The linear stability between a Newtonian and a power-law fluid under a normal electric field

摘要: Abstract In this paper, the linear stability of interface between a Newtonian and power-law fluid flowing in microchannel subjected to an electric field applied normal flat is studied. The fluids are assumed be immiscible, incompressible leaky dielectric. instability may arise due different mechanisms; such as, jumps electrical properties fluids, non-Newtonian characteristic that demonstrated via index, viscosity stratification. addition these three mechanisms, strength base flow plays important role determining as opposed Newtonian/Newtonian system. aim paper investigate effect interaction modes instabilities through dispersion neutral curves. For purpose, effects voltage observed number, thickness ratios, index fast charge relaxation times, analytical expression for number obtained. It can either have stabilizing or destabilizing similar Lastly, it found kinematic condition main reason instability. Otherwise, general case, both interfacial distribution dominant sources