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When post-processing with CFD-VIEW, one may wish to
display two different variables on two different
objects. This requires the use of two legends to
correspond to the different color mapping of the
variables. The legend tracking feature in CFD-VIEW
can be used to achieve this. If this topic is of
interest to you, please read on.
Legend Tracking
A thermal plasma torch case that includes the effects
of radiation heat transfer is used to demonstrate the
feature of legend tracking.
For example, the user wishes to display the magnetic
vector potential, represented by symbol Az_r in units
of Wb/m, in the solid volume conditions named
‘Coil_1’, ‘Coil_2’, and
‘Coil_3’ and the fluid volume condition
named ‘Coil-Fluid.’ At the same time, say
the user plots the temperature, represented by symbol
T in units of K, in the fluid volume conditions
called ‘Quartz’ and ‘Fluid.’
To show the range of values for the variables Az_r
and T respectively, two legends are needed.
Perform the following steps in CFD-VIEW to create two
legends with different tracking.
- Control select (Ctrl-select) the objects named
‘Coil_1’, ‘Coil_2’,
‘Coil_3’ and
‘Air'’, and pick the variable
‘Az_r’ from the color variable
list. Select the ‘Smooth
Surface’ attribute for shading the
selected objects with the magnetic vector potential
Az_r.
Figure 1. Magnetic Vector Potential
display
- Turn on the ‘Legend’ from
the operator palette. Right-click on the legend and
uncheck the ‘Track Active Map’
option. Turning off this feature ensures that the
legend for the magnetic vector potential variable
does not switch to temperature when plotting the
temperature variable on other objects.
Figure 2. Legend tracking
- Control-select (Ctrl-select) the objects named
‘Quartz’ and
‘Argon’, and pick the variable
‘T’ from the color variable list. Select
the ‘Smooth Surface’ attribute
for shading the selected objects with the
temperature. Pick a different colormap for the
temperature from the colormap/samples panel
to contrast the contours of temperature from those of
the magnetic vector potential. Create another legend
for the temperature.
Figure 3. Temperature and Magnetic
Vector Potential display
You can find the file used in this user tip in the
CFD Model Library section
here.
If you have any questions about this topic or would
like us to discuss other topics in the future, please
let us know.
Regards,
ESI CFD Support Team
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