نتایج جستجو برای: drift flux model
تعداد نتایج: 2192892 فیلتر نتایج به سال:
this paper presents developing an analytical model for flux switching motors. the motor is a class of variable reluctance motors that has two windings on stator; a field winding and an armature winding. due to saliency of both stator and rotor poles, accurate modeling is difficult which arises from the nonlinear behavior of the machine. this paper presents a simple model which is able to predic...
The energy spectra of cosmic-ray low-energy antiprotons ( *p's) and protons ( p's) have been measured by BESS in 1999 and 2000, during a period covering reversal at the solar magnetic field. Based on these measurements, a sudden increase of the *p/p flux ratio following the solar magnetic field reversal was observed, and it generally agrees with a drift model of the solar modulation.
The statistical properties of the E ×B flux in different types of plasma turbulence simulations are investigated using probability density distribution functions (PDF). The physics included in the models ranges from two dimensional drift-wave turbulence to three dimensional MHD simulations. The PDFs of the flux surface averaged transport are in good agreement with an extreme value distribution ...
in this paper, a three-dimensional finite element model has been developed to simulate the laser-tig hybrid welding (hlaw) of stainless steel 1.4418 with thickness of 4 mm. transient temperature profile and dimensions of the fusion zone and heat affected zone (haz) during welding process are calculatedusing finite element method (fem) and were solved in the abaqus/standard software.the heat sou...
In proto-neutron stars with strong magnetic fields, the neutrino-nucleon scattering/absorption cross sections depend asymmetrically on the direction of neutrino momentum with respect to the magnetic field axis, a manifestation of parity violation in weak interactions. We develop the moment formalism of neutrino transport in the presence of such asymmetric neutrino opacities. For a given neutrin...
Increasing evidence that the edge plasma plays a crucial role in global tokamak continement motivates this study of two-dimensional (2-D) (0,~) computational models of fluid transport in the edge plasma region. Fluid plasma equations, boundary conditions, and a coupled neutral-plasma model are developed assuming toroidal symmetry. A plasma potential equation~is presented for consistent drift fl...
Marine icing phenomenon depends on multiple variables like vessel characteristics and uncertain factors environmental parameters, developing an accurate model for its forecasting, evaluation, estimation is very challenging. Commonly, most severe ice accretion caused due to sea spray. The past attempts measure impinging spray flux were carried out specific parts of the cloud, empirical spray-flu...
Abstract The van Roosbroeck system models current flows in (non-)degenerate semiconductor devices. Focusing on the stationary model, we compare excess chemical potential discretization scheme, a flux approximation which is based modification of drift term densities, with another state-of-the-art Scharfetter–Gummel namely diffusion-enhanced scheme. Physically, scheme can be interpreted as modifi...
The Hybrid Flux Observation Model (HFOM) is frequently employed in induction motor flux observers to ensure accurate and dynamic responses over the entire speed range. Nevertheless, voltage model, designed stationary reference frame, susceptible integral saturation drift issues. These problems lead diminished estimation accuracy compromised performance when conventional HFOM utilized. To mitiga...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید