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Two Phase Flow

line sizing two phase flow lockhart martinelli

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#1 sahilchaudhary10


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Posted 09 October 2019 - 04:27 AM

Respected Sir / Mam,


I have a doubt regarding line sizing of two phase flow i.e. Gas-Liquid flow. 

I am trying to match given excel sheet results from Manual calculations done by me.

I have used Lockhart Martinelli correaltion to calculate pressure drop. 


Please confirm me the :

1 . Two phase pressure drop

2 . Use of Coefficient "C" and its physical significance

(I have used D'arcy equation to calculate liquid and gas pressure drop and Churchill relation for Darcy friction factor calculation)


Parameters are as follows: 


Mass flowrate : 101274 kg/hr

Molecular weight : 9.53

z : 1.029

Viscosity : 0.021 cP

Density : 12.56 kg/m3

Cp/ Cv :1.216




Mass flowrate : 477939 kg/hr

Density : 689.6 kg/m3

Viscosity : 0.3 cP


Diameter assumed and checked criteria :

24 inch



Kindly inform me for some missing data

Help me with Delta P in bar/km.





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Posted 08 November 2019 - 07:38 AM

Someone could tell me a good literature with sequence calculation so that I can generate a two-phase flow calculation spreadsheet. The Lummus standard part III book is still reliable. If this literature is reliable, where could I get it?

#3 Bobby Strain

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Posted 08 November 2019 - 11:15 AM

You can visit my website where you will find an application to calculate 2-phase pressure drop. You can also purchase software by Harvey Wilson.



#4 breizh


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Posted 08 November 2019 - 07:32 PM


literature to support your work .

If you use the search engine in this forum  you will find more information.







Good luck


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Edited by breizh, 09 November 2019 - 05:19 AM.

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