CFD Online Discussion Forums

CFD Online Discussion Forums (http://www.cfd-online.com/Forums/)
-   CFX (http://www.cfd-online.com/Forums/cfx/)
-   -   Two phase convergence problem (http://www.cfd-online.com/Forums/cfx/22903-two-phase-convergence-problem.html)

Kjetil W July 31, 2006 05:43

Two phase convergence problem
 
Hi. I'm simulating a two phase(gas and liquid) flow through some piping that consists of some bends and different pipe-sizes(mostly 12", 10", 8").

Total massflow: 75 kg/s

Volume Fraction= 0,3(liquid) and 0,7(gas)

Op.pressure=8bar

Op.temp=80C

Density liquid=920kg/m3

Molar mass gas= 25

Kinematic viscosity=15cSt (@80C)

I have troubles with getting a good convergence. Since this is my first multiphase simulation, I am wondering if there is any common mistakes to do in multiphase sim. I'm not sure about the morphology either. I have tried with both phases as continuous, and with gas as dispersed. How will this affect the results? Im looking for the pressure drop through the piping.



All times are GMT -4. The time now is 08:10.