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Figure 3.8: Temperature Contours on the Surface, Y= 0.25 in.

In Figure 3.8: Temperature Contours on the Surface, Y= 0.25 in. (p. 110), the high temperatures in the wake of the module are clearly visible. You can also display other quantities such as velocity magnitude or pressure using the Contours dialog box.

3.4.7. Generating Velocity Vectors

Velocity vectors provide an excellent visualization of the flow around the module, depicting details of the wake structure.

1.Display velocity vectors on the symmetry plane through the module centerline (Figure 3.9: Velocity Vectors in the Module Symmetry Plane (p. 112)).

Results → Graphics → Vectors → New...

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Setup and Solution

a.Enter velocity_vector for Vector Name.

b.Confirm that Velocity is selected under Vectors of and that Color by is set to Velocity... and Velocity Magnitude.

c.Ensure Global Range, Auto Range, and Auto Scale are the only enabled Options.

d.Select headless from the Style selection list.

e.Enter 1.9 for Scale.

f.Click to deselect all surfaces from the Surfaces selection list and then select fluid-sym.

g.Click Save/Display and close the Vectors dialog box.

h.Orient the view to display the vectors.

Extra

You can display velocity vectors for the clipped surfaces.

Results → Graphics → Vectors → velocity_vector Edit...

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a.Deselect all surfaces from the Surfaces selection list and then select fluid-sym-x-clip and fluid-sym-y-clip.

b.Click Save/Display.

2.Rotate and adjust the magnification of the view to observe the vortex near the stagnation point and in the wake of the module (Figure 3.9: Velocity Vectors in the Module Symmetry Plane (p. 112)).

Figure 3.9: Velocity Vectors in the Module Symmetry Plane

3.Plot velocity vectors in the horizontal plane intersecting the module (Figure 3.10: Velocity Vectors Intersecting the Surface (p. 114)).

Results → Graphics → Vectors → Edit...

a. Enable Draw Mesh in the Options group box to open the Mesh Display dialog box.

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Setup and Solution

i.Ensure that Faces is enabled in the Options group box.

ii.Retain the selection of board-top and chip from the Surfaces selection list.

iii.Click the Colors... button to open the Mesh Colors dialog box.

A.Select Color by Type in the Options group box.

B.Select wall from the Types selection list.

C.Select light blue from the Colors selection list and close the Mesh Colors dialog box.

iv.Click Display and close the Mesh Display dialog box. b. Enter 3.8 for Scale.

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c.Deselect all surfaces.

d.Select y=0.25in from the Surfaces selection list.

e.Click Display and close the Vectors dialog box.

f.Rotate the view and reduce the magnification to obtain the view as shown in Figure 3.10: Velocity Vectors Intersecting the Surface (p. 114).

Figure 3.10: Velocity Vectors Intersecting the Surface

4.Mirror the image about the chip symmetry plane (Figure 3.11: Velocity Vectors After Mirroring (p. 115)).

View → Display → Views...

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