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Restrictor, Enlargement

Properties: adiabatic, not isentropic, directional, inlet based restrictor

Figure 97: Geometry of an enlargement

The geometry of an enlargement is shown in Figure 97. It is described by the following constants (to be specified in that order on the line beneath the *FLUID SECTION, TYPE=RESTRICTOR ENLARGEMENT card):

The loss coefficient for an enlargement is taken from [33].

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.

Example files: piperestrictor, restrictor, restrictor-oil.

guido dhondt 2018-12-15