Author(s): Sebastian Vecchi, ANSYS Inc

Problem Specification

1. Pre-Analysis & Start-Up

2. Geometry

3. Mesh

4. Physics Setup

5. Results

__Pre-Analysis__

## Equations

The governing equation for heat transfer rate for a rectangular bar, as generalized by Fourier in 1807, is the following equation. In this equation, k is the proportionality factor as a function of material and temperature, A is the cross-sectional area and L is the length of the bar.

The equation above can be written in terms of heat flux using the definition that heat flux is the amount of heat transfer per unit area. This one-dimensional form of Fourier’s law of heat conduction is found below.

A few words on the formatting on the following instructions:

Notes that require you to perform an action are colored in blue

General information will be colored in black, but do not require any action

Words that are

**bolded**are labels for items found in ANSYS AIMMost important notes will be colored in red

__Start-Up__

Now that we have the pre-calculations, we are ready begin simulating in ANSYS AIM. Open ANSYS AIM by going to **Start** > **All Apps** > **ANSYS 18.1** > **ANSYS AIM 18.1**. Once you are at the starting page of AIM, select the **Thermal** template as shown below.

You will be prompted by the **Thermal** template to either **Define new geometry**, **Import geometry file**, or **Connect to active CAD session**. Select **Define new geometry** and press **Next**.

For this problem, we will be using the default **Steady/static** calculation type. Press **Finish**. No additional physics are necessary.

The **Model Editor** will launch automatically. In order to use the units given to us in the problem, press the **Project** button in the top left corner and select **Units** > **US Customary**.