Results 21 to 30 of about 2,327,852 (287)
Formation of magnetic flux tubes in cylindrical wedge geometry [PDF]
, 2012 Three-dimensional (3D) MHD numerical simulations have not been able to demonstrate convincingly the spontaneous formation of large vertical flux tubes.
Hurlburt, Neal +8 more
core +1 more source
Quasistatic Contraction of Magnetic Protostars Due to Magnetic Flux Leakage [PDF]
Symposium - International Astronomical Union, 1981 A protostar with sufficient magnetic flux can be in quasistatic equilibrium. The structure at the time t of such an axisymmetric protostar immersed in a medium of finite pressure is determined when the mass m(ϕ, t) in each axisymmetric magnetic tube with the flux ϕ is given.
openaire +1 more source
Sensors, 2023 In order to solve the problem of the quantification of detection signals in the magnetic flux leakage (MFL) of defective in-service oil and gas pipelines, a non-uniform magnetic charge model was established based on magnetic effects.
Bin Liu +5 more
doaj +1 more source
Analysis and Modeling of Axial Leakage for Spoke-Type Hybrid Permanent Magnet Machines
IEEE Access, 2023 In this study, we propose a novel analysis method for a spoke-type permanent magnet (PM) synchronous motor (PMSM) using two types of PMs that consider axial leakage flux using a magnetic equivalent circuit (MEC).
Chang-Hoon Seok +4 more
doaj +1 more source
Assessing electron heat flux dropouts as signatures of magnetic field line disconnection from the Sun [PDF]
, 2005 Suprathermal electrons focused along magnetic field lines, called the strahl, carry heat flux away from the Sun. Various factors can cause heat flux dropouts (HFDs), including times when the strahl almost vanishes.
Larson, DE +5 more
core +1 more source
IEEE Access, 2019 Permanent magnet (PM) machine with consequent pole (CP) rotor can improve the PM utilization ratio. However, one group PMs with the same polarity is replaced by iron core which deteriorating the electromagnetic performance of the machine, including even ...
Feng Li +3 more
doaj +1 more source
Effective Modeling of Leakage Inductance for use in Circuit Simulation
, 2008 Theoretical methods for the calculation of winding losses with respect to frequency have been well documented, but the variation in leakage inductance of magnetic components due to frequency has been less well addressed. In this paper Dowell’s well-known
Brown, Andrew, Wilson, Peter
core +2 more sources
Auroral streamers and magnetic flux closure [PDF]
, 2007 On 7 December 2000 at 2200 UT an auroral streamer was observed to develop above Scandinavia with the IMAGE-FUV global imagers. The ionospheric equivalent current deduced from the MIRACLE-IMAGE Scandinavian ground-based network of magnetometers is typical
Kauristie, K. +6 more
core +6 more sources
Unsaturated Magnetic Flux Leakage Detection and Identification of Scratches in Oil and Gas Pipelines
Shiyou jixie, 2022 The online detection technology for oil and gas pipelines can effectively detect metal loss defects, but it has limited ability to distinguish corrosion and mechanical damage scratches.
Zhang Xuewei +3 more
doaj
Sensors, 2012 Condition assessment of cables has gained considerable attention for the bridge safety. A magnetic flux leakage and magnetostrictive guided wave hybrid transducer is provided to inspect bridge cables.
Jiang Xu +3 more
doaj +1 more source