... asia government drillstring design brushless dc motor rotor scc china government bldc motor artificial intelligence vector modeling & simulation control strategy power switch magnetic field different control strategy torque control drive module position signal type control...

... such as steel. As a result, when magnetic underwater vehicle is sailing under the sea, it will generate inductive magnetic flux density which superimposes onto the earth's background magnetic field. Hence the change of spatial magnetic field distribution around the target is formed, which probably causes...

... electric conductivity output power eddy current reservoir simulation generator magnetic field load position conductive area electrode current effective section ABSTRACT Taking the induced magnetic field, the electrode current, the load position and the conductive area of the load...

... effective section electromagnetic separation force magnetic field ABSTRACT Electromagnetic separation provides a new way to treat oilfield produced water. In this paper, the process of electromagnetic separation of oilfield produced water is analyzed theoretically and numerically...

... sensor mechanical antenna optimization problem pipeline robot asset and portfolio management coordinate system magnetic sensor magnetic dipole fluxgate sensor midstream oil & gas artificial intelligence positioning absolute error three-dimensional positioning magnetic field...

... the specimen was detected by two fluxgate magnetometers. The results indicated that the evolution of the magnetic field at defect shows significant differences compared to the smooth area. The evolutions of the magnetic fields similar in the first two stages, however, in the third stage, the magnetic field...

... good and significant results (Tasaki, Sugawara and Mori, 1991; Roy, 1993; Sasakawa, Takezawa and Sugawara, 1993). Gilbertt, Lint (1990) and Kom, Brunet (1995) used multiple linear channels arranged around a circle to reduce the leakage magnetic field. Tan, Yun and Ling (1997) established a mathematical...

... with a diameter of 10∼100pm are suspended in seawater and it is less than 10μm when the oil is emulsified. Seawater is electrically conductive and oil is non-conductive. Therefore' an electromagnetic force is produced in seawater under the action of an applied electric and magnetic field. Oil and seawater have...

... upstream oil & gas self magnetic flux leakage production logging magnetic flux density permanent magnetization magnetic flux leakage magnetic field slit tip production monitoring steel plate background field linear relation fatigue crack magnetization smfl slit marine...

... of the oil droplet , and decreases with vm and increases with d2, and there is a certain fe to get the maximal when the opposite effects from the electromagnetic force and inertial force get balanced. KEY WORDS: Oil-seawater mixed flow; magnetic field; electric field; oil-seawater separation; marine oil...

... ABSTRACT In order to study the effect of electromagnetic force on the flow of magnetofluid, Comsol Multiphysics software is used by adding fluid module and electromagnetic module. A weak coupling solution is made for the flow of the magnetofluid in the external magnetic field and the velocity...

... results confirm the validity of the numerical simulated model. KEY WORDS: Wave energy; MHD generator; liquid metal; Ga alloy; induced magnetic field; 3D simulation. INTRODUCTION Ocean waves may become an unquestionable alternative to actual clean energy sources in the near future. The development...

... statement magnetic field ndbc directional wave measurement magnetometer wave measurement wave direction directional wave measurement bouchard coefficient buoy hull pre-deployment calibration deployment frequency world meteorological organization calibration post-deployment calibration ndbc...

..., there are many nondestructive testing methods available. Magnetic methods to monitor fatigue cracks are not yet fully exploited and seem promising due to the possibility of passive monitoring using the Earth magnetic field as source. Measurements and numerical simulations show that magnetic fields in steel...

... and magnetic fields, which makes the oil to be separated from the seawater. There is level vortex in the upper space of the MHD channel and jet-flow and vortex in the middle and upper part of the separation tank, which is adverse for the oil's separation and recovery. And improvement on the structure...

... on implications of availability of such a system on risk based inspections and structural health monitoring systems. detection transducer sensor application magnetic field upstream oil & gas flaw monitoring operator fatigue crack offshore nde method disadvantage detector ultrasonic...

... flows (plasma, liquid metals, electrolytes) using LBM. Deller (2002) modified the low Mach number LBM to include the magnetic Lorentz force. The magnetic field (B) is represented by a separate vector-valued magnetic distribution function which obeys a vector Boltzmann--BGK equation and recovers...

..., Xue, Li and Zhang, 2000). Therefore, it is significative that EMS is applied in TSAW. However, there are few reports of EMS applied in TSAW. The effect of EMS on TSAW lies on the distribution and magnitude of magnetic field which is determined by the electromagnetic stirring head. magnetic...

... model was designed with two main components: MR damper and steel rope spring. Magnetorheological fluids comprise of a carrier fluid, magneticresponsive particles and surfactants or suspension agents. The particles become polarized in the presence of an applied magnetic field, and organized into chains...

... the magnetic field is 0.5 T. INTRODUCTION Ocean wave energy is a renewable energy source with a huge potential, harnessing the immense power of ocean waves to do useful work has been a dream of mankind for millennia. In recent decades, this goal has become more specific, i.e., conversion of ocean wave...