Multiphase Flow for a Fuel Tank: Exercise 8—Analyzing Results
This exercise describes how you analyze the results during and after the simulation. To hide CAD surfaces (not the fluid domain), switch between 
Flow Analysis Bodies and 
CAD Bodies in the Show group. Clear any variable display by selecting No Selection in the Legend drop-down. Click 
XYPlot Panel to view the XY Plot.
Flow Analysis Bodies and CAD Bodies in the Show group. Clear any variable display by selecting No Selection in the Legend drop-down. Click XYPlot Panel to view the XY Plot. | 1. To show/hide selected geometric entities, click  Show in View Panel.2. To change the color scheme, click on  More in the Legend and select between Blue Red and Blue Purple. |
Plotting the Volume Fraction of Fuel in Tank
1. Under Domains select TANK.
2. Click 
XYPlot. A new entity xyplot1 is added in the Flow Analysis Tree under > .
XYPlot. A new entity xyplot1 is added in the Flow Analysis Tree under > .3. Select xyplot1.
4. In the Properties panel, Model tab, set the Variable to Volume Fraction:fuel:[Component]. The plot, as shown above, displays the volume fraction of the fuel filling the tank.
Plotting the Volume Fraction at a Section
 | Volume Fraction  fuel [-]  |
1. In the Flow Analysis Tree, under Results click Derived Surfaces.
2. Select Section 01.
3. In the Properties panel, Model tab, set values for the options as listed below:
◦ Type—Plane Y
◦ Position— –2.615(minus 2.615)
4. In the Properties panel, View tab, for Surface set values for the options as listed below:
◦ Grid—No
◦ Outline—Yes
◦ Variable—Volume Fraction: fuel [-]: Component
Viewing an Isosurface of Points with Volume fraction of Fuel above 0.5
1. In the Post-processing group click 
Isosurface. A new entity Isosurface 01 appears under Derived Surfaces in the Flow Analysis Tree.
Isosurface. A new entity Isosurface 01 appears under Derived Surfaces in the Flow Analysis Tree.2. Select Section 01.
3. In the Properties panel, View tab, set values for the options as listed below:
◦ Grid—No
◦ Outline—No
4. Select Isosurface 01.
5. In the Properties panel, Model tab, set values for the options as listed below:
◦ Isosurface Variable—Volume Fraction: fuel [-]: Component
◦ Type—Above Value
◦ Value—0.5
6. In the Properties panel, View tab, for Surface set a color of your choice and set Outline to No.