To model baffles - manually

Create elements along a manually created curve to represent a baffle.

Note: Baffles can also be modeled at time of meshing by extracting center lines from an imported CAD model of the cooling system and assigning a property of Baffle to the appropriate curves

It is assumed that:

• The cooling channel curves have been defined
• A baffle is to be added to one or more of these curves
• There is not a node on the cooling channel curve where the baffle is to be created.

Note: For a Cool (BEM) analysis, when cooling elements pass through an insert that has different thermal properties to the rest of the mold, the insert material needs to be specified and applied to those elements.

Nodes may need to be placed on the cooling channel curve at the boundary of the insert so that affected elements and the insert align. Apply a different property to the impacted elements so that the insert material can be easily applied.

Modeling a baffle with a single channel

1. Click (Geometry tab > Create > Create Node) and place a node at the baffle origin.

2. Click (Geometry tab > Create panel > Curves > Create Line) and create a line from the node towards the part. End the curve a distance from the part that is at least equivalent to the diameter of the baffle.

   

3. Select the curve that represents the baffle. Click Geometry tab > Properties panel > Assign > New > Baffle.

4. Enter the baffle dimension in the Baffle Surface Properties tab of the Baffle dialog.

5. Enter 0.5 for the Heat transfer effectiveness (HTE).

6. Select the mold material from the options in the Mold Properties tab of the Baffle dialog. If the baffle is encased in a different material to the rest of the mold, it is important to specify that material.

7. In the Name box, enter an appropriate name for the baffle, then click OK twice.

8. Click (Mesh tab > Mesh panel > Generate Mesh), and click Mesh, to launch the Simulation Compute Manager.

9. In the Simulation Compute Manager, select the solve location, then click Launch.

   

Modeling a baffle with dual channels

1. Click (Geometry tab > Create panel > Curves > Create Line) and create a line from the center line of the inlet (P3), to the top of the tube (P1).

   Note: The position of P1 must be at least one half of the diameter of the baffle shorter than the total height of the baffle. This allows space for the flow of cooling fluid over the baffle.

2. Create a line from the top of the tube (P1), to the center line of the outlet hole (P2), including a small distance along the cooling channel to separate the upward and downward channels. Option: You may overlay the two curves if you prefer.

3. Select both channels (lines P1-P3 and P1-P2), Click Geometry tab > Properties panel > Assign > New > Baffle.

4. Enter 0.5 for the Heat transfer effectiveness (HTE).

5. Select the mold material from the options in the Mold Properties tab of the Baffle dialog. If the baffle is encased in a different material to the rest of the mold, it is important to specify that material.

6. Enter the baffle dimension in the Baffle Surface Properties tab of the Baffle dialog.

7. In the Name box, enter an appropriate name for the baffle, then click OK twice.

8. Click (Mesh tab > Mesh panel > Generate Mesh), and click Mesh, to launch the Simulation Compute Manager.

9. In the Simulation Compute Manager, select the solve location, then click Launch.