# the problem for producing wave

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

 January 28, 2010, 03:57 the problem for producing wave #1 Member   bojiezhang Join Date: Jan 2010 Posts: 64 Rep Power: 7 hello,everyone!I have contacted FLOW-3D recently,when I have set all the element of wave and the intial fluid height,it preprocess well.But after running,their is no wave,the surface of the water remains almost still.I feel upset,and ask for help. thank you in advance!

January 28, 2010, 12:32
#2
Senior Member

michael barkhudarov
Join Date: Mar 2009
Posts: 331
Rep Power: 9
Quote:
 Originally Posted by bojiezhang hello,everyone!I have contacted FLOW-3D recently,when I have set all the element of wave and the intial fluid height,it preprocess well.But after running,their is no wave,the surface of the water remains almost still.I feel upset,and ask for help. thank you in advance!
Hi,

Check the diagnostic output in prpout file. Search for keyword 'wave'. It lists the wave amplitude,period and speed. Make sure it makes sense.

Who did you contact for support?

 January 28, 2010, 13:26 #3 Member   bojiezhang Join Date: Jan 2010 Posts: 64 Rep Power: 7 Thank you for your reply. Last edited by bojiezhang; January 28, 2010 at 13:47.

 February 5, 2010, 21:44 #4 New Member   Join Date: Mar 2009 Location: green earth, blue ocean Posts: 29 Rep Power: 8 I had problem like that and i was solved, here i share of bc my wave \$bcdata wl=6, iwavel=1, waveamp(1)=4., wavefre(1)=12., wr=8, wb=2, wt=5, pbct(1,6)=0., fbct(1,6)=0., \$end ... \$fl nfls=1, fzh(1)=15., remark='initial water level', \$end thanks to Byongjun Park who has help me Thank you

 April 1, 2010, 05:38 #5 Member   bojiezhang Join Date: Jan 2010 Posts: 64 Rep Power: 7 can you show me how can you solver it?I have tried many waves,but some can,some can not,I do not know why?

 April 1, 2010, 11:07 #6 New Member   Join Date: Mar 2009 Location: green earth, blue ocean Posts: 29 Rep Power: 8 can u give me your prepin to analize it?? because i have no problem to running it.

 April 1, 2010, 22:44 #7 Member   bojiezhang Join Date: Jan 2010 Posts: 64 Rep Power: 7 OK! Thank you!

 April 1, 2010, 22:48 #8 New Member   Join Date: Mar 2009 Location: green earth, blue ocean Posts: 29 Rep Power: 8 here, my email: hope Last edited by hans_ina; April 5, 2010 at 09:25. Reason: need more private

 April 3, 2010, 03:05 #9 New Member   kiefer Join Date: Feb 2010 Posts: 7 Rep Power: 7 hi, iam willing to produce a wave in flow3D also. i wonder how if my mesh Cartesian is very huge: nxcelt=10, px(1)=40000., px(2)=1660000., nycelt=10, py(2)=990000., nzcelt=10, pz(1)=20000., pz(2)=230000., py(1)=1.0, Is it possible i produced a wave using this cartesian? Beg for any opinion and suggestion, thx.

 April 3, 2010, 08:21 #10 New Member   Join Date: Mar 2009 Location: green earth, blue ocean Posts: 29 Rep Power: 8 Dear, keafer you should more dense for long range like that (nxcelt=10, px(1)=40000., px(2)=1660000) i usually take the ratio of mesh about 1:10, 1:50, 1:100 its mean for 1 meter i devided by 10,50 or 100 mesh. hope this will help

 April 3, 2010, 08:33 #11 New Member   kiefer Join Date: Feb 2010 Posts: 7 Rep Power: 7 Dear Has_ina i not able to create the mesh according to ratio due to the x,y,z components for the 'STL' i imported are very large and fixed. So, if i reduce the mesh cartesian respect to ratio, the mesh block will totally occupy by the STL. Any other method to overcome this? Regards,kiefer

 April 3, 2010, 08:49 #12 New Member   Join Date: Mar 2009 Location: green earth, blue ocean Posts: 29 Rep Power: 8 dont use auto snap to mesh, make it manually.. if the stl need more smooth use more dense at area stl placed..

 April 3, 2010, 09:03 #13 New Member   kiefer Join Date: Feb 2010 Posts: 7 Rep Power: 7 dear hans_ina, can u guide me that where to increase the dense?

 April 5, 2010, 09:27 #14 New Member   Join Date: Mar 2009 Location: green earth, blue ocean Posts: 29 Rep Power: 8 dear kiefer you can increase it with adding number of cell in meshing tab

 April 5, 2010, 09:38 #15 New Member   kiefer Join Date: Feb 2010 Posts: 7 Rep Power: 7 Dear Hans_ina i see, i will mek it a try. however, i doubt it that wat i had done , there is no wave coming out after i set the wave amplitude also. May i post my prepin here and beg some comment from u? Regards, kiefer

 April 5, 2010, 09:50 #16 New Member   Join Date: Mar 2009 Location: green earth, blue ocean Posts: 29 Rep Power: 8 u have use wave b/c at inlet and outlet as outflow (checklist the allow fluid to enter)

 Tags no wave

 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 Shane FLUENT 1 September 3, 2010 02:32 chandrakanth Main CFD Forum 0 December 6, 2008 03:27 Phanindra FLUENT 5 April 17, 2007 09:57 Frank Main CFD Forum 5 March 14, 2007 11:56 san FLUENT 2 April 3, 2006 23:37

All times are GMT -4. The time now is 06:13.