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Author: John Singleton and Rajesh Bhaskaran

[Problem Specification|FLUENT 12.1 - Steady Flow Past a Cylinder - Problem Specification]
[1. Pre-Analysis & Start-Up|FLUENT 12.1 - Steady Flow Past a Cylinder - Pre-Analysis & Start-Up]
[2. Geometry|FLUENT 12.1 - Steady Flow Past a Cylinder - Geometry]
{color:#ff0000}{*}3. Mesh{*}{color}
[4. Setup (Physics)|FLUENT 12.1 - Steady Flow Past a Cylinder - Setup (Physics)]
[5. Solution|FLUENT 12.1 - Steady Flow Past a Cylinder - Solution]
[6. Results|FLUENT 12.1 - Steady Flow Past a Cylinder - Results]
[7. Verification and Validation|FLUENT 12.1 - Steady Flow Past a Cylinder - Verification & Validation]
[Exercises|FLUENT 12.1 - Steady Flow Past a Cylinder - Exercises]
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{info:title=Care to skip the geometry and meshing steps?  README}
If you would prefer to skip the geometry and mesh steps, then you can download the necessary files [here|^FlowPastCylinder.zip]. Download the "zip" file, then extract the files to your working directory. In order to load the necessary files, go to the {color:#660066}{*}{_}Workbench Project Page{_}{*}{color}, then {color:#660066}{*}_(Click) File > Open > "Cylinder.wbpj"_{*}{color}. Lastly, click [here|FLUENT 12.1 - Steady Flow Past a Cylinder - Setup (Physics)] to skip ahead to Step 4 of the tutorial.
{info}

{note|title=under construction}{note}

h2. 3. Mesh

In this section the geometry will be meshed with 18,432 elements.  The geometry will be given 192 circumferential divisions and 96 radial divisions. Mapped face meshing will be used and biasing will be used in order to significantly increase the number of elements located close to the cylinder.

h4. Launch Mesher

{color:#660066}{*}_(Double Click) Mesh{_}{*}{color}

h4. Mapped Face Meshing

{color:#660066}{*}_(Right Click) Mesh > Insert > Mapped Face Meshing{_}{*}{color}
Set {color:#660066}{*}{_}Geometry{_}{*}{color} to both portions of the surface body. You will have to hold down control in the selection process in order to highlight both halves. Click {color:#660066}{*}{_}Update{_}{*}{color}.

h4. Circumferential Edge Sizing

{color:#660066}{*}_(Right Click) Mesh > Insert > Sizing{_}{*}{color}
Set {color:#660066}{*}{_}Geometry{_}{*}{color} to both edges of the surface body. You will have to use the edge selection filter and you will have to hold down control in the selection process in order to highlight both halves. Set {color:#660066}{*}{_}Type{_}{*}{color} to {color:#660066}{*}{_}Number of Divisions{_}{*}{color}, set {color:#660066}{*}{_}Number of Divisions{_}{*}{color} to 96 and set {color:#660066}{*}{_}Behavior{_}{*}{color} to {color:#660066}{*}{_}Hard{_}{*}{color}. Click {color:#660066}{*}{_}Update{_}{*}{color} to generate the new mesh.

h4. Radial Edge Sizing 1 (Top Half)

{color:#660066}{*}_(Right Click) Mesh > Insert > Sizing{_}{*}{color}
Set {color:#660066}{*}{_}Geometry{_}{*}{color} to the top half of the bisecting line. Set {color:#660066}{*}{_}Type{_}{*}{color} to {color:#660066}{*}{_}Number of Divisions{_}{*}{color}, set {color:#660066}{*}{_}Number of Divisions{_}{*}{color} to 96 and set {color:#660066}{*}{_}Behavior{_}{*}{color} to {color:#660066}{*}{_}Hard{_}{*}{color}. Then, set {color:#660066}{*}{_}Bias Type{_}{*}{color} to the first option and set {color:#660066}{*}{_}Bias Factor{_}{*}{color} to 460. These selections are shown in the image below.
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\\  !RES1.png!\\
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h4. Radial Edge Sizing 2 (Bottom Half)

{color:#660066}{*}_(Right Click) Mesh > Insert > Sizing{_}{*}{color}
Set {color:#660066}{*}{_}Geometry{_}{*}{color} to the top half of the bisecting line. Set {color:#660066}{*}{_}Type{_}{*}{color} to {color:#660066}{*}{_}Number of Divisions{_}{*}{color}, set {color:#660066}{*}{_}Number of Divisions{_}{*}{color} to 96 and set {color:#660066}{*}{_}Behavior{_}{*}{color} to {color:#660066}{*}{_}Hard{_}{*}{color}. Then, set {color:#660066}{*}{_}Bias Type{_}{*}{color} to the second option and set {color:#660066}{*}{_}Bias Factor{_}{*}{color} to 460. These selections are shown in the image below.
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\\  !RES2.png!\\
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Then,  click {color:#660066}{*}{_}Update{_}{*}{color} to generate the new mesh. You should obtain the mesh, that is shown below.
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\\  !Mesh_350.png!\\
{newwindow: Click Here For Higher Resolution}https://confluence.cornell.edu/download/attachments/144972134/Mesh_Full.png{newwindow}\\

h4. Verify Mesh Size

{color:#660066}{*}_(Click) Mesh > (Expand) Statistics{_}{*}{color}
You should have 18,624 nodes and 18,432 elements.
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[Go to Step 4: Setup (Physics)|FLUENT 12.1 - Steady Flow Past a Cylinder - Setup (Physics)]\\
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[See and rate the complete Learning Module|FLUENT 12.1 - Steady Flow Past a Cylinder - Problem Specification]\\
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