# Vof Wave

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

 September 22, 2009, 06:41 Vof Wave #1 New Member   Andrea Cicalini Join Date: Sep 2009 Posts: 13 Rep Power: 9 Sponsored Links I'm doing a thesis about 6 Dof body (an Hull) and waves of first order with STAR CCM+ v4.04.The wave diffuses quickly and become a flat wave in the control field. I put the boundaries of velocity inlet in every external face of dominio except for the face behind the hull where i put pressure outlet.I set a timestep of 0.01 sec. The wave has a lenght of 20 m, amplitude 1 m,current and wind 2,5 m/s. Do you have an idea to solve this problem? Thank You Last edited by cicagol; September 23, 2009 at 08:42.

September 23, 2009, 08:54
#2
New Member

Andrea Cicalini
Join Date: Sep 2009
Posts: 13
Rep Power: 9
It's the first part of summary report
Attached Files
 Summary Report 1.pdf (75.7 KB, 127 views)

September 23, 2009, 08:58
#3
New Member

Andrea Cicalini
Join Date: Sep 2009
Posts: 13
Rep Power: 9
the second part
Attached Files
 Summary Report 2.pdf (48.1 KB, 42 views)

September 23, 2009, 08:58
#4
New Member

Andrea Cicalini
Join Date: Sep 2009
Posts: 13
Rep Power: 9
the third part
Attached Files
 Summary Report 3.pdf (78.7 KB, 42 views)

September 24, 2009, 11:25
#5
Senior Member

Join Date: Mar 2009
Posts: 203
Rep Power: 11
Quote:
 Originally Posted by cicagol Do you have an idea to solve this problem?
That the wave becomes flat quickly?

 September 24, 2009, 11:36 #6 New Member   Andrea Cicalini Join Date: Sep 2009 Posts: 13 Rep Power: 9 Yes...I think it's a problem of approssimation...a first order wave has limits and i can't have a wave of certain features with the first order

 September 24, 2009, 11:38 #7 Senior Member   Join Date: Mar 2009 Posts: 203 Rep Power: 11 Why only first order?

 September 24, 2009, 11:42 #8 New Member   Andrea Cicalini Join Date: Sep 2009 Posts: 13 Rep Power: 9 Not only first order...but i'm studying first order...with first order I mean first order of Stokes approssimation theory

 September 24, 2009, 11:50 #9 Senior Member   Join Date: Mar 2009 Posts: 203 Rep Power: 11 Ahh ok. That's down my alley Maybe this helps you: http://www.flow3d.com/resources/news...mmer09_02.html

 September 24, 2009, 11:53 #10 New Member   Andrea Cicalini Join Date: Sep 2009 Posts: 13 Rep Power: 9 Thank You, I've already seen this yesterday...it's the reason i wrote that first order have some limits

 September 24, 2009, 12:18 #11 Senior Member   Join Date: Mar 2009 Posts: 203 Rep Power: 11 Ok, then I understand your posting right. Again what is your problem?

 September 24, 2009, 12:21 #12 New Member   Andrea Cicalini Join Date: Sep 2009 Posts: 13 Rep Power: 9 In this moment nothing, i'm simulating a new wave and tomorrow i'll see the result...So i'm waiting...

 September 28, 2009, 03:13 #13 New Member   Andrea Cicalini Join Date: Sep 2009 Posts: 13 Rep Power: 9 After three days of simulation, 64 sec. in simulation time...it's all good

 September 28, 2009, 04:29 #14 Senior Member   Join Date: Mar 2009 Posts: 203 Rep Power: 11 Sounds good.

 Thread Tools Display Modes Linear Mode

 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 OffTrackbacks are On Pingbacks are On Refbacks are On Forum Rules

 Similar Threads Thread Thread Starter Forum Replies Last Post A8anato_psofimi FLUENT 2 November 10, 2009 15:42 MAB Siemens 7 November 17, 2008 22:34 MAB FLOW-3D 2 November 14, 2008 01:02 Colin CFX 0 May 26, 2005 02:58 Colin FLUENT 0 May 26, 2005 02:56