. Author manuscript; available in PMC: 2014 Dec 18.

Published in final edited form as: Chem Eng Sci. 2013 Sep 18;104:10.1016/j.ces.2013.09.020. doi: 10.1016/j.ces.2013.09.020

Table 1.

The electrostatic and hydrodynamic boundary conditions of Domain B.

Boundary	Electrostatic	Hydrodynamic
A	ϕ_r = 0	u_r = 0
B	ϕ = V_nozzle	u_z = Q_core/A_core
C	ϕ = V_nozzle	u = 0
D	ϕ = V_nozzle	u_z = Q_shell/A_shell
E	ϕ = V_nozzle	u = 0
F	ϕ_z = 0	P = 0
G	ϕ = V_right	P = 0
H	ϕ = V_bottom	P = 0

The boundaries are labeled in Fig. 2. ϕ: voltage; u: velocity of fluid; p: pressure of fluid; V_nozzle: nozzle voltage; V_right: voltage profile determined from Domain A; V_bottom: bottom voltage determined from Domain A; Q_core: volumetric flow rate of core phase; Q_shell: volumetric flow rate of shell phase; A_core: cross-sectional area of core channel; A_shell: cross-sectional area of shell channel. The subscripts r and z represent the r- and z-components, respectively.