COMSOL 6.4 - Supported Physical Quantities for Model Inputs

Supported Physical Quantities for Model Inputs

The following table lists all supported physical quantities for use as model inputs with their category, base name, and SI unit:

Table 8-7: Supported Physical Quantities for Model Inputs.
API name	Description	Category	Base name	Unit
numberdensityacceptor	Acceptor concentration	Transport	Na	1/m3
angularfrequency	Angular frequency	General	omega	1/s
catalyticactivity	Catalytic activity	Transport	a	mol/s
charge	Charge	Electromagnetics	Q	C
inelasticpowerloss	Collisional power loss	Transport	Sen	W/m3
concentration	Concentration	General	c	mol/m3
massconcentration	Concentration	Transport	cm	kg/m3
conversion	Conversion	Transport	cr	1
correctedpressure	Corrected pressure	Transport	pc	Pa
correctedvelocity	Corrected velocity field	Transport	uc	m/s
current	Current	General	I	A
currentdensity	Current density	Electromagnetics	J	A/m2
currentsource	Current source	Electromagnetics	Qj	A/m3
depth	Depth	Acoustics	D	m
dispersedphasevolumefraction	Dispersed phase volume fraction	Transport	phid	1
displacement	Displacement	General	u_d	m
numberdensitydonor	Donor concentration	Transport	Nd	1/m3
downsidetemperature	Downside temperature	Hidden	Td	K
effectivegasdensity	Effective gas density	Transport	rhogeff	kg/m3
elasticshearstrain	Elastic shear strain	Solid mechanics	esh	1
uniaxialstrain	Elastic uniaxial strain	Solid mechanics	eax	1
displacementfield	Electric displacement field	Electromagnetics	Df	C/m2
electricfield	Electric field	Electromagnetics	E	V/m
electricpotential	Electric potential	Electromagnetics	V	V
electrolyteconductivity	Electrolyte conductivity	Hidden	sigmal	S/m
electricpotentialionicphase	Electrolyte potential	Hidden	phil	V
electrondensity	Electron density	Transport	ne	1/m3
electronenergydensity	Electron energy density	Transport	en	kg/(m·s3·A)
energy	Energy	General	Ene	J
energydensity	Energy density	Electromagnetics	W	Pa
effectiveplasticstrain	Equivalent plastic strain	Solid mechanics	epe	1
effectiveplasticstraininmatrix	Equivalent plastic strain in the matrix material	Solid mechanics	epm	1
effectiveplasticstrainrate	Equivalent plastic strain rate	Solid mechanics	epet	1/s
effectiveviscoplasticstrain	Equivalent viscoplastic strain	Solid mechanics	evpe	1
effectiveviscoplasticstrainrate	Equivalent viscoplastic strain rate	Solid mechanics	evpet	1/s
fluidconductance	Fluid conductance	Transport	Rb	1/s
forcedensity	Force density	Transport	f	N/m3
frequency	Frequency	General	freq	1/s
generalizedchemicalpotential	Generalized chemical potential	Transport	eta	Pa
henrysconstant	Henry’s constant	Transport	kh	J/mol
hydraulicconductivity	Hydraulic conductivity	Transport	K	m/s
initialelectrondensity	Initial electron density	Transport	neinit	1/m3
heatflux	Inward heat flux	Transport	q0	W/m2
kinematicviscosity	Kinematic viscosity	Transport	nu	m2/s
length	Length	General	l	m
levelsetvariable	Level set variable	Transport	phils	1
linecharge	Line charge	Electromagnetics	Ql	C/m
linecurrentsource	Line current source	Electromagnetics	Qjl	A/m
logelectrondensity	Log of electron density	Transport	Ne	1
logelectronenergydensity	Log of electron energy density	Transport	En	1
luminousintensity	Luminous intensity	General	li	cd
magneticfield	Magnetic field	Electromagnetics	H	A/m
magneticfluxdensity	Magnetic flux density	Electromagnetics	B	T
massfraction	Mass fraction	Transport	w	1
masssource	Mass source	Transport	Qm	kg/(m3·s)
meanelectronenergy	Mean electron energy	Transport	ebar	V
energyperamount	Molar enthalpy	Transport	h	J/mol
molarsurfaceflux	Molar flux	Transport	Ns	mol/(m·s)
molarvolume	Molar volume	Transport	Vmol	m3/mol
normalelectroncurrentdensity	Normal electron current density	Electromagnetics	nFe	A/m2
normalioncurrentdensity	Normal ion current density	Electromagnetics	nF	A/m2
numberdensity	Number density	Transport	nd	1/m3
phasefieldhelpvariable	Phase field help variable	Transport	psi	1
phasefieldvariable	Phase field variable	Transport	phipf	1
pointcurrentsource	Point current source	Electromagnetics	I0	A
powerflow	Power flow	Electromagnetics	pFlow	W/m2
practicalsalinity	Practical salinity	Acoustics	Spr	1
pressure	Pressure	General	pA	Pa
heatproduction	Production/absorption coefficient	Transport	qs	W/(m3·K)
reducedelectricfield	Reduced electric field	Transport	EN	V·m2
reduceddiffusivity	Reduced electron diffusivity	Transport	DeN	1/(m·s)
reducedmobility	Reduced electron mobility	Transport	muN	1/(V·m·s)
relativehumidity	Relative humidity	General	phi	1
salinity	Salinity	Acoustics	Sp	1
energyflux	Secondary emission energy flux	Transport	seflux	V/(m2·s)
particleflux	Secondary emission flux	Transport	sflux	1/(m2·s)
solidangle	Solid angle	General	sr	1
spacechargedensity	Space charge density	Electromagnetics	rhoq	C/m3
specificenergy	Specific energy	Transport	es	J/kg
slipvelocity	Squared slip velocity	Transport	slipvel	J/kg
surfacechargedensity	Surface charge density	Electromagnetics	rhoqs	C/m2
surfacecurrentdensity	Surface current density	Electromagnetics	Js	A/m
surfacemagneticcurrentdensity	Surface magnetic current density	Electromagnetics	Jms	V/m
surfaceconcentration	Surface site concentration	Transport	gamma	mol/m2
temperature	Temperature	General	T	K
timechangeinpressurehead	Time change in pressure head	Transport	dHpdt	m/s
turbulentdissipationrate	Turbulent dissipation rate	Transport	ep	W/kg
turbulentkinematicviscosity	Undamped turbulent kinematic viscosity	Transport	nutilde	m2/s
upsidetemperature	Upside temperature	Hidden	Tu	K
velocity	Velocity	General	u	m/s
volumefraction	Volume fraction	Transport	Vf	1
strainreferencetemperature	Volume reference temperature	General	Tempref	K
volumetricheatcapacity	Volumetric heat capacity	Transport	Cvol	J/(m3·K)