|March 18, 2009, 06:43||
Volume fraction calculation- multiphase
Join Date: Mar 2009
Location: Blacksburg, US
Posts: 3Rep Power: 9
I wish to check results for a turbulent flow in a pipe with gas/water phases, with velocity inlet/mass flow inlet bc's.
First of all, is it possible to use mass flow inlet bc for eulerian model?
and, how does the calculation go for getting equivalent mass flow rates for each phase if you know the velocity of each phase and the VF?
I understand that, VF is the ratio of gas flow rate to the total flow rate.( Can I assume it to be area fraction ? If so, kindly answer me keeping 2-d axisymmetric case, inlet section in mind)
From the above said input values,
you can get area for gas as,
A_g = A_p/(1/VF + Vl/Vg - 1) A_p= pipe area, A_g= gas area
From this you calculate mass flow rate equal to V_g A_g rho_g.
Does this make sense or is there any easier path than what I say here?
|Thread||Thread Starter||Forum||Replies||Last Post|
|Volume fraction to mass fraction||Torsaki||CFX||9||February 21, 2015 11:46|
|multiphase... solid volume fraction anomaly||Tim||CFX||4||February 14, 2012 05:01|
|Scaling volume fraction in Multiphase flows||CFDtoy||Main CFD Forum||1||November 5, 2008 08:26|
|Volume Fraction Calculation||simone Marras||Main CFD Forum||2||December 6, 2006 18:26|
|How set volume fraction and species mass fraction||Reginaldo Cotto||FLUENT||0||August 31, 2006 04:58|