Generation of Computational Mesh for Haemodynamics Analysis - Computational Hemodynamics: Theory, Modelling and Applications - page 175

Fig. 6.23 Multi-Block structured mesh flow chart for a stenosed artery

4. To further fit the fluid domain, all blocks are split along the x-direction and
y-direction, thus creating further blocking topology for the fluid domain.
5. Similar with step three, all new block edges are associated to their nearest geom-
etry entities.
6. The existing hexa-grid blocking topology is converted to an O-Grid topology,
where a prism layer is created at the near wall region.
7. Based on the dimension of the fluid domain, reasonable node distributions are
defined at each block edge to produce the final mesh.

6.5.4 Left Coronary Artery Bifurcation Step-By-Step

Similar to the stenosed artery case study, a representative left coronary artery bifur-
cation is meshed, and detailed step instructions are provided in Fig. 6.24 .
1. First, a single initial block is created to enclose the whole fluid domain.
2. The initial block is divided into six sub-blocks
3. Two blocks are deleted to form a T-shape as seen in Fig. 6.22 .
4. The remaining blocks are associated to the nearest geometry entities, and a
preliminary block topology is built to meet the bifurcating branches.