AC/DC Module Study Availability
Table 1-1: AC/DC Module Dependent Variables, Field Components, and Preset Study Availability
Physics interface
Tag
Dependent Variables
Field Components*
Preset Studies**
 
 
 
Magnetic field
Electric Field
Magnetic Potential
Current Density
Stationary
Time Dependent
Frequency Domain
Small-signal Analysis, Frequency domain
Frequency-Stationary
Frequency-Transient
Electrostatics
es
 V
 
 x  y  z
 
 
 √
√
√
√
 
 
Electrostatics, Boundary Elements
esbe
 V
 
x  y  z
 
 
√
 
 
 
 
 
Electric Currents
ec
 V
 
 x  y  z
 
 x  y  z
 √
√
√
√
 
 
Electric Currents, Shell
ecs
 V
 
 x  y  z
 
 x  y  z
 √
√
√
√
 
 
Magnetic Fields
mf
 A
 x  y  z
 x  y  z
 x  y  z
 x  y  z
 √
 √
 √
√
 
 
Magnetic Field Formulation
mfh
H
 x  y  z
 
 
 
 √
 √
 √
 √
 
 
Magnetic and Electric Fields
mef
 V, A
 x  y  z
 x  y  z
 x  y  z
 x  y  z
 √
 
 √
√
 
 
Magnetic Fields, No Currents
mfnc
 Vm
 x  y  z
 
 
 
 √
 √
 
 
 
 
Magnetic Fields, No Currents, Boundary Elements
mfncbe
Vm
x  y  z
 
 
 
√
 
 
 
 
 
Rotating Machinery, Magnetic
rmm
A, Vm
x  y
z
z
z
√
√
 
 
 
 
Electrical Circuit
cir
not applicable
 
 
 
 
√
√
√
 
 
 
Induction Heating
—
A,T, J
x  y  z
x  y  z
x  y  z
x  y  z
√
√
√
 
√
√
*These are the nonzero field components. For Cartesian coordinates, these are indexed by x, y, and z; for cylindrical coordinates, r, ϕ, and z are used.
**Custom studies are also available based on the physics interface, for example, Eigenfrequency and Eigenvalue.
 
•
Studies and Solvers in the COMSOL Multiphysics Reference Manual
•
What Can the AC/DC Module Do?
•
AC/DC Module Physics Interface Guide
•
Where Do I Access the Documentation and Application Libraries?