Topology Of The Mesh
TrueGrid® generates block structured meshes consisting of hexahedron 3D solid elements, aligned
in rows, columns, and layers to form a block. Each row has the same number of elements. Likewise,
each column has the same number of elements and each layer has the same number of elements.
You can imagine a block mesh by slicing a rectangular block at regular intervals along each of the
three coordinate axis. This block mesh is the basic component in building complex meshes. A part
can consist of many blocks. It is also possible to generate 2D shell and 1D beam elements in this
fashion. These will not be dealt with later in this section, in order to simplify the initial discussion.
Full Indices
Each node in a block mesh can be identified by three indices. The first index, referred to as the iindex, identifies the sequence number of the slice in the mesh along the first coordinate axis. The
second, j, and third, k, indices are defined in a similar way. These three indices are known as the
full indices of a node.
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