SimCafe

Space shortcuts

Child pages
  • Forced Convection - Pre-Analysis & Start-Up

Versions Compared

Old Version 29

changes.mady.by.user Unknown User (ohe4)

Saved on

compared with

New Version Current

changes.mady.by.user user-996c5

Saved on

Key

  • This line was added.
  • This line was removed.
  • Formatting was changed.
Comment: Migration of unmigrated content due to installation of a new plugin

Include Page

...

Forced Convection - Panel

...

Forced Convection - Panel

...

Include Page
FLUENT Google Analytics
FLUENT Google Analytics

Pre-Analysis & Start-Up

...

Since the pipe cross-section is circular and heat is applied in an axisymmetric manner, we'll assume that the flow is axisymmetric. In cylindrical polar coordinates, this means that the flow variables depend only on the axial coordinate x and radial coordinate r, and are independent of the azimuthal coordinate θ. Hence we can model the pipe problem with a rectangular domain.

Image Removed

Here R = radius of the pipe, and L = length of the pipe. Rotating the above rectangle 360 degrees about the axis will recover the full pipe geometry.

Start ANSYS FLUENT

We'll run FLUENT within the ANSYS Workbench interface.

Click on Run. This brings up the ANSYS interface. To make the best use of screen real estate, move the windows around and resize them so that you approximate this screen arrangement. This way you can read instructions in the browser window and implement them in ANSYS. Note that this tutorial has been formatted to fit in a skinny browser window. If your monitor screen is small, you can use Alt+Tab keys to conveniently switch between the ANSYS and browser windows (this trick works in Microsoft Windows).

You can resize the text in the browser window to your taste and comfort as follows:

In Internet Explorer: Menubar > View > Text Size, then choose the appropriate font size.

In Mozilla Firefox: Menubar > View > Zoom

 

Introduction

HTML
<iframe width="640" height="360" src="https://www.youtube.com/embed/6x3StgoE588" frameborder="0" allowfullscreen></iframe>

 

Verification and Validation Definition

HTML
<iframe width="640" height="360" src="https://www.youtube.com/embed/F9z6yAfrztk" frameborder="0" allowfullscreen></iframe>

 

Pre-Analysis Overview

HTML
<iframe width="640" height="360" src="https://www.youtube.com/embed/LD0Y3u7I3VY" frameborder="0" allowfullscreen></iframe>

 

Domain

HTML
<iframe width="640" height="360" src="https://www.youtube.com/embed/7TzFNTX3G5w" frameborder="0" allowfullscreen></iframe>

 

k-epsilon Turbulence Model

HTML
<iframe width="640" height="360" src="https://www.youtube.com/embed/Rq0AaSnZ1GM" frameborder="0" allowfullscreen></iframe>

 

Boundary Conditions

HTML
<iframe width="640" height="360" src="https://www.youtube.com/embed/h-sf7EhuljI" frameborder="0" allowfullscreen></iframe>

 

Numerical Solution Procedure

HTML
<iframe width="640" height="360" src="https://www.youtube.com/embed/qrhmt0Q2Z8U" frameborder="0" allowfullscreen></iframe>

 

Start ANSYS FLUENT

This tutorial is specially configured, so the user can have both the tutorial and ANSYS open at the same time as shown below. It will be beneficial to have both ANSYS and your internet browser displayed on your monitor. Your internet browser should consume approximately one third of the screen width while ANSYS should take the other two thirds. You can use the windows command Alt + Tab to switch screens.

Image Added

We'll run FLUENT within the ANSYS Workbench interface.  Start Start ANSYS workbench:

Start > All Programs > ANSYS 1219.1 > Workbench

The following figure shows the workbench window.

 

newwindow
Higher Resolution Image
Higher Resolution Image
https://confluence.cornell.edu/download/attachments/111221567/Workbench.png
 

On the left hand side of the workbench window, you will see a toolbox full of various analysis systems. To the right, you see an empty work space. This is the place where you will organize your project. At the bottom of the window, you see messages from ANSYS.

Info

Note to Cornell students enrolled in MAE 4272: You can skip the geometry and mesh steps. (You will be getting into the meshing application later in the Verification and Validation step for refining the mesh.) Download the mesh by right clicking here and saving the zip file to a convenient location. Unzip the downloaded file (you cannot read in the zip file directly). After unzipping, you should see a file called pipe_flow.wbpj and a folder called pipe_flow_files. Read the mesh into Workbench using File > Open. Browse to the pipe_flow.wbpj file and

...

double-click on it. Then skip to Step 4: Setup (Physics).



Go to Step 2: GeometrySee and rate the complete Learning Module

Go to all FLUENT Learning Modules