User's guide of Proceessing Modflow 5.0

Processing Modflow 185
small. Click the Stop button, if the particle tracking simulation appears too slow.
Run particles forward step by step
Click this button to move particles forward a single particle tracking step. The particle tracking
step length is defined in the Particle Tracking (Time) Properties dialog box. See sec. 4.3 for
details.
Run particles forward
Click this button to execute forward particle tracking for a specified time length. The time length
is the product of the number of particle tracking steps and the particle tracking step length given
in the Particle Tracking (Time) Properties dialog box. See sec. 4.3 for details.
4.3 PMPATH Options Menu
Environment...
The Environment Options dialog box (Fig. 4.7) allows to modify the appearance of the model.
The available settings are grouped under 4 tabs; namely Appearance, Cross Sections, Velocity
vectors and Contours. These tabs are described below.
< Appearance allows to change the visibility and appearance color of each simulated
component. A simulated component is visible if the corresponding Visibility check box is
checked. To select a new color, click on the colored cell (a button appears), then click on
the button and select a color from a Color dialog box.
< Cross Sections
- To display the cross-section windows, check the Visible check box.
- To display the model grid, check the Show grid check box.
- To display the groundwater surface (or the hydraulic heads of the highest active cells) on
the cross-sections, check the Groundwater surface (Potential) check box.
- Use Exaggeration (scaling factor for the height) to change the appearance height of the
cross-sections. A larger exaggeration value lets you see the projection of the pathlines on
the cross-section windows in greater details. The exaggeration value can be ranged from
0.01 to 1000. If the model thickness or the exaggeration value is too small such that the
appearance size on the screen is smaller than 1 pixel, PMPATH will turn off the display
4.3 PMPATH Options Menu