查询词典 vector potential

A mathemetical model of magnetic field in electromagnetic separation of inclusions from molten aluminum under rectangle coil and 50Hz current is presented according to the magnetic vector potential integral equation and the basic theory of magnetohydrodynamics. The magnetic field distribution in the gap of coils is simulated by the model and the actual magnetic field distribution also is measured. The experimental results show that the magnetic field distribution in the gap of coils is uniform and is consistemt with the model simulation. The magnetic field designed accord the simulated result is proved suitable in the practice.

摘 要：根据电磁流体力学的基本理论，利用矢量磁位积分，建立了在采用矩形电磁线圈和工频电源的条件下电磁分离铝熔体中夹杂的电磁场数学模型，模拟计算了电磁感应线圈气隙中的磁场分布状态，同时对制做的感应线圈的实际磁场进行了测量模拟计算磁场的分布状态与实际磁场的测量结果基本一致，都表明在电磁感应线圈气隙中磁场分布均匀，可以进行分离铝熔体中的非金属夹杂。

The signal is modulated by rotating the torsion balance to ensure the effectiveness of detection for all possible orientations of the vector potential, and the influences of sidereal disturbances of environment are also removed by virtue of this modulation method.

此后，针对2002年的实验中存在的问题，作者重新设计了新的实验方案和高真空调制实验平台，并于2005年完成了改进的扭秤调制实验。

A two component vector potential in direct BEM is decuced in this thesis, which is the first successful one of indirect BEM for 3D eddy current problems.

用间接边界元法计算三维涡流场在国内、外都还未见成功的先例。

Also the implementation in FEM based on magnetic vector potential is introduced.

阐述了在磁矢量有限元中的实现，最后给出计算实例。

The implementation on how to apply this technique in FEM based on magnetic vector potential is also introduced.

还介绍了TRL算子在采用矢量磁位函数有限元公式中的实现。

The problem of uniqueness in 3D electromagnetic field computation using magnetic vector potential A as the variable is studied in this paper.

本文结合具体的工业课题，主要进行了棱边有限元法的基础理论及其在三维非线性涡流场及损耗问题中的应用研究。

Thus, only spatial components of the four-dimensional vector potential are needed to be considered in our work.

这样，只有胶子场四维矢势的空间分量需要考虑。

Magnetic vector potential was regarded as variables to gain solution of excitation magnetic field and armature response magnetic field.

以矢量磁位作为求解变量得到励磁磁场和电枢反应磁场的二维解。

Because of the use of Lorentz gauge, the extraction of capacitance matrix can be avoided and replaced by the calculation of the divergence of vector potential, which has much less amount of computation.

但在新模型中，由于用洛仑兹规范代替了标量电位的积分表达式，电容矩阵的提取就可免去，而代之以数量大为减少的矢量磁位散度的计算。

Firstly, a scalar and vector potential analysis models of tooth-layer magnetic field in a two-degree-of-freedom motor is developed, which is the same as standard hybrid step motor. By applying the finite element method, the distribution of the tooth-layer magnetic field is studied in detail. It provides an effective means for further calculation of performance and parameters of the motor.

首先，对两自由度电机产生转矩的关键部分——齿层区域的磁场进行了细致深入的分析，提出了齿层磁场的标量位和向量位分析模型，并通过有限元的数值计算，对各种情况下齿层磁场的分布规律从微观上进行了形象的分析和研究，为完整电机的进一步计算提供了有力的工具。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新