Two Phase Press Drop

Two Phase Pressure Drop in Piping

	The frictional pressure drop calculation presented here applies to steady-state, isothermal two phase pipe flow of incompressible Newtonian fluids. The procedure is based on the "Baker" correlations and flow regime maps. The procedure automatically handles the complete range of industrially used steel pipe sizes and schedules.
	A more comprehensive and powerful version of this procedure is available online through the Process Associate's clients gateway (password required). WWW-based and stand-alone versionsof the full program for Windows 3.1x/95/NT and Unix operating systems are available through their coordination office. The full version of this procedure is part of their Process Designer® line of intelligent software.
	For your convenience, The input form below has several multiple choice fields {using radio buttons} with one field already selected as default. Please make sure that you always mark the proper button corresponding to your input if it is different from the default.


Gas / Vapor Flowrate
	Mass Basis
	Volume Basis
	Superficial Velocity Basis

Gas / Vapor Physical Properties
	Density
	Viscosity

Liquid Flowrate
	Mass Basis
	Volume Basis
	Superficial Velocity Basis

Liquid Physical Properties
	Density
	Viscosity
	Surface Tension

Piping
Orientation
Length
Diameter	Nominal, inches ⁽¹⁾	Schedule⁽²⁾
Diameter	Inside / equivalent

Report:
Pressure Drop in

For commercial steel pipes only.

The schedule list is all inclusive. Hence, some of the pipe schedules shown are not available for every nominal pipe size. If you select an invalid nominal pipe size and schedule combination, the server will return a list showing which schedules are available for the nominal pipe size you specified. We apologize for this awkward behavior but it is due to current HTML and browser technology limitations.