Symbol	Name	Unit
$\omega$	Angular frequency	rad/s
Di	Bubble diameter	m
${\sigma }_b$	Bubble surface tension	N/m
R	Bubble radius	m
τe	Charge-relaxation time	s
N	Data number	-
Xi	Data obtained	-
Δρ	Density difference between oil and gas	kg/m3
VDBV	Dielectric breakdown voltage	V
${\tilde{I}}_d$	Displacement electric current	A
l	Domain characteristic length	m
${\tilde{S}}_i,{\tilde{S}}_j$	Dual faces	m2
$Q_f$	Electric charge in dual volumes	C
σ	Electric conductivity	S/m
Mσ	Electric conductivity constitutive matrix	S
${\tilde{I}}_f$	Conductive electric current	A
$\overrightarrow{E}$	Electric field strength	V/C
$\tilde{\psi }$	Electric flow	C
${\tilde{\psi }}_0$	Electric flow in vacuum	C
$M_{ϵ}$	Electrical permittivity constitutive matrix	F
ε0	Electrical permittivity in vacuum	F/m
Mε0	Electrical permittivity in vacuum constitutive matrix	F
ε	Electrical permittivity of the medium	F/m
U	Electric potential difference	V
$f$	Frequency	Hz
g	Gravity acceleration	m/s2
$I_c$	Incidence vector of relative cohomology between oil volume and electrode surface.	-
C, $\tilde{C}=C^t$	Incidence matrix faces–edges in primal and dual mesh	-
$D,\tilde{D}$	Incidence matrix faces–volumes in primal and dual mesh	-
G	Incidence matrix edges–nodes of primal mesh	-
j	Imaginary unit	-
${\overrightarrow{F}}_e$	Kelvin polarization force	N
Φ	Magnetic flow	Wb
$\tilde{F}$	Magnetomotive force	A
${\rho }_{oil}$	Oil density	kg/m3
${\mu }_{oil}$	Oil dynamic viscosity	Ns/m2
$h_{oil}$	Oil height	m
${ϵ}_{oil}$	Oil relative permittivity	-
${\tilde{\psi }}_P$	Polarization electric flow	C
$M_{\chi P}$	Polarization electrical permittivity constitutive matrix	F
$Y_i$	Reference data	-
$\overline{Y}$	Reference data mean
εr	Relative electrical permittivity	-
φ	Scalar electric potential	V
r	Spherical particle radius	m
τ	Sinusoidal signal period	s
c	Speed of light	m/s
T	Temperature	°C
VT	Terminal velocity of the bubble in the oil	m/s
ν	Tetrahedron volume	m3
τem	Time electromagnetic constant	s
τm	Time magnetic constant	s
${\tilde{I}}_t$	Total current	A
$\overrightarrow{J}$	Volumetric density current	A/m2
${\overrightarrow{J}}_d$	Volumetric density of conductive current	A/m2