## Introduction

This tutorial was created using ANSYS 7.0 to solve simple thermal examples. Analysis of a simple conduction as well a mixed conduction/convection/insulation problem will be demonstrated.The Mixed Convection/Conduction/Insulated Boundary Conditions Example is constrained as shown in the following figure (Note that the section is assumed to be infinitely long):

## Preprocessing: Defining the Problem

**Give example a Title****Open preprocessor menu**ANSYS Main Menu > Preprocessor `/PREP7`**Create geometry**Preprocessor > Modeling > Create > Areas > Rectangle > By 2 Corners > X=0, Y=0, Width=1, Height=1 `BLC4,0,0,1,1`**Define the Type of Element****Element Material Properties****Mesh Size****Mesh**

`ET,1,PLANE55`

`MP,KXX,1,10`This will specify a thermal conductivity of 10 W/m*C.

`AESIZE,ALL,0.05`

`AMESH,ALL`

## Solution Phase: Assigning Loads and Solving

**Define Analysis Type****Apply Conduction Constraints**In this example, all 2 sides of the block have fixed temperatures, while convection occurs on the other 2 sides.**Solution > Define Loads > Apply > Thermal > Temperature > On Lines**- Select the top line of the block and constrain it to a constant value of 500 C
- Using the same method, constrain the left side of the block to a constant value of 100 C
**Apply Convection Boundary Conditions****Solution > Define Loads > Apply > Thermal > Convection > On Lines**- Select the right side of the block.The following window will appear:
- Fill in the window as shown. This will specify a convection of 10 W/m
^{2}*C and an ambient temperature of 100 degrees Celcius. Note that VALJ and VAL2J have been left blank. This is because we have uniform convection across the line. **Apply Insulated Boundary Conditions****Solution > Define Loads > Apply > Thermal > Convection > On Lines**- Select the bottom of the block.
- Enter a constant Film coefficient (VALI) of 0. This will eliminate convection through the side, thereby modeling an insulated wall. Note: you do not need to enter a Bulk (or ambient) temperature
**Solve the System**

`ANTYPE,0`

`SOLVE`

## Postprocessing: Viewing the Results

**Results Using ANSYS**

**Plot Temperature**
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