Thermal Coupling

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EMS comes with an integrated thermal steady-state and transient solver.  EMS automatically computes the joule, eddy, and core losses and feeds them into the thermal solver.  You may readily add non-electromagnetic heat loadings by applying volume heat, heat flux, or simply fixed temperature. Considering the environment conditions such as convection and radiation, EMS thermal steady-state and transient computes the temperature, temperature gradient, and heat flux and saves them to "Thermal Results" folder.   Since the thermal solver is integrated in the electromagnetic solvers, it uses the same model and mesh. There is no need to export and import any data.


The Thermal module is primarily used for computing temperature distribution due to electromagnetic losses. It has many practical applications, including:

  • Busbars
  • Transformers,
  • Induction heating,
  • Motors,
  • Electronics,
  • Fuses,
  • High voltage and high-power equipment
  • Cables


After running a study with the thermal solution option on, you can view the following thermal quantities:


  • Temperature distribution 

Temperature Gradient:

  • TGx: Temperature gradient in the x direction
  • TGy: Temperature gradient in the y direction
  • TGz: Temperature gradient in the z direction
  • TGr: Resultant Temperature gradient 

Heat Flux :

  • FLx: Heat Flux in the x direction
  • FLy: Heat Flux in the y direction
  • FLz: Heat Flux in the z direction
  • FLr: Heat Flux gradient.

x, y, and z refer to the global coordinate system.

Examples of design issues

The Thermal module can help study many devices and address numerous phenomena.

Below is just a partial list:

  • How much heat does apower dissipation cause?
  • How much temperature rise does this lead to?
  • Is a heat sink needed?
  • Is an active cooling required?
  • Where are the hotspots in my design?
  • What is the temperature distribution throughout the model?
  • Do you have fire safety and security concerns?
  • What design changes are required for better thermal management?
  • Optimize crucible for induction heating system
  • Design of attractive induction cookers.