CFD Online Logo CFD Online URL
Home > Forums > General Forums > Main CFD Forum

Two phase flow models

Register Blogs Members List Search Today's Posts Mark Forums Read

LinkBack Thread Tools Search this Thread Display Modes
Old   May 2, 2002, 03:59
Default Two phase flow models
Posts: n/a
Hi Folks, Does anyone know if the mechanistic two phase flow models for prediction of liquid holdup, flow pattern and pressure gradient based on Taitel & Dukler's 1976 paper take into account the transient aspects of two phase flow? By this I mean that in a pipe of say, a few hundred metres length and of constant diameter, if there is a dispersed bubble flow initially the forces acting on the phases will at some point mean that the flow pattern will change to some other pattern. If the models can do this, can anyone give me any tips on how to implement this dynamic aspect?
  Reply With Quote

Old   May 2, 2002, 09:26
Default Re: Two phase flow models
Posts: n/a

i don't know if i can help but let us try. as i can see you've a phase change, are you modelling something related to oill engineering if so think of drift flux model & there is a good ref. to look

Wallis, G.B., One-dimensional two-phase flow, McGraw-Hill, New york 1969 may be this will help. what is on Taitel & Dukler's 1976 paper. is there something like P1=P2 ,equal pressure model.


  Reply With Quote

Old   May 7, 2002, 03:49
Default Re: Two phase flow models
Posts: n/a
Hi, This is related to oil engineering, but is applicable for any Newtonian two phase flow in pipes. However, there is no phase change in my case, just incompressible gas & liquid.

Thanks for the Wallis reference, I will look into the drift-flux model.

Taitel & Dukler's model predicts the liquid holdup, the flow pattern and subsequent frictional pressure drop for that flow pattern, trouble is, it seems to assume that flow pattern it predicts is present along the whole length of the pipe, no matter how long! This cannot happen in reality as two phase flow is a dynamic phenomena.

  Reply With Quote


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
mass flow in is not equal to mass flow out saii CFX 12 March 19, 2018 05:21
behavior of two phase flow in a pipe Sonia84 FLUENT 5 September 17, 2013 16:31
Two Phase Flow Problem miner15kick CFX 5 October 28, 2010 18:03
Two phase flow in a distributor Mohsin FLUENT 5 May 24, 2010 02:57
Two phase flow with condensation Sunnie FLUENT 0 May 31, 2009 10:02

All times are GMT -4. The time now is 21:06.