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Restrictor, Wall Orifice

Figure 77: Geometry of a wall orifice
\begin{figure}\epsfig{file=Long_orifice_wall.eps,width=11cm}\end{figure}

The geometry of an wall orifice is shown in Figure 77. It is described by the following constants (to be specified in that order on the line beneath the *FLUID SECTION, TYPE=RESTRICTOR WALL ORIFICE card):

The loss coefficient for a wall orifice is taken from [28].

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 2012-10-06