Liquid metal mhd pumping, flow measurement, and iron solute control for. Magnetohydrodynamics basics or mhd in one lecture youve gotta be kidding. Sep 22, 2006 windell writes after trying out our simple demonstration of magnetohydrodynamic mhd propulsion, you might want to make something a little more practical. Heres how to build a simple little boat that moves through salt water at a snails pace via mhd propulsion. A magnetohydrodynamic drive or mhd accelerator is a method for propelling vehicles using only electric and magnetic fields with no moving parts, accelerating an electrically conductive propellant liquid or gas with magnetohydrodynamics. Magnetohydrodynamic submarine propulsion systems request pdf. Analyses of underwater magnetohydrodynamic propulsion ieee. Oregon, a ship in the oregon files series of books by author clive cussler, has a. Magnetohydrodynamic augmented propulsion experiment ron j. Magnetohydrodynamic electromagnetic pulse assessment of the continental u. Yamato 1 ship, 1991 magnetohydrodynamic drive thruster in the museum of maritime science. This study analyzes the feasibility of mhd propulsion for marine vessels. In this way, one might hope to reduce fuel fraction and shrink vehicle size without sacrificing payload delivery capability. Agnetohydrodynamic mhd augmentation of thermal propulsion systems has been suggested as a plausible means of boosting exhaust velocity, and possibly improving overall specific energy attributes.
Magnetohydrodynamic mmd ship propulsion is the process of propelling a vehicular structure by a seawater electromagnetic pump. Magnetohydrodynamic electromagnetic pulse assessment of the. It has operated nuclear powered ships for more than 50 years. Nuclear naval propulsion pdf nuclear marine propulsion, particularly aircraft carriers fig. Windell writes after trying out our simple demonstration of magnetohydrodynamic mhd propulsion, you might want to make something a little more practical. Studies of mhd propulsion for underwater vehicles and. Is magnetohydrodynamics a viable type of propulsion for. Complete patent searching database and patent data analytics services. Description of a typical naval nuclear propulsion plant. Magnetohydrodynamic electromagnetic pulse assessment of.
To complete this presentation of engineering magnetohydrodynamics, two areas of application, namely. The future power generation with mhd generators magneto. Electric grid geomagnetically induced current and transformer thermal analysis. Sea water magnetohydrodynamic mhd propulsion for marine vehicles offers many unique features. The scaling relations for the electrical and hydraulic efficiencies of mhd pumpjets show that overall efficiencies 50% are feasible at speeds of 40 knots and higher provided that magnetic fields 5t can be. The science of magnetohydrodynamics will enable you to build a. Mhd propulsion has been mostly tested with models of ships and submarines in seawater. Comparisons are made with directdrive mhd propulsion systems. In ideal mhd, the magnetic field and the fluid are frozen together. This allows the ship to turn very sharply and brake instantly, instead of gliding for a few miles. Ufo unidentified flying object magnetohydrodynamics mhd. The mhd force propelling the ship can be generated in various ways.
What it means to be a sailor in the naval nuclear propulsion program. Litchford1 nasa marshall space flight center john t. Jan 09, 2016 this is my first attempt at a magnetohydrodynamic propulsion system made with common household supplies. Magnetohydrodynamic mhd power plants offer the potential for largescale electrical power generation. Not something ive been involved in directly, but a good question i noted nobody had responded to yet, and i have touched on mhd for spacecraft propulsion and power generation in the distant past, so i will give it a shot. Apr 08, 2011 this is my semester project for university physics 2426 at lcc with dr. Magnetohydrodynamic power generator physics britannica. Surprisingly enough, a working example of this futuristic drive system is quite easy to build.
A submarine employing this type of propulsion was immortalized in the movie hunt for red october. Magnetohydrodynamic principles are also used in plasma accelerators for ion thrusters for spacecraft propulsion, for lightionbeam powered inertial confinement, and for magnetohydrodynamic power generation. Magnetohydrodynamic mhd power generation process is basically based on the physics background of space plasma. The drive system in principle uses electric current and magnetic fields to force water in a. Make a magnetohydrodynamic propulsion boat evil mad. In valhalla rising, clive cussler writes the same drive into the powering of captain nemos nautilus. This propulsion system can be applied to a surface ship or a submerged vehicle. This is known as the lorentz force, whose magnitude in newtons on any specific charged particle can be calculated by adding the density of the electric field in volts per meter to the instantaneous velocity of the particle in ms, multiplying the. Mhd propulsion is to exploit the force that is experienced from the electric current which is emitted from a pair of electrodes and flow in a.
A magnetohydrodynamic drive or mhd propulsor is a method for propelling seagoing vessels using only electric and magnetic fields with no moving parts, using magnetohydrodynamics. Lineberry2 lytec, llc over the past several years, efforts have been under way to design and develop an operationally flexible research facility for investigating the use of crossfield mhd. Magnetohydrodynamic mhd propulsion is a means of using electrical current, instead of a noisy propeller, to push a ship through the water. Is magnetohydrodynamics a viable type of propulsion for large. Inductiondrive magnetohydrodynamic propulsion springerlink. Mhd propulsion has thus been proposed in seawater for high speed cargo. The magnetohydrodynamic power generator 8 is a device that generates electric power by means of the interaction of a moving fluid usually a ionized gas or plasma and a magnetic field. Pdf magnetohydrodynamics or simply mhd is a field of science that. Us3322374a magnetohydrodynamic propulsion apparatus.
The future power generation with mhd generators magneto hydro. Magnetohydrodynamic ship propulsion with superconducting. This is my first attempt at a magnetohydrodynamic propulsion system made with common household supplies. Introduction to magnetohydrodynamics mhd antoine cerfon, courant institute, new york university email. The magnetohydrodynamic mhd propulsion ship by meng han.
After trying out our simple demonstration of magnetohydrodynamic mhd propulsion, you might want to make something a little more practical. Physics, electrochemistry, and engineering optimization analysis for sea water mhd propulsion abstract 3. Magnetohydrodynamic augmented propulsion experiment. A computational magnetohydrodynamic model of a gasdynamic fusion space propulsion system by chad j. Application to pumps for hazardous fluids and liquidmetal coolants are also discussed. The fluid is directed to the rear and as a reaction, the vehicle accelerates forward the first studies examining mhd in the field of marine propulsion date. Electromagnetic propulsion for cargo submarines pdf.
Pdf a microfluidic pump is presented using an ac magnetohydrodynamic mhd propulsion system in which the lorentz force is used to propel an. A magnetohydrodynamic mhd drive is an engine with no moving parts that creates thrust by accelerating a charged fluid with an electromagnetic field. Nuclear electric magnetohydrodynamic propulsion for submarine. They concluded that at higher fields greater than 6 t, practical mhd propulsion systems appear possible. This thesis discussed an investigation of superconducting technology for a shipboard magnetohydrodynamic propulsion system. Mhd is related to engineering problems such as plasma confinement, liquidmetal cooling of nuclear reactors, and electromagnetic casting among others. The word magnetohydrodynamics is comprised of the words magneto meaning magnetic, hydro meaning water or liquid and dynamics referring to the movement of an. Request pdf magnetohydrodynamic submarine propulsion systems magnetohydrodynamic propulsion systems for submarines offer several significant. A model oj the ns savannah, which is now demonstrating nuclear powered ship propulsion, is shown on the lefthand page. In this project, i investigated water emf and found the. The basic principle is the faradays law of electromagnetic induction.
Effects of magnetohydrodynamic energy generation on. A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext. The attribute of high power derives from exceptionally good chemicaltothermaltokinetic energy. The caterpillar drive was a fictional magnetohydrodynamic propulsion system. Electrical characteristics of the electrolysis process in an mhd seawater thruster abstract 34. Based on the principles of magnetohydrodynamics mhd, the concept of open water efficiency was used to optimize the preliminary design of a mhd thruster. A magnetohydrodynamic drive or mhd accelerator is a method for propelling vehicles using. Mhd propulsion has thus been proposed in seawater for high speed cargo submarines 5, silent propulsion of naval submarines 6,7, or high speed ship without any cavitation 8. Introduction in general, thermal propulsion systems exhibit attributes of very high power but low specific energy. Magnetohydrodynamic urbulencet mhd some exacts relationships intermittency mhd approximation crucial role of the magnetic eld in geophysical and astrophysical uid dynamics stellar or solar wind, convective zone of stars, accretion discs, magnetic eld generation by dynamo e ect. Magnetohydrodynamic power generator, any of a class of devices that generate electric power by means of the interaction of a moving fluid usually an ionized gas or plasma and a magnetic field. A novel concept with a bright future, magneto hydrodynamic technology is one of the most promising alternate propulsion systems for ships in the market today. Performance of a magnetohydrodynamic accelerator using airplasma as working gas, elsevier paper, energy conversion management, vol. Review of magnetohydrodynamic pump applications sciencedirect.
Nuclear electric magnetohydrodynamic propulsion for. The technology is also famously known as caterpillar drive and was even showcased in the famous movie the hunt for red october. Propulsive efficiencies of magnetohydrodynamic submerged. In the laboratory, magnetohydrodynamics is important in the magnetic confinement of plasmas in experiments on controlled thermonuclear fusion.
Magnetohydrodynamic article about magnetohydrodynamic by. A magnetohydrodynamic accelerator is an mhd converter that imparts motion to an electrically conductive fluid initially at rest, using cross electric current and magnetic field both applied within the fluid. There is no need for propellers, and therefore no noise. Magneto hydrodynamic is a technology by which a ship can be propelled using magnetic power. Magnetohydrodynamic propulsion apparatus filed sept. Oregon, a ship in the oregon files series of books by author clive cussler, has a magnetohydrodynamic drive.
Apr 15, 2018 magnetohydrodynamics mhd is the physicalmathematical framework that concerns the dynamics of magnetic fields in electrically conducting fluids, e. Sep 19, 2006 the caterpillar drive was a fictional magnetohydrodynamic propulsion system. The working principle involves electrification of the propellant gas or water which can then be directed by a magnetic field, pushing the vehicle in the opposite. Magnetohydrodynamic power generation the magnetohydrodynamic power generator8 is a device that generates electric power by means of the interaction of a moving.
Demonstrate magnetohydrodynamic propulsion in a minute. Morley the authors wish to acknowledge the generous extraction of material on gaseous mhd power generation from the previous edition, authored by john c. Yamato 1 is the first superconducting electromagnetohydrodynamic mhd propulsion ship in the world. Apr 17, 2017 not something ive been involved in directly, but a good question i noted nobody had responded to yet, and i have touched on mhd for spacecraft propulsion and power generation in the distant past, so i will give it a shot. This is my semester project for university physics 2426 at lcc with dr. Experimental and theoretical study of magnetohydrodynamic.
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