CFD Online Logo CFD Online URL
Home > Forums > OpenFOAM Running, Solving & CFD

Lesser than reference pressure in InterFOAM

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

LinkBack Thread Tools Display Modes
Old   March 9, 2017, 15:58
Default Lesser than reference pressure in InterFOAM
shashank moghe
Join Date: Feb 2015
Posts: 32
Rep Power: 4
smog is on a distinguished road
Hello all,

I am setting my outlet pressure to 1e5. This should set the reference pressure for my domain. My mesh does not have dynamic motion (I have implemented acceleration addition to the gravity term to mimic the dynamic motion of my domain). There is a no slip BC for U at the walls and another patch P1. I am interested in monitoring the pressure on P1.

The problem I face - I see negative (less than 1e5) pressure at the patch for a part of the cycle (the acceleration I add to the 'g' term mimics a cycle with a fixed amplitude).

I understand that the incompressible fluid draws from the static pressure as per the Bernoulli's eqn. But since at the wall, the velocity is zero, all the dynamic pressure should get converted to static pressure - then why do I see negative gage pressure?

Any help will be appreciated. I am working with OF 2.4.x.
smog is offline   Reply With Quote


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
CFX Solver stopped with error when requested for backup during solver running Mfaizan CFX 40 May 13, 2016 06:50
Compression stoke is giving higher pressure than calculated nickjuana CFX 62 May 19, 2015 13:32
OpenFoam-1.7.x on Suse 11.2 (64bit) does not compile val46 OpenFOAM Installation 4 August 27, 2010 03:43
Error with Wmake skabilan OpenFOAM Installation 3 July 28, 2009 00:35
G95 + CGNS Bruno Main CFD Forum 1 January 30, 2007 01:34

All times are GMT -4. The time now is 17:13.