Download PyroSim User Manual - Thunderhead Engineering

Running the Simulation
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Thickening: Controls whether objects are allowed to be thin.
o Allow thin obstructions [default]: Allows objects to become thin as shown in Figure
18.7. This may be overridden for obstructions by turning on Thicken in the obstruction
properties dialog.1
o Force all obstructions to be thickened: Prevents all obstructions from becoming thin.
Merge objects with identical properties [default=true]: Allows blocks to be merged across
source objects if their resulting blocks have similar properties. For instance, if this is true and
two walls are drawn with similar properties, their converted blocks will be merged into the same
group or composite object. This can further reduce the number of resulting objects.
o Separate disjoint objects [default=true]: Prevents objects’ block from being merged if
their blocks do not touch.
o Ignore names while merging [default=false]: Controls whether names are considered
when determining whether objects are “similar.”
Figure 18.6. Merging converted blocks
Figure 18.7. Effect of thickening on converted blocks
Misc Tab
This tab allows some miscellaneous simulation and model properties to be set.
1
FDS does not allow thin obstructions to have vents attached to them.
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