REQUIREMENTS FOR OPTIMAL PERFORMANCE AND THE CONSEQUENCES OF USING TOROIDAL SHAPED ELECTRODES IN MULTICHANNELING SWITCHES

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[唯一标识符]:CDSTIC.ISTP.15358
[文献来源]:科学技术会议录索引(ISTP)
[文献类型]:科技会议
[标题]:REQUIREMENTS FOR OPTIMAL PERFORMANCE AND THE CONSEQUENCES OF USING TOROIDAL SHAPED ELECTRODES IN MULTICHANNELING SWITCHES
[作者]:KR LeChien;JM Gahl;JM Elizondo;KW Struve
[出版单位]:IEEENEW YORK
[ISSN_ISBN]:0-7803-7915-2
[会议名称]:14th IEEE International Pulsed Power Conference,DALLAS, TX,June 15-18, 2003
[来源]:PPC-2003: 14TH IEEE INTERNATIONAL PULSED POWER CONFERENCE, VOLS 1 AND 2, DIGEST OF TECHNICAL PAPERS,pp 1385-1388
[编辑者]:EM Giesselmann;A Neuber
[主办单位]:IEEE;Nucl & Plasma Sci Soc
[地址]:KR LeChien,UNIV_MISSOURI, DEPT ELECT ENGN, 349 ENGN BLDG W, COLUMBIA, MO 65211 USA
[专业领域]:ENGINEERING, ELECTRICAL & ELECTRONIC,PHYSICS, APPLIED
[唯一标识符]:CDSTIC.ISTP.633546
[文献来源]:科学技术会议录索引(ISTP)
[文献类型]:科技会议
[标题]:APPROXIMATING AND EXPLOITING THE RESIDUAL REDUNDANCIES-APPLICATIONS TO EFFICIENT RECONSTRUCTION OF SPEECH OVER NOISY CHANNELS
[作者]:F LAHOUTI;AK KHANDANI
[出版单位]:I E E ENEW YORK
[ISSN_ISBN]:0-7803-7041-4
[会议名称]:IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP),SALT LAKE CITY, UT,May 7-11, 2001
[来源]:2001 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH, AND SIGNAL PROCESSING, VOLS I-VI, PROCEEDINGS - VOL I: SPEECH PROCESSING 1: VOL II: SPEECH PROCESSING 2 IND TECHNOL TRACK DESIGN & IMPLEMENTATION OF SIGNAL PROCESSING SYSTEMS NEURALNETWORKS FOR SIGNAL PROCESSING: VOL III: IMAGE & MULTIDIMENSIONAL SIGNAL PROCESSING MULTIMEDIA SIGNAL PROCESSING;IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS;IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS;IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-FUNDAMENTAL THEORY AND APPLICATIONS;IEEE TRANSACTIONS ON COMMUNICATIONS;IEEE TRANSACTIONS ON COMMUNICATIONS;IEEE TRANSACTIONS ON COMMUNICATIONS;IEEE TRANSACTIONS ON COMMUNICATIONS;IEEE TRANSACTIONS ON INFORMATION THEORY;IEEE TRANSACTIONS ON INFORMATION THEORY,pp 4022-4022
[编辑者]:CIEEE
[主办单位]:IEEE Signal Processing Soc
[地址]:,
[专业领域]:ACOUSTICS,ENGINEERING, ELECTRICAL & ELECTRONIC,COMPUTER SCIENCE, THEORY & METHODS,COMPUTER SCIENCE, ARTIFICIAL INTELLIGENCE
[唯一标识符]:CDSITC.AEROSPACE.N93-14883
[文献来源]:美国航空航天数据库(aerospace)
[资源原始索取号]:N1993-14883; Reference AN: N93-14883
[标题]:Numerical modeling of a vortex stabilized arcjet (Ph.D. Thesis, 1991 Final Report)
[作者]:PAWLAS GARY E
[文摘]:Arcjet thrusters are being actively considered for use in Earth orbit maneuvering applications. Experimental studies are currently the chief means of determining an optimal thruster configuration. Earlier numerical studies have failed to include all of the effects found in typical arcjets including complex geometries, viscosity, and swirling flow. Arcjet geometries are large area ratio converging nozzles with centerbodies in the subsonic portion of the nozzle. The nozzle walls serve as the anode while the centerbody functions as the cathode. Viscous effects are important because the Reynolds number, based on the throat radius, is typically less than 1,000. Experimental studies have shown that a swirl or circumferential velocity component stabilizes a constricted arc. This dissertation describes the equations governing flow through a constricted arcjet thruster. An assumption that the flowfield is in local thermodynamic equilibrium leads to a single fluid plasma temperature model. An order of magnitude analysis reveals the governing fluid mechanics equations are uncoupled from the electromagnetic field equations. A numerical method is developed to solve the governing fluid mechanics equations, the Thin Layer Navier-Stokes equations. A coordinate transformation is employed in deriving the governing equations to simplify the application of boundary conditions in complex geometries. An axisymmetric formulation is employed to include the swirl velocity component as well as the axial and radial velocity components. The numerical method is an implicit finite-volume technique and allows for large time steps to reach a converged steady-state solution. The inviscid fluxes are flux-split, and Gauss-Seidel line relaxation is used to accelerate convergence. Converging-diverging nozzles with exit-to-throat area ratios up to 100:1 and annular
[关键词]:ARC JET ENGINES; CENTERBODIES ; CONVERGENT DIVERGENT NOZZLES; MATHEMATICAL MODELS; NOZZLE WALLS; SWIRLING ; THROATS ; VISCOUS FLOW; VORTICES ; EARTH ORBITS; LOCAL THERMODYNAMIC EQUILIBRIUM; NAVIER STOKES EQUATION; ORBITAL MANEUVERS; PLASMA TEMPERATURE; RA
[出版年份]:1992
[专业领域]:SPACECRAFT PROPULSION AND POWER