Building the Mesh

This section describes the step-by-step procedure to prepare the mesh for the mixing pipe of PID controller model. The General Mesher is used to create the mesh.

Pipe

Select General Mesher in the Mesh Panel.
Select CAD Surfaces pipe_cold_inlet, pipe_hot_inlet, pipe_outlet and pipe_wall in the Geometric Entities Panel and click Add Surfaces icon for CAD Surfaces in the Properties Panel.
Enter Maximum Cell Size as 0.005, General.Minimum Cell Sizes as 0.0007 and Cell Size on Surfaces as 0.005 in the Properties Panel.
Click Create Mesh. A new mesh pipe is created under Built Meshes in the Geometric Entities Panel.
The meshed volume pipe is generated under Volumes.

Figure 10.65 - Pipe mesh settings

Note: The mesh can be edited/replaced by selecting it under Built Meshes and modify the mesh parameters in the Properties Panel. Click Create Mesh to reflect the changes.

The mesh created for the fluid domain is shown below:

Figure 10.66 - Mesh

Figure 10.67 - Sectional view