Include Page |
---|
...
|
...
|
...
Include Page | ||||
---|---|---|---|---|
|
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.
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.
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.
...
We'll run FLUENT within the ANSYS Workbench interface. Start Start ANSYS workbench:
Start > All Programs > ANSYS 1219.0 1 > Workbench
Following The following figure shows the workbench window.
newwindow | ||||
---|---|---|---|---|
| ||||
https://confluence.cornell.edu/download/attachments/111221567/Workbench.png |
On At the left hand side of the workbench window, you will see a toolbox full of various analysis systems. In To the middleright, 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.
Since our problem involves fluid flow, we will select the FLUENT component on the left panel.
Left click (and hold) on Fluid Flow (FLUENT), and drag the icon to the empty space in the Project Schematic. Here's what you get:
...
https://confluence.cornell.edu/download/attachments/111221567/workbench%20fluent.png
Since we selected Fluid Flow (FLUENT), each cell of the system corresponds to a step in the process of performing the FLUENT analysis. Rename the project to Forced Convection.
Now, we just need to work out each step from top down to get to the results for our solution.
- We start by preparing our geometry
- We use geometry to generate a mesh
- We setup the physics of the problem
- We run the problem in the solver to generate a solution
- Finally, we post process the solution to gain insight into the results
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