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首页> 外文期刊>EPJ Web of Conferences >Magnetic fluid bridge between two cones and a cylinder in the magnetic field of a current-carrying wire
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Magnetic fluid bridge between two cones and a cylinder in the magnetic field of a current-carrying wire

机译：载流导线磁场中两个锥体和圆柱之间的磁性流体桥

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A magnetic fluid (MF) changes its surface shape in the magnetic field of a current-carrying wire while the current is changing. In the present paper, we propose to study a MF bridge which can open or close the channel formed by two cones and a cylinder by imposing the magnetic field of a wire. Numerical modelling of the bridge behavior for different values of MF volumes and currents in the wire is done for two cases: when the MF wets and does not wet surrounding solid boundaries. It is shown that the presence of limiting cones allows the MF to sustain the pressure drop which is much higher in case of non-wetting than in case of wetting. In case of wetting, the MF cannot sustain any pressure drop at low currents, but in case of non-wetting, the MF can do it even at zero current. It is found that in case of non-wetting, spasmodic and hysteresis phenomena are possible for some values of MF volumes and currents in the wire. The use of a MF in valves, dispensers and pumps is one of possible actuation methods.
机译：当电流变化时，磁性流体（MF）在载流导线的磁场中会改变其表面形状。在本文中，我们建议研究一种中频电桥，通过施加导线的磁场可以打开或关闭由两个圆锥和圆柱体形成的通道。针对两种情况，对导线中不同的MF体积和电流值的电桥行为进行了数值建模：两种情况：MF润湿且不润湿周围的固体边界。结果表明，限制锥的存在使MF承受的压降比未润湿的要高得多。在润湿的情况下，MF不能在低电流下承受任何压降，但是在不润湿的情况下，MF甚至可以在零电流下做到这一点。发现在不润湿的情况下，对于导线中的MF体积和电流的某些值，可能会出现痉挛和滞后现象。在阀门，分配器和泵中使用MF是一种可能的致动方法。

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