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  • Steady Flow Past a Cylinder - Geometry

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Author: John Singleton and Rajesh Bhaskaran

Problem Specification
1. Pre-Analysis & Start-Up
2. Geometry
3. Mesh
4. Setup (Physics)
5. Solution
6. Results
7. Verification and Validation
Exercises

Under Construction: Please go to Step 3 to download the geometry and mesh files.

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. Download the "zip" file, then extract the files to your working directory. In order to load the necessary files, go to the Workbench Project Page, then (Click) File > Open > "Cylinder.wbpj". Lastly, click here to skip ahead to Step 4 of the tutorial.

FlowPastCylinder.zip

2. Geometry

Fluid Flow(FLUENT) Project Selection

Drag Fluid Flow(FLUENT) into the Project Schematic window.

Analysis Type

(Right Click) Geometry > Properties
Set Analysis Type to 2D

Launch Design Modeler

(Double Click) Geometry

Create Two Concentric Circles and Dimension

Create two concentric circles, centered around the origin in the xy plane. Set the diameter of the inner circle to 1m and set the diameter of the outer circle to 64 m.

Surface Body Creation

Concept > Surfaces From Sketches.
Set the Base Object to Sketch 1 (located underneath XYPlane in the Tree). Click Generate

Create a Bisecting Line

Click on XYPlane in the tree and it should highlight blue. Then, click the new sketch button, . In the new sketch draw a line on the y axis that goes through both of the concentric circles. Make sure that it is coincident to the y axis. Then trim the line segments that lay inside of the inner circle and the line segments that lay outside of the outer circle. This, is carried out by using the Trim feature located in the Modify portion of Sketching.

Line Body Creation

Concept > Lines From Sketches.
Set the Base Object to Sketch 2 (located underneath XYPlane in the Tree). Click Generate

Projection

Tools > Projection.
Apply the two lines that you created to edge and apply the surface body to target. You must do these steps by using the line selection filter and the surface selection filter. For the two lines hold down control to select them both. Click Generate.



Go to Step 3: Mesh

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