Skyrmions dynamics in the approximation of point-particle skyrmions is considered in the multiferroic insulators, where the spiral magnetic structure is accompanied by finite electric dipole moment. The skyrmion motion is studied in the gradients of perpendicular magnetic and electric fields. The nonuniform magnetic field with a fixed gradient magnitude leads to the spiral motion, where skyrmion circulates in the plane perpendicular to the direction of the magnetic field. The frequency of circulation is fixed by the derivative of the external magnetic field and the magnitude of the dipole moment. Application of the additional electric field leads to the drift motion of skyrmions resulting in the magneto-dipolar Hall effect, the electric field is perpendicular to the magnetic field, but their gradients have the same direction. Hydrodynamics of the gas of interacting skyrmions in the crossed nonuniform electric and magnetic fields shows the new type of hydrodynamical instability caused by the drift motion. Three regimes of instability are described.

在多铁性绝缘体中考虑了点粒子Skyrmion近似中的Skyrmions动力学，其中螺旋磁性结构伴随着有限的电偶极矩。在垂直磁场和电场的梯度中研究了天体离子运动。具有固定梯度大小的不均匀磁场会导致螺旋运动，其中天spiral在垂直于磁场方向的平面内循环。循环频率由外部磁场的导数和偶极矩的大小决定。施加额外的电场会导致天体离子的漂移运动，从而导致磁偶极霍尔效应，电场垂直于磁场，但是它们的梯度具有相同的方向。在交叉的不均匀电场和磁场中相互作用的天体离子气体的流体动力学显示了由漂移运动引起的新型流体力学不稳定性。描述了三种不稳定状态。