Page History

{panel}
[Problem Specification|FLUENT - Laminar Pipe Flow Problem Specification]\\  [1. Pre-analysis & Start-up|FLUENT - Laminar Pipe Flow Step 1]\\  {color:#ff0000}{*}2. Geometry{*}{color}\\
[3. Mesh|FLUENT - Laminar Pipe Flow Step 3]\\
[4. Setup (Physics)|FLUENT - Laminar Pipe Flow Step 4 *New]\\
[5. Solution|FLUENT - Laminar Pipe Flow Step 5 *New]\\
[6. Results|FLUENT - Laminar Pipe Flow Step 6 *New]\\
[7. Verification & Validation|FLUENT - Laminar Pipe Flow Step 7]\\
[Problem 1|FLUENT - Laminar Pipe Flow Problem 1]\\
[Problem 2|FLUENT - Laminar Pipe Flow Problem 2]
{panel}
{note:title=Site Under Construction}
We are working on updating this part of the tutorial. Please come back soon.
{note}

h2. Step 2: Geometry

Since our problem involves fluid flow, we will select the FLUENT component on the left panel. 
\\

Left click (and hold) on {color:#660099}{*}{_}Fluid Flow (FLUENT)_{*}{color}{color:#000000}, and drag the icon into the empty space in the{color} {color:#660099}{*}{_}Project Schematic{_}{*}{color}{color:#000000}.  Here's what you get:{color}\\  !workbench fluent_sm.png!
 
Since we selected Fluid Flow(FLUENT), each cell of the system corresponds to a step in the process of performing CFD analysis using FLUENT.  Rename the project to Laminar Pipe.
 
We will work through each step from top down to obtain the solution to our problem.
 
In the {color:#660066}{*}{_}Project Schematic{_}{*}{color} {color:#000000}of the Workbench window, right click on{color} {color:#660099}{*}{_}Geometry{_}{*}{color} {color:#000000}and select{color} {color:#660099}{*}{_}Properties{_}{*}{color}{color:#000000}.  You will see the properties menu on the right of the Workbench window.  Under{color} {color:#660099}{*}{_}Advance Geometry Options{_}{*}{color}{color:#000000}, change the{color} {color:#660099}{*}{_}Analysis Type{_}{*}{color} {color:#000000}to 2D.{color}
 
!geometry properties.png!
 
 In the {color:#660066}{*}{_}Project Schematic{_}{*}{color}{color:#000000}, double left click on{color} {color:#660066}{*}{_}Geometry{_}{*}{color} {color:#000000}to start preparing the geometry.  After you launch the web tutorials and FLUENT, you will have to drag the browser window to the width of the largest image (about 350 pixels).  to make best use of screen real estate, move the windows around and resize them so that you approximate{color}

{newwindow:this screen arrangement}https://confluence.cornell.edu/download/attachments/111221570/ScreenOrientation.PNG{newwindow}\\
At this point, a new window, ANSYS Design Modeler will be opened.  You will be asked to select desired length unit.  Use the default meter unit and click {color:#660099}{*}{_}OK{_}{*}{color}{color:#000000}.{color}\\
\\
\\

h4. Creating a Sketch

Start by creating a sketch on the {color:#660099}{*}{_}XYPlane{_}{*}{color}. Under {color:#660099}{*}{_}Tree Outline{_}{*}{color}, select {color:#660099}{*}{_}XYPlane{_}{*}{color}, then click on {color:#660099}{*}{_}Sketching{_}{*}{color} right before {color:#660099}{*}{_}Details View{_}{*}{color}. This will bring up the {color:#660099}{*}{_}Sketching Toolboxes{_}{*}{color}.
\\
{newwindow:Click Here for Select Sketching Toolboxes Demo}https://confluence.cornell.edu/download/attachments/123547957/Select+Sketching+Toolboxes.gif{newwindow}\\
Click on the {color:#660099}{*}_\+Z{_}{*}{color} axis on the bottom right corner of the {color:#660099}{*}{_}Graphics{_}{*}{color} window to have a normal look of the XY Plane.
\\
\\
{newwindow:Click Here for Select Normal View Demo}https://confluence.cornell.edu/download/attachments/111221570/Select+Normal+View.gif{newwindow}
  In the Sketching toolboxes, select {color:#660099}{*}{_}Rectangle{_}{*}{color}. In the {color:#660099}{*}{_}Graphics{_}{*}{color} window, create a rough Rectangle from starting from the origin in the positive XY direction (Make sure that you see a letter P at the origin before you start dragging the rectangle. The letter P at the origin means the geometry is constrained at the origin.)
\\
\\
\\
You should have something like this:
\\

 !pipe geometry.png!
Note: You do not have to worry about geometry for now, we can dimension them properly in the later step.

h4. Dimensions and Constraints

Now we will specify the appropriate dimensions and constraints. Below is the summary of geometry of the pipe:

<\!-\-  /\* Font Definitions \*/  @font-face 	
{font-family:"Cambria Math"; 	panose-1:2 4 5 3 5 4 6 3 2 4; 	mso-font-charset:0; 	mso-generic-font-family:roman; 	mso-font-pitch:variable; 	mso-font-signature:-1610611985 1107304683 0 0 415 0;} 
@font-face 	
{font-family:Calibri; 	panose-1:2 15 5 2 2 2 4 3 2 4; 	mso-font-charset:0; 	mso-generic-font-family:swiss; 	mso-font-pitch:variable; 	mso-font-signature:-520092929 1073786111 9 0 415 0;}  
/\* Style Definitions \*/  p.MsoNormal, li.MsoNormal, div.MsoNormal 	
{mso-style-unhide:no; 	mso-style-qformat:yes; 	mso-style-parent:""; 	margin-top:0in; 	margin-right:0in; 	margin-bottom:10.0pt; 	margin-left:0in; 	line-height:115%; 	mso-pagination:widow-orphan; 	font-size:11.0pt; 	font-family:"Calibri","sans-serif"; 	mso-ascii-font-family:Calibri; 	mso-ascii-theme-font:minor-latin; 	mso-fareast-font-family:Calibri; 	mso-fareast-theme-font:minor-latin; 	mso-hansi-font-family:Calibri; 	mso-hansi-theme-font:minor-latin; 	mso-bidi-font-family:"Times New Roman"; 	mso-bidi-theme-font:minor-bidi;} 
.MsoChpDefault 	
{mso-style-type:export-only; 	mso-default-props:yes; 	mso-ascii-font-family:Calibri; 	mso-ascii-theme-font:minor-latin; 	mso-fareast-font-family:Calibri; 	mso-fareast-theme-font:minor-latin; 	mso-hansi-font-family:Calibri; 	mso-hansi-theme-font:minor-latin; 	mso-bidi-font-family:"Times New Roman"; 	mso-bidi-theme-font:minor-bidi;} 
.MsoPapDefault 	
{mso-style-type:export-only; 	margin-bottom:10.0pt; 	line-height:115%;} 
@page Section1 	
{size:8.5in 11.0in; 	margin:1.0in 1.0in 1.0in 1.0in; 	mso-header-margin:.5in; 	mso-footer-margin:.5in; 	mso-paper-source:0;} 
div.Section1 	
{page:Section1;} 
\-->

Vertex 2: (0,0.1,0)
Vertex 3: (8,0.1,0)
Vertex 4: (8,0,0)

Under {color:#660099}{*}{_}Sketching Toolboxes{_}{*}{color}, select {color:#660099}{*}{_}Dimensions{_}{*}{color} tab, use the default dimensioning tools. Dimension the geometry as shown:

*insert geometry dimension*

Under {color:#660099}{*}{_}Details View{_}{*}{color} on the lower left corner, input the value for dimension appropriately.
V1: 8 m
H2: 0.1 m


Now we can constraint the lower rectangle with the top of the rectangle which has been properly dimensioned. Click {color:#660099}{*}{_}Constraints{_}{*}{color} tab, select {color:#660099}{*}{_}Equal Length{_}{*}{color}. Click the appropriate top and bottom edge and set them to be of equal length.

Now that we have the sketch done, we can create a surface for this sketch.
\\
h4.Concept>Surfaces From Sketches

This will create a new surface {color:#660099}{*}{_}SurfaceSK1{_}{*}{color}. Under {color:#660099}{*}{_}Details View{_}{*}{color}, select {color:#660099}{*}{_}Sketch1{_}{*}{color} as {color:#660099}{*}{_}Base Objects{_}{*} and click {color:#660099}{*}{_}Apply{_}{*}{color}.  Finally click {color:#660099}{*}{_}Generate{_}{*}{color} to generate the surface.

Go to [Step 3: Mesh|FLUENT - Laminar Pipe Flow Step 3]

[See and rate the complete Learning Module|FLUENT - Laminar Pipe Flow]

[Go to all FLUENT Learning Modules|FLUENT Learning Modules]