turbulence Series (Progress in Astronautics and Aeronautics) by Beer-Sheva International Seminar on Magnetohydrodynamic Flows and Turbulence (3rd : 1981 : Ben-Gurion University of the Negev), P. Lykoudis, A. Yakhot, and American Institute of Aeronautics and Astronautics (Hardcover - Nov 1983)
		Open-cycle MHD power generation;: Results of research carried out by members of the British MHD Collaborative Committee by British MHD Collaborative Committee (Unknown Binding - 1969)
		Heat and Mass Transfer in Mhd Flows (Studies in Theoretical and Applied Mechanics, Vol 3) by E. Blums, Yu.
	www.amazon.com /s?ie=UTF8&search-alias=aps&keywords=MHD&page=1 (438 words)

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