Grid creating functions¶
The grid creating functions is explained in this section. Refer to Creating a grid for an overview of grid creation.
When the [Pre-processing Window] is active, grids can be created by using the menu items in [Grid] menu. Grids can be created in the following procedure:
- Select an algorithm for creating a grid.
- Set grid creating condition necessary for the algorithm using.
- Create a grid.
Operations for 2. and 3. differ by algorithm.
Table 15 shows the grid creating algorithms that can be used for iRIC.
|Two-dimensioinal structured grid||[Create grid from polygonal lines and width]||Creates a grid that smoothly follows a polygonal line.|
|[Create grid from river survey data]||Creates a grid from [River Survey Data]. In addition to transverse lines being set, division points are set on the transverse lines the river centerline and left / right bank lines.|
|[Create geometric shape grid]||Creates a grid in a geometric shape such as sine curve by setting parameters.|
|[Create grid by dividing rectangular region]||Creates a rectangular grid that is evenly divided in the x and y directions.|
|[Create compound channel grid]||Creates a grid that has lower channel, by defining grid creating region and lower channel region.|
|[Create grid shape solving Poisson equation]||By solving Poisson equation, generate grid whose cell shape are similar to squares.|
|[General purpose grid generation tool]||By solving convergence calculation, generate grid whose cell edge length changes smoothly.|
|Two-dimensional unstructured grid||[Create grid from polygon shape]||Creates an unstructured grid from polygon shape. Grid region, refinement regions, hole regions are defined as polygons.|
|One-dimensional structured grid (Each node holds the cross-section data.)||[Create grid from River Survey Data]||Creates grid from River Survey Data. In addition to transverse lines being set, division points are set on the transverse lines, the river centerline and left/right bank lines.|
The common operations available for all of these algorithms are explained in Common functions. Operations specific to the algorithms are explained in [Create grid from Polygonal line and width] to [Create grid from polygon shape].
Operations available for each algorithm are accessible as sub menu item of the following:
Menu bar: [Grid] (G) –> [Grid Creating Conditions] (C)
- Common functions
- [Create grid from Polygonal line and width]
- [Create grid from River Survey Data] (2-D structured grid)
- [Create geometric shape grid]
- [Create grid by dividing rectangular region]
- [Create compound channel grid]
- [Create grid shape solving Poisson equation]
- [General purpose grid generation tool]
- [Create grid from River Survey Data] (1-D structured grid)
- [Create grid from polygon shape]