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  • FLUENT - Steady Flow Past a Cylinder - Step 2

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\[Problem Specification\|FLUENT - Supersonic Flow Over a Wedge - Problem Specification\] \\ [1. Create Geometry in GAMBIT|FLUENT - Steady Flow Past a Cylinder Step 1]\\ <span style="color: #ff0000"><strong>2. Mesh Geometry in GAMBIT</strong></span>\\ [3. Specify Boundary Types in GAMBIT|FLUENT - Steady Flow Past a Cylinder Step 3]\\ [4. Set Up Problem in FLUENT|FLUENT - Steady Flow Past a Cylinder Step 4]\\ [5. Solve|FLUENT - Steady Flow Past a Cylinder Step 5]\\ [6. Analyze Results|FLUENT - Steady Flow Past a Cylinder Step 6]\\ [7. Verify Results|FLUENT - Steady Flow Past a Cylinder Step 7]

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Author: Rajesh Bhaskaran & Yong Sheng Khoo, Cornell University

Problem Specification
1. Create Geometry in GAMBIT
2. Mesh Geometry in GAMBIT
3. Specify Boundary Types in GAMBIT
4. Set Up Problem in FLUENT
5. Solve
6. Analyze Results
7. Refine Mesh
Problem 1
Problem 2

Wiki Markup

Step 2: Mesh Geometry in GAMBIT

Mesh Edges

Before we mesh the facefaces, we should mesh the edges to so that we can better define our the mesh.

Following figure shows the edges with different mesh properties.


(Click picture for larger image)

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https://confluence.cornell.edu/download/attachments/103729331/step2_img001.jpg?version=3

Label

Edge Mesh Properties

A

Interval Count: 36, Double First Length: 0.4667 5

B

Interval Count: 36, Double First Length: 0.1867 2

C

Interval Count: 30, First Length: 0.129 1

D

Interval Count: 18

E

Interval Count: 90, First Length: 0.1

F

Interval Count: 36

G

Interval Count: 72

H

Interval Count: 30

I

Interval Count: 36, Double First Length: 0.04667 05


Operation Toolpad > Mesh Command Button > Edge Command Button  > Mesh Edges

Select the edge AB. The edge will change color and an arrow will appear on the edge. This indicates that you are ready to mesh this edge. Select interval size under Spacing. Enter 0.04 for interval size.

Next we will mesh the edge BC. Select the edge BC and enter 0.04 for interval size.

Do the same for edge CD and CF.

Mesh edge 'A' through 'I' according to the properties shown on the table.

After we have all the edge meshes, we can mesh the facesNow that the appropriate edge meshes have been specified, mesh the face face1:

Operation Toolpad > Mesh Command Button > Face Command Button > Mesh Faces

Select the face1. The face will change colorface one by one. You can use the defaults of Quad (i.e. quadrilaterals) and Map. Click Apply.

The meshed face should look as follows:

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(Click picture for larger image)

Next mesh face face2 in a similar fashion.

The resultant mesh should look as follows:

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 (Click picture for larger image)

...

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Higher Resolution Image
https://confluence.cornell.edu/download/attachments/103729331/step2_img002.jpg?version=1

Go to Step 3: Specify Boundary Types in GAMBIT

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