Page 188 - Finite Element Analysis with ANSYS Workbench

9.4 Application 179

 The problem is now ready to solve for solution. Click on
the Solution tab and under Steady-State Thermal and
right click on the Solve icon, the analysis will be performed.
 Click on the Solution item, the Thermal tab will appear on
the lower menu bar. Click on this Thermal tab and select
the Temperature option, the Temperature item will pop-
up beneath the Solution item. Right click at the Tempera-
ture item and select Evaluate All Results, the solution in
form of color fringe plot will appear as shown in the figure.

9.4 Application

9.4.1 Three-dimensional Heat Transfer through Fins

A three-dimensional heat sink, consisting of fins as
shown in the figure, is made from a material that has the thermal

conductivity coefficient of k  237 W m- C . The heat sink trans-
fers heat from the bottom surface to the surrounding air by fins.
The bottom surface of the heat sink is subjected to a specified
heating of q  1500 Wm . The convection coefficient of fin
2
2 
surface is h  40 Wm - C and the surrounding air temperature is

T  30 C. We will use ANSYS through its Workbench to deter-

mine the temperature distribution of this heat sink.