Femtet Help/Manual
 

Home / Show Results / Result Field / User-Defined Field / List of Equations for User-Defined Field

List of Equations for User-Defined Field

Electric Analysis

Electric potential [V]

COULOMB_VOLTAGE

Plating thickness [m]

COULOMB_PLATED_THICKNESS

Current density (normal component) [A/m2]

COULOMB_PLATED_J_NORMAL

Electric field [V/m]

COULOMB_ELECTRIC

Electric flux density [C/m2]

COULOMB_ELECTRIC_FLUX_DENSITY

Current density [A/m2]

COULOMB_ELECTRIC_CURRENT_DENSITY

 

If fields are calculated by gradient, divergence, and rotation, "GRAD_", "DIV_", and "ROT_" are respectively added at the head of the expression.

Magnetic analysis

Magnetic flux lines

GAUSS_MAGNETIC_FLUX_LINE

Joule loss density [W/m3]

GAUSS_JOULE_LOSS_DENSITY

Hysteresis loss density [W/m3]

GAUSS_HYSTERESIS_LOSS_DENSITY

Iron loss density [W/m3]

GAUSS_IRON_LOSS_DENSITY

Magnetic flux density [T]

GAUSS_MAGNETIC_FLUX_DENSITY

Magnetic field [A/m]

GAUSS_MAGNETIC_FIELD

Induced current density vector [A/m2]

GAUSS_INDUCED_CURRENT_DENSITY

Current density [A/m2]

GAUSS_CURRENT_DENSITY

Magnetic vector potential [Wb/m]

GAUSS_VECTOR_POTENTIAL

 

If fields are calculated by gradient, divergence, and rotation, "GRAD_", "DIV_", and "ROT_" are respectively added at the head of the expression.

Electromagnetic Analysis

Electric energy density [J/m3]

HERTZ_ELECTRIC_ENERGY

Magnetic energy density [J/m3]

HERTZ_MAGNETIC_ENERGY

SAR [W/Kg]

HERTZ_SAR

Electric field [V/m]

HERTZ_ELECTRIC_FIELD

Electric flux density [C/m2]

HERTZ_ELECTRIC_FLUX_DENSITY

Magnetic field [A/m]

HERTZ_MAGNETIC_FIELD

Magnetic flux density [Wb/m2]

HERTZ_MAGNETIC_FLUX_DENSITY

Surface current density [A/m]

HERTZ_SURFACE_CURRENT_DENSITY

Current density [A/m2]

HERTZ_CURRENT_DENSITY

Poynting vector [J/m2/s]

HERTZ_POYNTING_VECTOR

 

If fields are calculated by gradient, divergence, and rotation, "GRAD_", "DIV_", and "ROT_" are respectively added at the head of the expression.

Thermal Analysis

Temperature [deg]

WATT_TEMPERATURE

Radiosity [W/m2]

WATT_RADIOSITY

Coefficient of Heat transfer of convection [W/m2/deg]

WATT_FLUID_HEAT_TRANSFER

Heat density [W/m3]

WATT_HEAT_DENSITY

Turbulent thermal conductivity [W/m/deg]

WATT_TURBULENT_THERMAL_CONDUCTIVITY

Heat flux [W/m2]

WATT_HEAT_CURRENT

Temperature gradient [deg/m]

WATT_TEMPERATURE_GRADIENT

Heat flux on wall face [W/m2]

WATT_WALL_HEAT_FLUX

Residual [W]

WATT_RESIDUAL

 

If fields are calculated by gradient, divergence, and rotation, "GRAD_", "DIV_", and "ROT_" are respectively added at the head of the expression.

 

Stress Analysis

Equivalent elastic strain

GALILEO_EFF_ELASTIC_STRAIN

Equivalent plastic strain

GALILEO_EFF_PLASTIC_STRAIN

Equivalent creep strain

GALILEO_EFF_CREEP_STRAIN

Accumulated equivalent plastic strain

GALILEO_ACM_EFF_PLASTIC_STRAIN

Accumulated equivalent creep strain

GALILEO_ACM_EFF_CREEP_STRAIN

Accumulated equivalent inelastic strain

GALILEO_ACM_EFF_NON_ELASTIC_STRAIN

Strain energy density [J/m3]

GALILEO_STRAIN_ENERGY

Displacement [m]

GALILEO_DISPLACEMENT

Velocity [m/s]

GALILEO_VELOCITY

Acceleration [m/s2]

GALILEO_ACCELERATION

Coordinates after deformation [m]

GALILEO_DEFORMED_COORDINATE

Stress [Pa]

GALILEO_STRESS

Strain (total)

GALILEO_STRAIN

Initial strain (thermal)

GALILEO_STRAIN_IT

Initial strain (non-thermal)

GALILEO_STRAIN_INT

Elastic strain

GALILEO_STRAIN_E

Plastic strain

GALILEO_STRAIN_P

Creep strain

GALILEO_STRAIN_C

Equivalent inelastic strain magnitude of element

GALILEOLIFE_AMP_EFF_NON_ELASTIC_STRAIN

Remaining life of element [cycle]

GALILEOLIFE_REMAIN_LIFE

Initial stress component of displacement[m]

GALILEO_STATIC_DISPLACEMENT

Initial stress component of strain (total)

GALILEO_STATIC_STRAIN

Initial stress component of mechanical stress [Pa]

GALILEO_STATIC_STRESS

Volume change ratio

GALILEO_VOLUME_CHANGE_RATE

 

If fields are calculated by gradient, divergence, and rotation, "GRAD_", "DIV_", and "ROT_" are respectively added at the head of the expression.

 

Piezoelectric Analysis

Electric potential [V]

RAYLEIGH_VOLTAGE

Displacement [m]

RAYLEIGH_DISPLACEMENT

Electric field [V/m]

RAYLEIGH_ELECTRIC_FIELD

Electric flux density [C/m2]

RAYLEIGH_ELECTRIC_FLUX_DENSITY

Coordinates after deformation [m]

RAYLEIGH_DEFORMED_COORDINATE

Stress [Pa]

RAYLEIGH_STRESS

Strain (total)

RAYLEIGH_STRAIN

Initial strain (thermal)

RAYLEIGH_STRAIN_IT

Initial strain (non-thermal)

RAYLEIGH_STRAIN_INT

Elastic strain

RAYLEIGH_STRAIN_E

Initial stress component of displacement[m]

RAYLEIGH_STATIC_DISPLACEMENT

Initial stress component of strain (total)

RAYLEIGH_STATIC_STRAIN

Initial stress component of mechanical stress [Pa]

RAYLEIGH_STATIC_STRESS

 

If fields are calculated by gradient, divergence, and rotation, "GRAD_", "DIV_", and "ROT_" are respectively added at the head of the expression.

 

Fluid Analysis

Pressure (static pressure) [Pa]

BERNOULLI_PRESSURE

Pressure (total pressure) [Pa]

BERNOULLI_TOTAL_PRESSURE

Courant Number

BERNOULLI_COURANT_NUMBER

K_Turbulent flow energy [m2/m2]

BERNOULLI_K

epsilon_energy dissipation rate [m2/s3]

BERNOULLI_EPS

Energy generation rate [m2/s3]

BERNOULLI_GENERAT ION

Coefficient of Turbulent Viscosity [Pa*s]

BERNOULLI_TURBULENT_VISCOSITY

Turbulent Viscosity Ratio

BERNOULLI_TURBULENT_VISCOSITY_RATIO

y_height of 1st layer mesh of wall face [m]

BERNOULLI_Y

y_dimensionless height of 1st layer mesh of wall face [m]

BERNOULLI_YPLUS

Continuity residual [m3/s]

BERNOULLI_CONTINUITY_RESIDUAL

K residual [kg*m2/s3]

BERNOULLI_K_RESIDUAL

ε residual [kg・m2/s4]

BERNOULLI_EPS_RESIDUAL

y_height from wall face [m]

BERNOULLI_Y_FROM_WALL

Rey_Reynolds number of wall face

BERMPILLI_REY

Boundary layer domain

BERNOULLI_BOUNDARY_LAYER

Non-flow path domain

BERNOULLI_STAGNATION

Flow velocity [m/s]

BERNOULLI_VELOCITY

Vorticity [/s]

BERNOULLI_VORTICITY

Buoyancy [N/m3]

BERNOULLI_BUOYANT_FORCE

Wall shear stress [Pa]

BERNOULLI_WALL_SHEAR_STRESS

Flow velocity residual [N]

BERNOULLI_VELOCISTY_RESIDUAL

 

If fields are calculated by gradient, divergence, and rotation, "GRAD_", "DIV_", and "ROT_" are respectively added at the head of the expression.

Diffusion Analysis of Fluid Solver

Value
Molar Concentration
Mass Concentration

Mole Fraction

Mole Fraction [%]

Mass Fraction

Mass Fraction [%]

Low Concentration [ppm]

PASSIVESCALAR_POTENTIAL

Coefficient of Turbulent Diffusion [m2/s]

PASSIVESCALAR_TURBULENT_DIFFUSIVITY

Gradient [1/m]

Molar Concentration Gradient [kg/m4]

Mole Fraction Gradient [/m]

Mole Fraction Gradient [%/m]

Mass Fraction Gradient [/m]

Mass Fraction Gradient [%/m]

Low Concentration Gradient [ppm/m]

PASSIVESCALAR_GRADIENT

Flux [m/s]

Molar Concentration Flux [mol/m2/s]

Mass Concentration Flux [kg/m2/s]

Mole Fraction Flux [m/s]

Mole Fraction Flux [% m/s]

Mass Fraction Flux [m/s]

Mass Fraction Flux [% m/s]

Low Concentration Flux [ppm*m/s]

PASSIVESCALAR_FLUX

Air Age

PASSIVESCALAR_AGE

Air Residual Lifetime

PASSIVESCALAR_LIFE

Air Lifetime

PASSIVESCALAR_SPAN

Age of Air [Normalized]

PASSIVESCALAR_AGE_NORMALIZE

Residual Lifetime of Air [Normalized]

PASSIVESCALAR_LIFE_NORMALIZE

Lifetime of Air [Normalized]

PASSIVESCALAR_SPAN_NORMALIZE

 

If fields are calculated by gradient, divergence, and rotation, "GRAD_", "DIV_", and "ROT_" are respectively added at the head of the expression.

Acoustic Analysis

Sound pressure [Pa]

MACH_PRESSURE

Sound pressure level [dB]

MACH_PRESSURE_LEVEL

Particle velocity [m/s]

MACH_PARTICLE_VELOCITY

Acoustic intensity [W/m2]

MACH_SOUND_INTENSITY

A-weighted sound pressure level [dBA]

MACH_PRESSURE_LEVEL_A

 

If fields are calculated by gradient, divergence, and rotation, "GRAD_", "DIV_", and "ROT_" are respectively added at the head of the expression.

Simple Fluid Analysis

Velocity potential [m2/s]

PASCAL_VELOCITY_POTENTIAL

Flow velocity [m/s]

PASCAL_VELOCITY

 

If fields are calculated by gradient, divergence, and rotation, "GRAD_", "DIV_", and "ROT_" are respectively added at the head of the expression.

Mesh

Quality of mesh (contour)

PYTHAGORAS_MESH_QUALITY_POT

Factor for natural convection, C

PYTHAGORAS_MESH_NATURAL_C_POT

Characteristic length of natural convection, L

PYTHAGORAS_MESH_NATURAL_L_POT

Path length of forced convection (total)

PYTHAGORAS_MESH_FORCED_L1_POT

Path length of forced convection (heat source)

PYTHAGORAS_MESH_FORCED_L2_POT

Quality of mesh (vector)

PYTHAGORAS_MESH_QUALITY_VEC

 

If fields are calculated by gradient, divergence, and rotation, "GRAD_", "DIV_", and "ROT_" are respectively added at the head of the expression.

Miscellaneous

Mode

MODE

Vector X component

VEC_X

Vector Y component

VEC_Y

Vector Z component

VEC_Z

Vector length

VEC_LENGTH

Tensor XX component

TEN_XX

Tensor YY component

TEN_YY

Tensor ZZ component

TEN_ZZ

Tensor YZ component

TEN_YZ

Tensor ZX component

TEN_ZX

Tensor XY component

TEN_XY

Tensor ZY component

TEN_ZY

Tensor XZ component

TEN_XZ

Tensor YX component

TEN_YX

Tensor YZ component [absolute value]

TEN_YZ_ABS

Tensor Theta ZX component [absolute value]

TEN_ZX_ABS

Tensor XY component [absolute value]

TEN_XY_ABS

Tensor principal value 1

TEN_P1

Tensor principal value 2

TEN_P2

Tensor principal value 3

TEN_P3

Tensor XY principal value 1

TEN_XY_P1

Tensor XY principal value 2

TEN_XY_P2

Tensor XZ principal value 1

TEN_XZ_P1

Tensor XZ principal value 2

TEN_XZ_P2

Tensor volumetric value *1

TEN_VOLUME

Tensor relative value *2

TEN_EQUIV

Tensor shearing value *3

TEN_R

 

Equations will differ depending on the tensors. See Stress Type and Strain Type for the details.

*1 Indicates hydrostatic pressure/volumetric strain for stress tensor/strain tensor respectively.

*2 Indicates von Mises equivalent stress/volumetric strain for stress tensor/strain tensor respectively.

*3 Indicates maximum shearing stress/maximum shearing strain for stress tensor/strain tensor respectively.