CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > FLUENT

I am NOT getting right pressure at the air inlet in water column

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

Reply
 
LinkBack Thread Tools Display Modes
Old   November 25, 2012, 00:14
Default I am NOT getting right pressure at the air inlet in water column
  #1
New Member
 
yes
Join Date: Aug 2011
Posts: 4
Rep Power: 5
kcfd is on a distinguished road
Problem Description:

Find the static pressure at the air inlet which is at the bottom in steady state condition for the container is completely filled with water initially. Kindly refer the attached picture for the problem understanding.

Simulated Condition:

1. Software Used: Ansys Fluent
Eulerian Multiphase Model: 2 Phase (Primary phase: water, secondary phase water with 0.0002mm dia)
2. Inlet Bounadry Condition: Air Velocity (very high velocity) with VOF 1; water velocity with 0 m/s
3. Outlet boundary condition: Pressure Outlet (0 gauge pressure and VOF 1 for secondary phase back flow)
4. Initial Condition: Entire domain is completely filled with water: VOF=1
5. Decent mesh size is there to capture the effect of velocity gradients

5. Solved by steady state and transient as well.

5. After solving, I obtained negative pressure when I did post processing with CFD post. But it should be of any negative pressure at the inlet in reality.

Kindly help if there is any problem in my boundary condition set up or multiphase model selection. Thanks in advance.

Thanks& Regards, Raj
Attached Images
File Type: jpg Problem Description.jpg (26.9 KB, 2 views)
kcfd is offline   Reply With Quote

Reply

Thread Tools
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 On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
"Pressure Inlet" Boundary Setup Wijaya FLUENT 13 April 11, 2013 08:50
Pressure for wave height in an Water Wave Tank Cluain CFX 5 July 11, 2012 09:50
Pressure Inlet Boundary Condition Issue zoeburton1987 FLUENT 0 May 15, 2012 09:20
Neumann pressure BC and velocity field Antech Main CFD Forum 0 April 25, 2006 02:15
Help!!!problems in air jet into water bath kim FLUENT 4 June 9, 2003 07:04


All times are GMT -4. The time now is 13:50.