CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Software User Forums > OpenFOAM > OpenFOAM Community Contributions

[swak4Foam] Setting BC for a passive scalar (groovy vs fvOptions)

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   May 23, 2013, 15:53
Default Setting BC for a passive scalar (groovy vs fvOptions)
  #1
Super Moderator
 
Tobi's Avatar
 
Tobias Holzmann
Join Date: Oct 2010
Location: Bad Wörishofen
Posts: 2,711
Blog Entries: 6
Rep Power: 52
Tobi has a spectacular aura aboutTobi has a spectacular aura aboutTobi has a spectacular aura about
Send a message via ICQ to Tobi Send a message via Skype™ to Tobi
Hi all,

in the attachement you can se a simple geometry and the value of the passiv scalar I added.

For the inlet BC I used groovy in a not very comfortable way
To get the three seperated inlets I had to build a BC like that:

Code:
    inlet
    {
        type            groovyBC;
        value           $internalField;
        valueExpression "pos().y>-0.04 ? ( pos().y < -0.035 ? (pos().x<0.002 ? pos().x > -0.002 ? 1 :0 :0 ) : ( pos().y > -0.002 ? pos().y < 0.002 ? (pos().x<0.002 ? pos().x > -0.002 ? 1 :0 :0 ) : (pos().y > 0.035 ? pos().y < 0.04 ? (pos().x<0.002 ? pos().x > -0.002 ? 1 :0 :0 ) : 0: 0) : 0)) : 0";
        valiables       "";
    }
As you can see its a very strange and confusing BC-declaration.
So the question is, if its possible to do that in a easier way.

Maybe with the new fvOptions in 2.2.x like here: http://www.openfoam.org/version2.2.0...processing.php

Code:
new scalarTransport - enables the solution of a scalar transport equation,       where the scalar can be specified using via boundary conditions, or using       the new fvOptions framework. The following images show the time       evolution of three point sources added to the pitzDaily tutorial       case:
As I see in the pictures it is possible to set a passive scalar with fvOptions with no additonal work on modifying a solver!

Can someone give me an advice or hint, link or something like that?

Thanks all

Tobi
Attached Images
File Type: jpg groovy.jpg (10.7 KB, 38 views)
Tobi is offline   Reply With Quote

Reply

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
solving passive scalar by user function in AVLFIRE huyp Main CFD Forum 0 September 4, 2008 11:21
Passive Scalar Andy R FLUENT 0 January 10, 2007 15:49
starwatch & passive scalar isidro Siemens 1 June 25, 2005 00:59
Mixing of a passive scalar Maged Ismail FLUENT 0 June 10, 2005 10:09
Warning 097- AB Siemens 6 November 15, 2004 05:41


All times are GMT -4. The time now is 14:09.