Specifying settings and parameters for computing rotating magnetic fields

Prerequisites

Temperature has been computed. The computation is executed always on the unstructured mesh. If the structured mesh is generated in the region of interest, than the electric potential and Lorentz force will be computed also on the unstructured mesh covered by the structured mesh layer. The results for convection will be transferred automatically from the unstructured mesh to the structured one, where the melt convection has to be computed.

  1. Select File > Open.

  2. Open the file rotating.crys.

  3. Select Settings > Materials.

  4. Select the material GaAsSolid.

  5. You have to define the electrical conductivity for the sample material.

    Type 1.2e6 for Electrical conductivity into the Phase 0 and Phase 1 columns.

  6. Click on Apply and Close.

  7. Select Settings > Physical Phenomena.

  8. Select the region of the sample. (No. 10, GaAsSolid).

  9. CrysMAS can compute all related variables simultaneously. Temperature is automatically active.

    Check the boxes next to Convection, Azimuthal Flow, Lorentz Forces and Electrical Potential.

  10. Click on Apply and Close.

  11. Select Computation > Process parameters > Electrical Potential.

    The Electrical Potential dialog opens.

    Process parameters dialog, Magnetic Fields tab 

    Figure 80. Process parameters dialog, Magnetic Fields tab

  12. All 4 parameters for rotating magnetic fields have to be specified.

    Type the following values in the associated lines: Magnetic induction in Tesla: 0.001, Sample radius in m: 0.003, Pole pairs: 1, Rotating frequency in Hz: 400.

  13. Click on Apply and Close.

  14. Select Computation > Convection parameters > Ramps tab.

  15. If you start a complex computation like this, running ramps is useful.

    You may leave the ramp defaults or change them.

    Click on the boxes next to run a capacity ramp and run a viscosity ramp.

  16. Click on Apply and Close.

  17. Click on the Start computation button  .

    After the computation is finished you can visualize the distribution of lorentz-p in the variable group Electrical Potential, for instance.

    lorentz-p 

    Figure 81. lorentz-p

Related Procedures

Process parameters: Rotating magnetic field

Related Dialogs

Magnetic fields