Home / Examples / Magnetic Analysis (Gauss, Static Analysis/Harmonic analysis) / Example 10: Inductance of Helical Coil (The Number of Turns Specified)

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.
   

• Obtain this session's project file. (Right-click and choose 'Save link as')




• Results will vary depending on Femtet version and the PC environment.

 

Analysis Space

Item	Settings
Analysis Space	3D
Model Unit	mm

 

Analysis Conditions

Item	Settings
Solver	Magnetic Analysis [Gauss]
Analysis Type	Static Analysis
Options	N/A

Model

A body of helical coil (coil) is defined as a loop coil.

Body Attributes and Materials

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

Boundary Conditions

No setting.

Results

To see the results of inductance calculation, go to the [Results] tab

 

 

 and click [Show Numerical Summary 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.