11.8.1 Local Grids

Figure 11.8.1-1 Child and local grids.

Key characteristics and differences between local grids and child grids:

• Parent-child grid relationships support multi-scale workflows in which more than one grid covers the same volume in space.
• In contrast, local grids are used to replace a portion of a parent grid by its child. Child grids that are listed as part of a local grid set are defined as a local grid.
• Multiple local grid sets are supported, and each set may include multiple local grids.

• Time-dependent activation. RESQML provides optional time-dependent activation and deactivation of local grids. Unless otherwise indicated, a specified local grid replaces a portion of a parent grid. However, if the optional activation object is present, then local grids do not replace a portion of the parent until activated. The state of the local grid may be toggled multiple times between inactive and active.