# gas-liquid slug flow in horizontal pipe

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

 January 21, 2013, 23:01 #21 Senior Member   Vaze Join Date: Jun 2009 Posts: 171 Rep Power: 15 Hi Kanarya What is difference between the velocity at exit and inlet? Will it remain constant? - if yes then check UDF or inlet velocity remain small and constant irrespective of exit velocity - then you can not use Adjust function because this function might not be updating the inlet velocity at every iteration. Hence you will have to implement the updates in inlet velocity with some additional macros or loops. Best wishes Mvee

 July 15, 2014, 06:35 people help me #22 New Member   modheji Join Date: Jul 2014 Posts: 4 Rep Power: 10 Hi guys. I am student . I want to simulate solid-Gas flow (two Phase) in Horizontal pipe by Fluent and in next step I want to make it and compare all result .It is very important for me. I try to simulate in fluent but unfortunately I couldn't. Could you please help me for design. ( please step by step or in a complete example ) Ex: 1- Define>model>multiphase 2-Define>... 3-... )!!! with best wishes Modheji

 January 26, 2020, 05:55 #23 New Member   hella Join Date: Dec 2019 Location: Tunisia Posts: 10 Rep Power: 4 I'm working on a horizontal air-water confined flow, and I got the slug flow. The problem is when the slug hits the upper part of the channel and blocks the air, this air must return as I think. But it doesn't. Do you have an explanation for this? I'm sure that the air doesn't return because the air BC is velocity inlet, but I really want to understand where did the air goes once a slug blocks its passage to the outlet? I'll be grateful if you help me. Thanks

January 26, 2020, 05:57
#24
New Member

hella
Join Date: Dec 2019
Location: Tunisia
Posts: 10
Rep Power: 4
Quote:
 Originally Posted by kbaker Slug can obtained from stratified flow but the point of transporting stratified to slug depend on the phase velocities (especially higher gas velocity give slug flow) hence if you get stratified flow successfully just increase the gas velocity then with progress of the run with time you will get it? furthermore you need to check the range of your phase velocities that fulfill slug flow refer to any flow regime map to check it and I prefer that given by Taitel & Duckler Flow regimes map for horizontal pipes. kbaker
Hey Mr Kbaker,
I'll be happy if you help me.
I'm working on a horizontal air-water confined flow, and I got the slug flow. The problem is when the slug hits the upper part of the channel and blocks the air, this air must return as I think. But it doesn't. Do you have an explanation for this?
I'm sure that the air doesn't return because the air BC is velocity inlet, but I really want to understand where did the air goes once a slug blocks its passage to the outlet?

I'll be grateful if you help me.

Thanks

 Tags gas-liquid, horizontal pipe, slug, two-phase, volume fraction

 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 OffTrackbacks are Off Pingbacks are On Refbacks are On Forum Rules

 Similar Threads Thread Thread Starter Forum Replies Last Post Abe FLUENT 0 March 29, 2007 09:01 tahar Phoenics 6 November 3, 2003 12:03 Rakib FLUENT 8 June 18, 2002 01:58 ram Main CFD Forum 5 June 17, 2000 21:31 DS & HB Main CFD Forum 0 January 8, 2000 15:00

All times are GMT -4. The time now is 12:01.