A critically charged drop is known to undergo Rayleigh fission by forming oppositely directed symmetric jets, which further disintegrate into progeny droplets. In this work, we present numerical simulations based on the axisymmetric boundary integral method and show that the electrical conductivity of the droplet not only affects the characteristics of the progeny droplets but also modifies the mode of drop breakup. It is observed that, at higher conductivity, the droplet undergoes fission by jet detachment from the mother drop, losing higher charge, while at lower conductivity, the jet relaxes back after ejecting a few progeny droplets that carry a lower charge.

已知带临界电荷的液滴会通过形成相反方向的对称射流来经历瑞利裂变，这些射流会进一步分解成后代液滴。在这项工作中，我们提出了基于轴对称边界积分法的数值模拟，并表明液滴的电导率不仅会影响后代液滴的特性，还会改变液滴破碎的模式。观察到，在较高的电导率下，液滴通过射流与母液滴分离而发生裂变，失去较高的电荷，而在较低的电导率下，射流在喷射出一些携带较低电荷的后代液滴后放松。