Introduction of 2D Transient Magnetic

Presentation

The Transient Magnetic application allows the study of the phenomena created by a time variable magnetic field. The magnetic field is related to the presence of variable currents (and possibly permanent magnets).

This application allows the consideration of induced currents in conducting regions (Eddy currents). It allows the consideration of skin effects and proximity effects in the conducting regions, too.

Use

The Transient Magnetic application can be used for different types of devices. We are principally interested in the study of devices supplied by current of varied shape (echelon, trapezoid…) or by transient phenomena (linked to current variation caused by powering, short circuits…)

The Transient Magnetic application is principally used with Circuit coupling and/or Kinematics coupling for rotating machines, transformers, etc. study in transient state.

Skewed modelization

For a 2D solution, the user can apply the Skewed Motoroption.

Workflow

A graphic view of the Transient Magnetic 2D workflow with functionalities possibles is presented below.

All functions are available in the different ribbon bars Geometry, Mesh, Analysis, ...

The content of each ribbon is adapted depending on the active solution.

Attention: In this SimLab version it is mandatory to define a global unit system before creating a Transient 2D Solution. Without a global unit system, the solving will not be carried out (limitation in the Flux solver).

Activate
Choose the wanted system

For more details on Unit System, please refer to the main page Unit System.

Correspondence between Flux and SIMLAB for 2D Transient Magnetics


Categories	SimLab	Flux
Geometry	Vertex	Point
	Edge	Line
	Face	Face
	Coordinate	Coordinate systems
	Sketch variables	Geometric parameters
	Move	Transformation
Domain	Infinite Box (automatic)	Infinite Box
	Symmetry	Symmetry
	Periodicity	Periodicity
Mesh	Mesh Controls	Aided Mesh
		Mesh point, line
		Relaxation line, face
Physics	Material	Material
	Not implemented	Point Region
	Not implemented	Line Region
	Loads and Constraints	Face Region
	Motion	Mechanical set
	Imposed Current Coil Loads and Constraints	Circuit component - Coil conductor
	Solid Conductor Loads and Constraints	Circuit component - Solid conductor
	Circuit Designer Circuit Catalog	Circuit editor
	Magnet Loads and Constraints	Magnetic non conducting region + Orientation of the magnet + Demagnetization
	Sheet Lamination Loads and Constraints	Laminated non conducting region
	Solution settings	Solution scenario

Main Magnetic transient 2D Limitations / Advices

Some functionalities of FLUX for a Transient Magnetic Application are not available in this first version of SIMLAB:

It’s mandatory to define a unit system before defining a Magnetic Transient 2D solution.
Physical parametric calculations are possible using the new parameter manager.
All FLUX models of materials are not available in SIMLAB.

Note: For more details, consult the dedicated page for the transient magnetic 2D solution: Material (for MT2D solution).
It is possible to Export and open in Flux at any time, as long as the bodies are meshed and assigned to the solution.

Use the right click on the Solution to open the contextual menu, and click on Export and open in Flux.

→ The SimLab Database *.slb is converted into a project *.FLU.

→ This project *.FLU is created in the selected working directory and Flux is automatically launched and this project *.FLU is opened.

→ Then you can use this project in Flux.

Note: This conversion can be useful to use physical Flux models that are not yet implemented in SimLab (material model, non meshed coil, magnetic cut, …).