You can adjust the display of streamlines in the current viewport by changing their thickness, adding directional arrows that indicate the direction of fluid flow, and by customizing the number of direction arrows when their display is enabled. Abaqus/CAE displays directional arrows using the uniform color selected in the Color options; for more information, see “Customizing stream colors,” Section 74.4.1. Arrow sizes change as you increase or decrease streamline thickness.
To customize streamline thickness and arrows:
Locate the Style options.
Select Options
Stream from the main menu bar in the Visualization module. The Style options appear at the bottom of the dialog box.
Drag the Line thickness slider to make the streamlines thinner or thicker.
Toggle on Uniform thickness across streams to display all streamlines in the current viewport with a uniform thickness.
Toggle on Show direction arrow to display directional arrows along the streamlines.
Drag the Approx. number of arrows on each streamline slider to increase or decrease the number of directional arrows displayed on each streamline.
Click OK to implement your changes and to close the Stream Plot Options dialog box.