CAE Software【Femtet】Murata Software Co., Ltd.
Example12 Inductances of Two Loop Coils
General
-
Two united helical coils are solved.
-
The coupling coefficient, the vectors of the magnetic field and the magnetic flux density are solved.
-
Unless specified in the list below, the default conditions will be applied.
Analysis Space
|
Item |
Settings |
|
Analysis Space |
3D |
|
Model unit |
mm |
Analysis Conditions
|
Item |
Settings |
|
Solvers |
Magnetic Field Analysis [Gauss] |
|
Analysis Type |
Static analysis |
|
Options |
N/A |
Set the Mesh Tab as follows.
|
Tab |
Setting Item |
Settings |
|
Mesh |
Meshing Setup |
Automatically set the general mesh size: Deselect General mesh size: 2[mm] |
Model
Two helical solid body coils (Coil1, Coil2) are defined.
Body Attributes and Materials
|
Body Number/Type |
Body Attribute Name |
Material Name |
|
0/Solid |
Coil |
008_Cu * |
|
3/Solid |
Coil2 |
008_Cu * |
* Available from the Material DB
Body attribute is set up as follows to apply current to the coil.
|
Body Attribute Name |
Tab |
Settings |
|
Coil |
Current |
Waveform: Constant Current: 1[A] Turns: 1[Turns] Direction: Specify Inflow/Outflow Faces (In the Air Box): Select inflow face and outflow face. |
|
Coli2 |
Current |
Waveform: Constant Current: 1[A] Turns: 1[Turns] Direction: Specify Inflow/Outflow Faces (In the Air Box): Select inflow face and outflow face. |
Boundary Conditions
No setting.
Results
To see the results of inductance calculation, go to the [Results] tab
click [Table] 
.
The vectors of the magnetic flux density are shown below.
The vectors of the magnetic field on YZ plane are shown below.
The strong magnetic field is generated inside coils in the negative Z direction.
The vectors of the current density are shown below.
The current is flowing as set for the coil.