Defining the Magnetic Permeability Using a B-H Curve

The Table (B,H) method allows you to define the magnetic permeability of a material by providing a table of B,H values.

The values in the table must meet certain requirements—for example, the values of each (B,H) pair must be larger than the values of the previous (B,H) pair, giving a monotonically increasing B - H curve. For more information on the table format and requirements, see Using Table(B,H) Method for Permeability.

To define the permeability using the Table (B,H) method:

  1. Expand the relevant [physics continuum] > Models > [Material Model] > [Material] > Material Properties node.
  2. Select the Magnetic Permeability node and set Method to Table (B,H).
    For more information on the methods available for different materials, see Defining the Magnetic Permeability.
  3. Import the B,H table into Simcenter STAR-CCM+ using one of the following methods:
    • import a B,H table as a file table under the Tools > Tables node
    • import a B , H , μ table into the Standard material database
    • use a material from the Electromagnetic material database (see Electromagnetic Material Database). If present, predefined B-H tables are automatically imported.

    To import the table into the Standard material database:

    1. Make sure that the column headings are:
      • MagneticField
      • MagneticFluxDensity
      • Permeability

      The heading text is not case-sensitive.

    2. Under Tools > Material Databases, right-click the database material node and select New Database Properties...
    3. In the Select Database Properties dialog, activate Permeability - Table (B, H, mu), then click OK.


      The new Permeability node appears under the material node.
    4. Right-click the Permeability > Table(B,H,mu) > Material Database Table node and select Import Material Table from a file.
    5. In the Open dialog, select the appropriate table file and click Open.
      The selected table is loaded into the material database.
  4. Use the imported table to define μ:
    1. Depending on the type of material that you are modeling, select either of the following nodes:
      Type of Solid Table(B,H) Node
      Isotropic [physics continuum] > Models > [Solid] > [Material] > Material Properties > Magnetic Permeability > Table(B,H) > Tabular Data
      Anisotropic [Region] > Physics Values > Anisotropic Permeability > Table(B,H) Principal Tensor > [Component] > Table(B,H)
    2. Set the Input table to the table containing the B-H data.
    3. Specify the columns that represent the values for the magnetic flux density B and the magnetic field H using the properties, Table: Magnetic Flux Density and Table: Magnetic Field.