Create an Area Rake and Streamline

  1. Do one of the following:
    • From the Create tools, select Create > CFD.Then, from the Streamlines panel, click Add
    • Right-click in the Results Browser and select Create > Streamline from the context menu.
    A new rake is added to the panel list. The newly added rake is automatically labeled, and is added to the bottom of the list.
    Tip: You can rename the rake using the right-click context menu.
  2. From the Streamlines panel, select Area from the Rake type drop-down menu.
    An Area rake is defined by the surface/area of a component collector.
  3. Select the 2D part/component which will be used to define the rake.
    • Pick a 2D component from the model in the modeling window or in the Results Browser.
    • Click the Component input collector and select By ID to select your desired entity.
  4. Select the integration mode for the rake from the Integration mode drop-down menu.
    Option Description
    Downstream Integration is done following the velocity field direction.
    Upstream Integration is done upstream, or opposite, to the velocity field direction.
    Both Integration is done both downstream and upstream.
  5. Activate the Evenly distributed check box to evenly distribute the seeds in an Area rake by specifying the number of rows and columns of seeds in a local system.
  6. Enter the number of desired rows of seeds in the Number of rows text box.
    Attention: The Evenly distributed option must be activated in order to enable this option for Area rakes.
  7. Enter the number of desired columns of seeds in the Number of columns text box.
    Attention: The Evenly distributed option must be activated in order to enable this option for Area rakes.
  8. Optional: Specify the number of seeds in the Area rake (distributed on the surface of the 2D part/component) in the Number of seeds text box.
    Restriction: The Evenly distributed option must not be activated in order to enable this option for Area rakes.
  9. From the Streamlines tab, select the vector field to be used for streamline creation (typically the velocity field) from the Source drop-down menu.
    Note: You can also click Advanced to open the dialog which allows you to change a number of parameters that control how the streamlines are generated.
    In addition, the Tracers tab can also be used to create and animate streamlines with particles traveling along the streamlines:
    1. Click on the Tracers tab
    2. Enter your desired options for tracer designs, coloring options, and injection modes.
    3. Click on the Create button to start the animation.
  10. Enter/select your desired Display options.
    Option Description
    Auto-generate Activate the check box to automatically generate streamlines upon release of the mouse button, if the rake remains at least partly in the fluid domain and the stream lines existed prior to changing the rake.

    If the streamline is contoured prior to changing the rake, the contour will be automatically regenerated also.
    Draw as tube Active this option to draw the streamlines as tubes instead of lines.

    The streamlines will appear to have a larger diameter (for the same streamline size) when this option is activated.
    Streamline size

    OR

    Seed marker size

    		 Enter the relative scale for the streamline thickness. The value must be a positive whole number.

    OR

    Enter the size of the seed nodes which are being used as the starting point for the streamline generation.
    Color by Select Seed from the drop-down menu to use the number specified in the Number of colors text box to distinguish streamlines.
    Note: This option is disabled if a contour is applied to the model. HyperView supports streamline contouring for nodal results only (elemental results are not supported).
    Tip: To remove the contour, and enable the Color by option, go to the Contour panel and click Clear Contour.
    Number of colors Enter the number of distinct colors (1-14) to use when the Color by drop-down menu is set to Seed.
  11. Click the Create Streamlines button to create and view the streamlines.
  12. Optional: Use the Graphical Manipulator to rotate, translate, or modify the scale of the rake.
    Restriction: Area rakes without the Evenly distributed option activated cannot be manipulated.