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Restrictor, Exit
An exit element is used to model the exit from a gas pipe into a large
chamber. For an exit the value of 
is 1. It is described by the following constants (to be specified in that order on
the line beneath the *FLUID SECTION, TYPE=RESTRICTOR
EXIT card):
- cross section of the exit
.
- hydraulic diameter
defined by 
where 
is the
perimeter of the cross section.
- number of the upstream element; this element must be of type GAS PIPE
- oil mass flow in the restrictor (only if the OIL parameter is used to define the kind of oil in the *FLUID SECTION card)
By specifying the parameter LIQUID on the *FLUID SECTION card the loss is calculated for liquids. In the absence of this parameter, compressible losses are calculated.
guido dhondt 2011-03-26