Restrictor, Entrance

Properties: adiabatic, not isentropic, directional, $ A$-outlet based restrictor

An entrance element is used to model the entry from a large chamber into a gas pipe. For an entrance the value of $ \zeta$ is 0.5. It is described by the following constants (to be specified in that order on the line beneath the *FLUID SECTION, TYPE=RESTRICTOR ENTRANCE 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.