EMUNIT

EMUNIT, Lab, VALUE
Specifies the system of units for magnetic field problems.

Valid Products: Pro | Premium | Enterprise | PrepPost | Solver | AS add-on

Lab

Label specifying the type of units:

MKS

 — 

Rationalized MKS system of units (meters, amperes, henries, webers, etc.). Free-space permeability is set to 4 πe-7 henries/meter. Free-space permittivity is set to 8.85 e-12 F/m.

MUZRO

 — 

User defined system of units. Free-space permeability is set to the value input for VALUE. Other units must correspond to the permeability units. Relative permeability may be altered to absolute values.

EPZRO

 — 

User defined system of units. Free-space permittivity is set to the value input for VALUE. Other units must correspond to the permittivity units.

VALUE

User value of free-space permeability (defaults to 1) if Lab = MUZRO, or free-space permittivity (defaults to 1) if Lab = EPZRO.

Command Default

Rationalized MKS system of units (meters, amperes, henries, webers, etc.). Free-space permeability is set to 4 πe-7 Henries/meter, free-space permittivity is set to 8.85e-12 Farads/meter.

Notes

Specifies the system of units to be used for electric and magnetic field problems. The free-space permeability and permittivity values may be set as desired. These values are used with the relative property values (MP) to establish absolute property values.

Note:  If the magnetic source field strength (Hs) has already been calculated (BIOT), switching EMUNIT will not change the values.

For micro-electromechanical systems (MEMS), where dimensions are on the order of microns, see the conversion factors in System of Units in the Coupled-Field Analysis Guide.

This command is also valid in SOLUTION.

Menu Paths

Main Menu>Preprocessor>Loads>Load Step Opts>Other>Change Mat Props>Electromag Units
Main Menu>Preprocessor>Material Props>Electromag Units
Main Menu>Solution>Load Step Opts>Other>Change Mat Props>Electromag Units