Often the a model domain is too complex to create a single grid that accurately represents the area. Therefore, the user may have to create several grids and connect them using the Merge Two Grids tool.
To merge two grids, open the user must have the initial grid open. The user should and then create a new layer for a new set of splines. These splines should extend from a location adjacent to the first grid and outline the new domain. Draw the farthest spline first, followed by the connection to the first grid and then the sides. When drawing the spline parallel to the first grid, ensure it is close to the edge. The user may then generate Generate the grid making sure while ensuring that the number of cells in the I or J-axis of the new grid matches the number of cells connecting it to the first grid.
Suppose there are two grids (red one and blue one) as shown in Figure 1, now that we want to merge them together. These two grids meet the requirement for merging as described above. RMC on either grid01 or grid02 in the Layer Control panel.
Set the cursor in selection mode, then RMC on the first node, hold the Shift key then LMC on the second node (note that the two nodes must be on the same grid line where two grids contacting). Once the segment is highlighted . Now we can select one of the following three ways to merge them.
(1) Click the Merge Two Grids button from the main toolbar or,
(2) Go to the Grid menu then select Merge Two Grids option or,
(3) RMC to display options, select Merge Two Grids option.
Figure 2 shows options to merge two grids.
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Figure 2 Options to merge two grids.
After merging the two grids, a new grid layer (the result grid layer) is added to the Layer Control panel as shown in Figure 3.
A new capability in Grid+ compare to also allows the CVLGrid in merging of two grids is, in the case there is a shared grid block of the two grids we still merge them where there are overlapping cells as shown in Figure 4. In this case, instead of defining a contacted contacting gridline, we will define a grid block and then select Merge Two Grids option.
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