利用介观模拟的耗散粒子动力学法,对纺丝射流稳定直线段区域进行变电场模拟,并以三维的射流路径呈现出来.研究了不同控制频率下的变电场对聚合物分子链的运动情况、射流直径及下落行为的影响.结果表明,与稳定电场相比,周期性改变电场能够有效提高分子链的拉伸,使射流直径减小,较低的控制频率能够加速射流的下落,从而获得较细的纤维. By using the dissipative particle dynamics method of mesoscopic simulation, the strands of the stable jet flow field are simulated by the electric field and presented in the three-dimensional jet path.The effect of electric field with different control frequency on the polymer chain The jet diameter and the drop behavior were investigated.The results show that the periodic change of the electric field can increase the stretching of the molecular chain effectively and reduce the jet diameter compared with the steady electric field and the lower control frequency can accelerate the jet drop , Resulting in finer fibers.