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

A Physical Anomaly in tutorials/interFoam/laminar/damBreak

Register Blogs Community New Posts Updated Threads Search

 
 
LinkBack Thread Tools Search this Thread Display Modes
Prev Previous Post   Next Post Next
Old   March 21, 2014, 23:13
Exclamation A Physical Anomaly in tutorials/interFoam/laminar/damBreak
  #1
Member
 
xuhe-openfoam
Join Date: Aug 2013
Location: DaLian,china
Posts: 82
Rep Power: 12
bieshuxuhe is on a distinguished road
Hello , everyone !
I found a Physical Anomaly in tutorials/interFoam/laminar/damBreak case !

I didn't modification any other thing except for the regions in setFieldsDict ! That is :

regions
(
boxToCell
{
box (0 0 -1) (1.1461 0.292 1);
fieldValues
(
volScalarFieldValue alpha1 1
);

This just fill up the tank about halfway with water. Then began to compute.
Certenly, it is in a condition of rest ! So the Pressure and Velocity should be arround zero .
But I found the wave amplitude of Pressure and Velocity is bigger and bigger in the course of time! Though the amplitude of Pressure and Velocity is still very small, it becomes bigger when there is no energy input !
I think it is a wrong numerical result!

could you help me ? How to solve this problem!
thanks!
Attached Images
File Type: jpg 01.jpg (79.3 KB, 15 views)
bieshuxuhe is offline   Reply With Quote

 

Tags
nonconservation of energy


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
[Gmsh] Version 20 of the bmshb file format to FOAM converter 7islands OpenFOAM Meshing & Mesh Conversion 36 February 9, 2019 22:47
Superlinear speedup in OpenFOAM 13 msrinath80 OpenFOAM Running, Solving & CFD 18 March 3, 2015 05:36
Partition does not start on physical sector boundary!!?? immortality Lounge 1 December 8, 2013 15:04
[Gmsh] 2D Mesh Generation Tutorial for GMSH aeroslacker OpenFOAM Meshing & Mesh Conversion 12 January 19, 2012 03:52
OpenFOAM 13 AMD quadcore parallel results msrinath80 OpenFOAM Running, Solving & CFD 1 November 10, 2007 23:23


All times are GMT -4. The time now is 15:23.