Home / Examples / Magnetic Analysis (Gauss, Static Analysis/Harmonic analysis) / Example 10: Inductance of Helical Coil (The Number of Turns Specified)
The inductance of a helical coil is solved.
In the analysis of the coil with a high number of turns such as 100 or 1000 turns,
a model with a specified number of turns (bulk coil) will be effective.
The vectors of the magnetic field and the magnetic flux density are also solved.
Unless specified in the list below, the default conditions will be applied.
Results will vary depending on Femtet version and the PC environment.
Item |
Settings |
Analysis Space |
3D |
Model Unit |
mm |
Item |
Settings |
Solver |
Magnetic Analysis [Gauss] |
Analysis Type |
Static Analysis |
Options |
N/A |
A body of helical coil (coil) is defined as a loop coil.
Body Number/Type |
Body Attribute Name |
Material Name |
1/Solid |
Coil |
008_Cu * |
* Available from the material DB
Body attribute is set up as follows to apply current to the coil with 100 turns.
Body Attribute Name |
Tab |
Settings |
Coil |
Current |
Waveform: Constant Current: 1 [A] Turns: 100 [Turns] Direction: Loop Coil/Magnetic Field Direction: Magnetic Field Vector: X=0, Y=0, Z=1 |
No setting.
To see the results of inductance calculation, go to the [Results] tab
and click [Table] 
.
The vectors of the magnetic field are shown below.
The vectors of the magnetic field on YZ plane are shown below.
The magnetic field inside the coil is directing the Z direction.
The vectors of the current density are shown below.
The current is flowing as set for the coil.