Modeling baffles

A baffle is a cooling system component which is constructed by inserting a metal plate in the cooling channels. The plate forces the coolant to flow up one side of the baffle and down the other.

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 inner and outer channels. Option: You may overlay the two curves if you prefer.
3. Select the inner channel (line P1-P3), right-click and select Properties. Click Yes to the Assign new property? prompt.
4. Click New and select Baffle .
5. Enter 0.5 for the Channel heat transfer effectiveness (HTE).
6. Specify the required dimensions and mold material. In the Name box, enter an appropriate name for the channel property, and click OK twice.
7. Select the outer channel (P1-P2), right-click and select Properties. Click Yes to the Assign new property? prompt.
8. Select the baffle you named in Step 6 and click OK.
9. Right-click on the Mesh Type Selection task in the Study Tasks pane, and select Define Mesh Density . Set the mesh density to 2.5 times the diameter of your baffle. Click Apply and OK.
10. Click Mesh tab > Mesh panel > Generate Mesh, deselect the check boxes and click Mesh Now .

Note: If the top of the baffle will be close to your part, you should leave a gap of at least one diameter of the baffle between the top of the baffle and your part. This is to allow clearance for the dome which forms the top of the baffle.