# B select the vertex that is shared by all three

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b) Select the vertex that is shared by all three cylinders ( x = y = z ). c) Click Apply to accept the selected vertices and create an edge between them. The edge is shown in Figure 3-7 and will appear yellow in the graphics window. Edge Figure 3-7: Straight edge created inside the volume

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Procedure MODELING A THREE-PIPE INTERSECTION (3-D) 3-14 © Fluent Inc., Sep-04 4. Create faces inside the three-pipe volume. GEOMETRY FACE FORM FACE This command sequence opens the Create Face From Wireframe form. a) Create a face inside the geometry using the edge created in the previous step. i. Select the edge created in the previous step. ii. Select a curved edge on one of the cylindrical surfaces that is connected to the edge just selected. iii. Select the edge that closes the loop. The three edges to be selected are shown in Figure 3-8.
MODELING A THREE-PIPE INTERSECTION (3-D) Procedure © Fluent Inc., Sep-04 3-15 Figure 3-8: Three edges used to create a face iv. Click Apply to accept the selection and create a face. The edge created in the previous step will turn blue. b) Create a second face by selecting the blue edge, a different curved edge connected to the blue edge, and the edge that closes the loop. c) Create a third face by selecting the blue edge, the third curved edge connected to the blue edge, and the edge that closes the loop. The three faces are shown in Figure 3-9. It may be useful to remove the volumes from the display; it is then easier to see the faces you created. The volumes are not deleted, just removed from the graphics window. To remove the volumes from the display, click the SPECIFY DISPLAY ATTRIBUTES command button at the bottom of the Global Control toolpad. Select the check box to the left of Volumes . Select the Off radio button to the right of Visible near the bottom of the form, and click Apply . Turn the visibility of the volumes back on after you have examined the faces.

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Procedure MODELING A THREE-PIPE INTERSECTION (3-D) 3-16 © Fluent Inc., Sep-04 Figure 3-9: Three faces created inside the pipe intersection 5. Split the three-pipe volume using the faces created in the previous step. GEOMETRY VOLUME SPLIT/MERGE VOLUMES This command sequence opens the Split Volume form.
MODELING A THREE-PIPE INTERSECTION (3-D) Procedure © Fluent Inc., Sep-04 3-17 a) Select the three-pipe volume in the graphics window. b) Select Face (Real) as the Split With option. c) Left-click in the Face list box located below the Split With section to make the Face list box active. d) Pick one of the internal faces created in the steps above. Shift -middle-click on a face if you need to unselect it and select the face next to it. e) Click Apply to split the volume. f) Repeat Steps (a) through (e), using one of the other two internal faces to split the three-pipe volume.

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• Spring '10
• P.K.Lele
• Geometry, Widgets, Faces

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