CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Software User Forums > OpenFOAM > OpenFOAM Running, Solving & CFD

divergence in two-phase air-water flow in vertical-horizontal elbow

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   January 10, 2019, 08:27
Default divergence in two-phase air-water flow in vertical-horizontal elbow
  #1
New Member
 
elahe mirzade
Join Date: Apr 2017
Posts: 2
Rep Power: 0
E.Mrz is on a distinguished road
I am working on a tow-phase air-water flow in an elbow. The interFoam is implemented for simulation. In zero time the elbow is full of water, and then from inlet both water and air are injected. There is gravity in the opposite direction of inlet flow . My problem is that the gas flow does not go out from outlet. It goes next to the outlet and then divergence occurs.
I don't know if the problem is with p_rgh or alpha boundary conditions or something else. Some of them written below. Air is injected from inlet1 and water is injected from inlet2.

I would be thankful if anyone could help. Thank you

boundary condition for p_rgh is:

internalField uniform 0;

boundaryField
{
inlet1
{
type zeroGradient;
}

inlet2
{
type zeroGradient;
}

outlet
{
type fixedValue;
value uniform 0;

}

Wall
{
type fixedFluxPressure;
gradient uniform 0;
value uniform 0;
}
}

boundary condition for water phase fraction(alpha.water) is:

internalField uniform 1;

boundaryField
{
inlet1
{
type fixedValue;
value uniform 0;
}

inlet2
{
type fixedValue;
value uniform 1;
}

Wall
{
type zeroGradient;
}

outlet
{
type inletOutlet;
inletValue uniform 0;
value uniform 0;
}

}
E.Mrz is offline   Reply With Quote

Reply

Tags
air, elbow, interfoam, openfoam, water

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
interFoam two-phase pipe flow air phase behaviour katete OpenFOAM Running, Solving & CFD 11 February 3, 2021 04:14
No liquid water exist in my Fuel Cell simulation fatchang FLUENT 19 October 15, 2018 15:27
Water flow due to natural convection in vertical pipe Audrius FLUENT 0 April 15, 2018 08:34
Can people model 2 phase fluid flow (air water) in 6 mm tubing? gaiatechnician Main CFD Forum 0 August 25, 2015 15:20
Boundary condition of velocity and pressure at interface for air water pipe flow jignesh_thaker2007 OpenFOAM Running, Solving & CFD 7 June 19, 2014 11:12


All times are GMT -4. The time now is 14:03.