flp: Flp Combined liquid pressure recovery factor

In ratral/hyd4gpv: General Purpose Valve functions

Description

When a valve is installed with reducers or other attached fittings, the liquid pressure recovery of the valve-fitting combination is not the same as that for the valve alone. For calculations involving choked flow, it is convenient to treat the piping geometry factor (fp) and the fl factor for the valve-fitting combination as a single factor, flp.

Usage

flp(kv, fl, dn, d1, d2)

Arguments

kv	Flow coefficient in m3/h
fl	Liquid pressure recovery factor of a control valve without attached fittings
dn	diameter in millimeter (mm).
d1	Inlet diameter reducer only in millimeter (mm).
d2	Outlet diameter increase only in millimeter (mm).

Value

Product of the liquid pressure recovery factor of a valve with attached fittings (no symbol has been identified) and the piping geometry factor, dimensionless.

Examples

flp(kv = 7247.229, fl = 0.9, dn =0.5, d1 = 0.6, d2 = 0.6)

ratral/hyd4gpv documentation built on Feb. 5, 2022, 10:30 p.m.