Geometry

Strategy for Geometry Creation

In order to create the desired geometry we will first create a surface body for the cylinder. Next, we will create a surface body for the outer boundary as a "frozen body", so that it doesn't merge with the first surface body. Then, we will use a boolean operation to subtract the small surface body from the large surface body. At this point, we will have the surface body of the outer boundary with a hole in the middle where the cylinder is. Lastly, we will project a vertical line on to the geometry, so that radial edge sizing can be implemented in the meshing process.

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

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Launch Design Modeler

(Double Click) Geometry

Create Inner Circle and Dimension

Create a circle, centered around the origin in the xy plane. Set the diameter of the circle to 1m.

Inner Circle Surface Body Creation

Concept > Surfaces From Sketches .
Set the Base Object to Sketch 1 (located underneath XYPlane in the Tree). You can do this by clicking within the tree or you can click on the circle to select Sketch 1. Then click Apply next to Base Object .

Click Generate

Create New Sketch in the XY Plane

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Create Flow Domain 

Launch ANSYS Workbench: Start > All Programs > ANSYS > Workbench

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Imprint Lines to Control Mesh Sizing 

Create Outer Circle and Dimension

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Outer Circle Surface Body Creation

In this step the Surface Body will be created as a frozen, such that it does not merge with the inner circle surface body.

Concept > Surfaces From Sketches .
Set the Base Object to Sketch 2 (located underneath XYPlane in the Tree). You can do this by clicking within the tree or you can click on the outer circle to select Sketch 2. Then click Apply next to Base Object .

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Carry Out Boolean Operation: Subtraction

In this step, the inner circle will be subtracted from the outer circle in order to obtain the desired geometry.

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Create a Bisecting Line

The purpose of this step and the following two steps is to imprint a line onto the geometry that will, allow for radial edge sizing in the meshing step.

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