Symbol	Physical Significance
J	The stability of emulsions
V emulsion	the volume of static residual emulsion
V total	the total volume of the collected emulsion before the settlement
V water	the volume of the separated water in the emulsion
η	the emulsion of the demulsification rate
φ	the rate of water content in the emulsion
V kerosenel	the volume of separated kerosene in the oil phase
Vtotal′	the total volume of the collected liquid
Vwater′	the volume of separated water after demulsification
De	Dean number
dc	the spiral diameter
di	the hydraulic equivalent diameter of the microchannel
Re	the Reynolds number
ρ	the density of emulsions
v	the flow rate of emulsions
µ	the dynamic viscosity of emulsions
D (4,3)	the mean volume diameter of emulsions