Home / Examples / Coupled Analysis / Magnetic-Thermal Analysis [Gauss/Watt] / Example 1: Heating Caused by Applied Current

Example 1: Heating Caused by Applied Current

General

This is an example of the magnetic-thermal coupled analysis.
The joule loss due to the applied current and the resulting heating are solved.
The vectors of the magnetic field and the temperature distribution by the heating are viewed.
Unless specified in the list below, the default conditions will be applied.

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] Thermal Analysis [Watt]
Analysis Type	Magnetic Analysis: Static Analysis Thermal Analysis: Steady-state Analysis
Options	N/A

The Thermal Load tab is set as follows.

Tab	Setting Item	Settings
Thermal Load	Reference Temperature	25 [deg]

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

A helical solid body Coil (coil) is defined.

[Create ambient air automatically] is selected by default.

The automatically created ambient air is analyzed only in the magnetic analysis, not in the thermal analysis.

Body Attributes and Materials

Finer meshes are set on the area where the magnetic field changes drastically.

Body Number/Type	Body Attribute Name	Material Name	Mesh Size
0/Solid	Coil	008_Cu *	3

* 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

Current: 100 [A]

Turns: 1 [Turns]

Boundary Conditions

"Natural convection (automatic coefficient calculation)" is set for the outer boundary condition (in the thermal analysis, the outer boundary condition is surrounding the coil).

Boundary Condition Name/Topology

Tab

Boundary Condition Type

Settings

Outer Boundary Condition *

Thermal

Heat Transfer: Convection

Natural Convection (Automatic Coefficient Calculation)

Ambient Temperature: 25 [deg]

To set Outer Boundary Condition, go to the [Model] tab