Geometry 1
In the first part, we have been using a convective cooling boundary condition to account for the airflow cooling. While there are a number of geometrical configurations for which the heat transfer coefficient is known with very good accuracy, that is not the case for this particular heat sink geometry.
Modify the model to include the air channel in the geometry and to compute the air velocity. Then, you can accurately model the flow cooling without relying on any approximation of the heat transfer coefficient.
Block 2 (blk2)
1
In the Geometry toolbar, click Block .
2
In the Settings window for Block, locate the Size and Shape section.
3
In the Width text field, type W_channel.
4
In the Depth text field, type D_channel.
5
In the Height text field, type H_channel.
6
Locate the Position section and type -(W_channel-40[mm])/2 in the x text field.
7
In the y text field, type -80[mm].
8
In the Geometry toolbar, click Build All .
9
In the Graphics toolbar, click the Zoom Extents button .