Pre-processing

Figure 82 Final geometry for analysis

Again the geometry for this example is created using the Pre-processor. First we have to create the points with the co-ordinates given below, and then join them into lines (the edges of the control volume).

Points:

 

 

 

Nº:

Coordinates:

1.

-4.000000

-3.500000

0.000000

2.

-4.000000

0.000000

0.000000

3.

-4.000000

3.500000

0.000000

4.

9.000000

3.500000

0.000000

5.

9.000000

0.000000

0.000000

6.

9.000000

-3.500000

0.000000

7.

0.500000

0.000000

0.000000

8.

-0.500000

0.000000

0.000000

Next we create the circle representing the cylinder's section using the Copy utility (Utilities Menu) for copying the point while rotating it around a specified centre.

By choosing the Copy window options showed in Figure 83 and applying them to point Nº. 7, the point will rotate 180º around the z-axis (by default if Two dimensions is selected) about the centre entered as First point. The option Do extrude: Lines results in the tracing of the upper half of the circle. In order to draw the rest of the circle apply the same action to point Nº 8.

Figure 83 Copy window; extrude circle