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Fit to Nearest Spline
Fit to Nearest Land Boundary
Refine Grid Block
The Refine Grid Block tool increases the resolution of the specific grid block. It operates by multiplying the existing number of cells in the current grid with (IC, JC) independently.
Select two gird nodes by holding the SHIFT key to define the grid block. RMC and select Refine Gird Block. Then, the Grid Block Refinement tab will appears. It is able to set the I and J refinement factor separately.
Figure. Grid before applying "Refine Gird Block"
Figure. Grid after applying "Refine Gird Block"
Coarsen Grid Block
The Coarsen Grid Block tool operates in an opposite way to that for Refine Grid Block. It decreases resolution of the grid.
Select two gird nodes by holding the SHIFT key to define the grid block. RMC and select Coarsen Gird Block. Then, the Grid Block Coarsening tab will appears. It is able to set the I and J coarsenig factor separately.
Figure. Grid before applying "Coarsen Gird Block"
Figure. Grid before applying "Coarsen Gird Block"
Delete Grid Block
Eliminate the select grid block
Line Mirror
Duplicate the gird to opposite site of the select line.
Figure. Select Line Mirror
Figure. New Grid Line
Line Smooth
The Line Smooth tool is used to smooth the grid domain and redistribute the distance between grid nodes. That will improve the accuracy of the model.
Figure Grid image before applying smoothing.
Figure Grid image after applying smoothing.
Line Attraction
Line Repulsion
Create Spline
Clear Selection
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Figure 2
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Line Smooth
To make the grid domain more even and to redistribute the distance between grid nodes the Line Smooth tool may be used. The steps to do this are:
- Select a grid layer in the Layer Control
- RMC on a node, hold the Shift key then LMC on the second node (these two nodes must be on the same gridline), and the segment will be highlighted. RMC to display the options, and select the Line Smooth option as shown in 2118778886. As a result, grid nodes are distributed along with the selected segment as shown in 2118778886. Note that after applying this option, the grid should be orthogonalized again.
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Figure 1. Grid image before applying smoothing.
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Figure 2. Grid image after applying smoothing.
Line Attraction
The Line Attraction tool is used to shift grid nodes forward to certain point or line. The nodes within a defined area are moved in the direction a gridline selected by the user.
- Select the grid layer in the Layer Control by LMC on that grid layer
- Set the mouse in the selection mode, hold the Shift key then LMC on two edge grid nodes on the same grid line segment. The segment will be highlighted in purple, then LMC on the third grid node to define the area to be affected. Next, release Shift, then RMC to show options, and select the Line Attraction option, as shown in 2118778886. As a result, a set of nodes will be moved forward to the gridline segment as shown in 2118778886.
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Figure 3. Line Attraction option.
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Figure 4. A Grid after applying the Line Attraction option.
Line Repulsion
The Line Repulsion option is opposite to the Line Attraction option in that the nodes in the defined area are moved away from the selected grid line. The steps to define the selected gridline and impacted area are similar to the Line Attraction option described above. After defining the impacted area, RMC to display options, and select the Line Repulsion as shown in 2118778886.
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Figure 5. Line Repulsion option.