MAGNETIC fieldsPLASMA heatingA new model of a force-free magnetic flux rope with a high concentration of electric current on the axis is presented. The general property of axisymmetric force-free magnetic ropes is that with the exit of the top of the magnetic loop-rope into the corona, the ...
The structure and dynamics of the solar corona is dominated by the magnetic field. In most areas in the corona magnetic forces are so dominant that all non-magnetic forces like plasma pressure gradient and gravity can be neglected in the lowest order. This model assumption is called the force...
电流就是正电荷的运动,所以是不是也会受到洛伦兹力的作用,答案是肯定的:\vec{F}_{L}=L(\vec{I}\times\vec{B})。 其中B是磁感应强度(magnetic flux density),单位是\frac{Vs}{m^2}=T,特斯拉。 这里是叉乘(内积)的意思,叉乘的大小是两个量的大小乘积乘以sin夹角:a\times b=\left| a \right|\le...
The maximum electric current density within the FTE was ∼100 nA/m2 and the total current was 0.3 MA, which is comparable with the current per RE flowing on the local magnetopause. The magnetic flux inside the FTE was ∼4 × 105 Wb. Magnetic field data and plasma data show that ...
The Lorentz force arises from the interaction between an electrically conducting fluid and a magnetic field, when there is relative motion between the two. In terms of the magnetic field intensity B and the electric current density J, the Lorentz force per unit volume FL can be written alternati...
Colloidal magnetic nanoparticles have applications in engineering and biomedical. • Nanomagnetite synthesized via co-precipitation, wet grinding and microemulsion. • Interparticle forces in magnetite suspension are van der Waals, double layer and steric. • Surfactant or polymer used to adjust partic...
摘要: Studies the shift of the flux pinning force curve in Nb[sub 3]Sn superconducting thin films with very fine grain size. Magnetization measurements; Behavior of films at varying temperatures; Field dependence of the shear modulus.被引量: 6 ...
In the present research, aluminum oxide- water (Al2O3-H2O) nanofluid free convection due to magnetic forces through a permeable cubic domain with ellipse shaped obstacle has been reported. Lattice Boltzmann approach is involved to depict the impacts of magnetic, buoyancy forces and permeability on...
and a YBaCuO plate is used for the stator. To increase the levitation force, an additional circular permanent magnet is installed under the YBaCuO plate in the stator. Influence of the additional permanent magnet on the flux density distribution is shown. From the result, the shape of the ring...
The analytic calculation formulas for air-gap flux density and detent force due to end effects were derived.关键词: permanent magnet linear synchronous motor(PMLSM air-gap magnetic field detent force DOI: 10.1007/s11434-006-2076-2 被引量: 7 ...