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

Oh I thought I was trying to do something stupidly simple to start with... grrrr

Register Blogs Community New Posts Updated Threads Search

 
 
LinkBack Thread Tools Search this Thread Display Modes
Prev Previous Post   Next Post Next
Old   January 3, 2013, 05:29
Default Oh I thought I was trying to do something stupidly simple to start with... grrrr
  #1
DDB
New Member
 
DDB
Join Date: Jan 2013
Posts: 12
Rep Power: 13
DDB is on a distinguished road
ok, this is ridiculously stupid and I am unbelievably frustrated... I am a newbie to foam and I can't see me sticking around for long if this continues!

I have v2.1.1 installed, the official rpm for f17.

I have a channel, 15ftx7.5ftx3ft, a stupidly coarse grid for testing purposes of just over 21k cells. I have modified the file from the lid driven cavity to produce my channel in blockMesh.

I am using simpleFOAM.

I have done loads of tutorials, the problems arise when I try to do my own stuff

I want to have a velocity inlet and a pressure outlet. I want my velocity to be a positive (say 70m/s in x direction).

I have no patience with paraview, it seems totally unintuitive to me, so I am converting to fluent to check things as this works for me.

Why does my velocity inlet read into fluent as a pressure outlet?

Why does my pressure outlet velocity always end up equalling the exact negative of the velocity inlet when I have 'run' the simulation?

I can get things to work perfectly when I create the initial mesh in blockmesh, read into fluent, change the bits that are totally wrong, save as a case, convert back to foam and then run - but what good is that if I want to use free software?????

Please, someone, what is going on here?
DDB is offline   Reply With Quote

 


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
TimeVaryingMappedFixedValue irishdave OpenFOAM Running, Solving & CFD 32 June 16, 2021 06:55
SIMPLE algorithm in 3D cylindrical coordinates zouchu Main CFD Forum 1 January 20, 2014 17:02
Problem in running ICEM grid in Openfoam Tarak OpenFOAM 6 September 9, 2011 17:51
Start star ccm+ remotely with mpiexec Dagnir Siemens 0 November 24, 2010 12:33
Lets start the public domain CFD-Project! Heinz Wilkening Main CFD Forum 3 March 11, 1999 22:55


All times are GMT -4. The time now is 02:10.