Search results for "Cylindrical geometry"

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Review of the PEA Method for Space Charge Measurements on HVDC Cables and Mini-Cables

2019

This review takes into account articles and standards published in recent years concerning the application of the Pulsed Electro Acoustic (PEA) method for space charge measurement on High Voltage Direct Current (HVDC) cables and mini-cables. Since the 80s, the PEA method has been implemented for space charge measurements on flat specimens in order to investigate space charge phenomena and to evaluate the ageing of dielectrics. In recent years, this technique has been adapted to cylindrical geometry. Several studies and experiments have been carried out on the use of the PEA method for full size cables and HVDC cable models. The experiments have been conducted using different arrangements of…

010302 applied physicspulsed Electroacoustic technique (PEA)Cylindrical geometryControl and Optimizationlcsh:TRenewable Energy Sustainability and the EnvironmentComputer science020209 energyEnergy Engineering and Power TechnologyMechanical engineering02 engineering and technologylcsh:Technology01 natural sciencesSpace chargeHVDC cablesSpace chargeSettore ING-IND/31 - ElettrotecnicaReliability (semiconductor)0103 physical sciences0202 electrical engineering electronic engineering information engineeringHigh-voltage direct currentElectrical and Electronic EngineeringEngineering (miscellaneous)Energy (miscellaneous)
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Monte Carlo simulations of the 2d-Ising model in the geometry of a long stripe

2011

Abstract The two-dimensional Ising model in the geometry of a long stripe can be regarded as a model system for the study of nanopores. As a quasi-one-dimensional system, it also exhibits a rather interesting “phase behavior”: At low temperatures the stripe is either filled with “liquid” or “gas” and “densities” are similar to those in the bulk. When we approach a “pseudo-critical point” (below the critical point of the bulk) at which the correlation length becomes comparable to the length of the stripe, several interfaces emerge and the systems contains multiple “liquid” and “gas” domains. The transition depends on the size of the stripe and occurs at lower temperatures for larger stripes.…

PhysicsNanoporeCylindrical geometryPhase transitionCondensed matter physicsHardware and ArchitectureMonte Carlo methodGeneral Physics and AstronomyModel systemIsing modelGeometryCritical point (mathematics)Computer Physics Communications
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