Sample Problem: Time-Dependent Z-Pinch Hohlraum

Setting Up the Grid: Cylindrical Pinch with Time-Dependent Radius

To set up the cylindrical pinch:

• Select Target | Add Object (or push the Add Object tool button).
• Select "Cylinder" for the target component type.
• Set the object name to "Pinch".
• In the Position tab of the Object Parameters Dialog:
• For the Reference Coordinate System, use "Target Chamber".
• Use the default object position: r = (0,0,0).
• Use the default orientation angles (all angles zero).
• In the Size/Gridding tab of the Object Parameters Dialog:
  • Set the length to 1.0 cm.
  • Set surface normals out.
  • Use 7 grid points along the Z-axis.
  • Set the number of azimuthal grid points to 12 (30 degrees per node).
  • For radius, select variable. Press the Table button. Read in radius vs. time data from file.
    • Select File | Import Data.
    • Choose the file "radius_vs_time_A.dat" (contained in the examples folder).
    • Use the default column selection settings: time in column 1, radius in column 2. Press OK.
    • Press OK in the table dialog.
• Select "OK" in the Object Parameters Dialog.
• The pinch appears in the graphics window. To adjust the view, see User Interface Viewing Controls.