Computing convection

The computation process is the same for pseudo-stationary and time-dependent computation.

  1. Select the region of the sample in the drawing.

  2. Select Settings > Physical Phenomena.

    The Physical Phenomena dialog opens and indicates 1 region(s) selected.

  3. In the Physical Phenomena dialog CrysMAS offers all variables which can be computed with the current settings, if temperature has been computed already. You have to select the variables you want to be computed in this dialog!

    In this case Convection and Azimuthal Flow can be selected, but we only want to compute Convection.

    Set Convection to Yes by clicking on the associated box, if it is not preselected.

  4. Click on Apply and Close.

  5. Select Convection from the variable group list box in the tool bar.

    The default variable for visualizing results is VelocityU.

  6. Select Computation > Start Computation.


    Click on the Start computation button   in the tool bar.

    You can follow the solving process in the status bar. When computing is finished, you can visualize the results.

    If the solving takes longer than you expected, you can stop computation by clicking on the Stop computation button  .

  7. Select Convection from the Variable group list box and VelocityV from the variable list box.

  8. Select Visualization > Show and click on the box next to Legend.

  9. Click on the Show/hide scalar field button   to display the scalar field.

  10. Click on the Show/hide vector field button   to display the vector field.

    Visualizing Velocity V, upper right corner of the crucible 

    Figure 61. Visualizing Velocity V, upper right corner of the crucible

  11. Click on the Zoom out button   to reset the furnace to its original size.

  12. Click on the Show/hide scalar field button   and on the Show/hide vector field button to turn off the display of both.

  13. Select File > Close to close the file.