Visualizing the Wave Pattern

You can plot the elevation of the free water surface to get a good visual representation of the wake that the hull produces as it moves through the water.

To create a contour plot of the elevation of the water surface:

  1. Right-click the Scenes node and select New > Scalar.
  2. Rename Scalar Scene 1 as Waves.
  3. Create an iso-surface for the volume fraction of water at a value of 0.5:
    A value of 0.5 for the water volume fraction means that a computational cell is filled with 50% of water and, consequently, 50% of air. Therefore, this value gives the position of the water-air-interface corresponding to the free surface.
    1. Right-click the Derived Parts node and select New > Isosurface...
      The Create Isosurface dialog appears.
    2. In the Input Parts group box, select Regions > Virtual Towing Tank.
    3. In the Scalar group box, select Volume Fraction > Volume Fraction of Water.
    4. Set Isovalue to 0.5.
    5. Select No Displayer.
    6. Click Create and Close.
  4. Click Scene/Plot.
  5. Select the Scalar 1 node.
  6. In the Scalar 1 - Properties window:
    1. Set Contour Style to Smooth Filled + Lines.
    2. Set Transform to Tank.Symmetry 1.
  7. Select the Scalar 1 > Parts node and set Parts to Derived Parts > Isosurface. Click OK.
  8. Select the Scalar 1 > Scalar Field node and set Function to Position > Laboratory > Z.
  9. Select the Outline 1 node and de-activate Outline.
  10. Select the Outline 1 > Parts node.
  11. In the Parts - Properties window:
    1. Click (Custom Editor) next to Parts.
    2. Expand Regions > Virtual Towing Tank > Boundaries and select all boundaries with the prefix KCS.
    3. Expand Derived Parts and select Isosurface.
    4. Click OK.
  12. Click anywhere in the scene display area and then press t on your keyboard to obtain a top view of the ship and the wave pattern.
  13. Return to Simulation.