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Natural Convection: Exercise 8—Analyzing Results
This exercise describes how the results are analyzed during and after the simulation. To hide CAD surfaces (not the fluid domain), switch between CAD Bodies and Flow Analysis Bodies.
Viewing the Temperature Contours on a Boundary
Temperature: [K] : Heat
373
327.0
1. Under Domains, select CONCENTRIC_ANNULUS.
2. In the Properties panel, View tab, for Surface, set values for the options as listed below:
SurfaceYes
GridNo
OutlineNo
VariableTemperature: [K] : Heat
Min—327
Max—373
Plotting the Temperature at the Monitoring Point
1. In the Flow Analysis Tree, under Results, click Monitoring Points..
2. Select Point01, Point08, Point10.
3. Click XYPlot. A new entity xyplot1 appears in the Flow Analysis Tree under Results > XY Plots
4. Click xyplot1.
5. In the Properties panel, View tab, for Surface, set Variable to Temperature: [K]: Heat.
Viewing the Streamlines at the Domain
Velocity Magnitude: [m/s] : Flow
0.074
0
1. In the Post-processing group, click Stream Lines. Under Results > Streamlines, Streamline 01 is selected.
2. In the Properties panel, Model tab, select the following values for the options listed:
Line Thickness—0.0002
Animation Time Size—0.05
3. In the Properties panel, View tab, under Surface, select the following values for the options listed:
VariableVelocity Magnitude: [m/s] : Flow
Min—0.0
Max—0.74
4. In the Flow Analysis Tree, under General Boundaries select inner_surface, bottom_surface, and top_surface.
5. In the Properties Panel, Model tab, for Streamline, set Release Particle to Yes and Number of Particles to 100.
Validation
The temperature prediction along the radial direction on both the upper and lower symmetry walls are compared with experimental data from Kuehn & Goldstein.