Page 324 - Finite Element Modeling and Simulations with ANSYS Workbench

Thermal Analysis 309

Material: Aluminum
k = 170 W/(m·K)
3
ρ = 2800 kg/m ; c = 870 J/(kg· K)
E = 70 GPa; ν = 0.3
α = 22×10 –6 1/°C
Base of the
heat sink Boundary Conditions:
2
Air temperature of 28°C; h = 30 W/(m ·°C).
2

Steady-state: q' = 1000 W/m on the base.
Transient: Square wave heat flux on the base.
Initial Conditions:
Steady-state: Uniform temperature of 28°C.
All dimensions are in millimeters. Transient: Steady-state temperature results.

Part A: Steady-State Thermal Analysis
Step 1: Start an ANSYS Workbench Project
Launch ANSYS Workbench and save the blank project as ‘Heatsink.wbpj’.
Step 2: Create a Steady-State Thermal Analysis System
Drag the Steady-State Thermal icon from the Analysis Systems Toolbox
window and drop it inside the highlighted green rectangle in the Project
Schematic window.

Step 3: Add a New Material
Double-click on the Engineering Data cell to add a new material. In the follow-
ing Engineering Data interface which replaces the Project Schematic, type