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Old   May 1, 2010, 11:02
Default A big problem about scour around pile
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bojiezhang
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hello everyone:
I have a big problem about scour around pile.The sand aroud the pile was scoured quickly by the water.I do not which parameter I set wrong or where I misset.Ask for help,thank you for advance!
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Old   May 2, 2010, 16:19
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michael barkhudarov
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The critical Shields can be reduced to slow down erosion.
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Old   May 2, 2010, 19:22
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dear friend bojiezhang
i am beginner with flow 3d and i want to learn more
can you send me your model so i can learn from it
please send me the full model ( geometry, prepinp,....)
i hope you accept helping me
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Old   May 2, 2010, 22:22
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Quote:
Originally Posted by MuxaB View Post
The critical Shields can be reduced to slow down erosion.
Dear MuxaB:
Thank you for your reply,I know the meaning of critical shields parameter,but how about others,such as parameters'critical sediment fraction,cohesive sediment fraction and soure erosion adjustment'.The parameters in intial fluid 'sediment concentration---suspended and packed' also confused me,could you tell me the meaning of them and how to define them correctly?Thank you very much!
bojie zhang
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Old   June 20, 2010, 19:02
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Sorry, I have not responded to you in a while. Did you have any luck with this problem?

There is an example setup for sediment scour that comes with the standard distribution of FLOW-3D. It has the typical settings for the scour model that may help you.

The scour model has gone through a major rewrite between version 9.3 and 9.4. Which one are you using?
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Old   June 21, 2010, 02:44
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Armen A. Ghirghidov
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Dear bojiezhang.
I spent 4 or 5 weeks for all of that parameters. Unfortunately I know that SS model works good with coarse sand (1-2mm). Fine sand is a problem (<0.25mm). Anyway it works. I choosed parameters for the laboratory experiment.

Regards.
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Old   July 1, 2010, 21:19
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Quote:
Originally Posted by MuxaB View Post
Sorry, I have not responded to you in a while. Did you have any luck with this problem?

There is an example setup for sediment scour that comes with the standard distribution of FLOW-3D. It has the typical settings for the scour model that may help you.

The scour model has gone through a major rewrite between version 9.3 and 9.4. Which one are you using?
Thank you for your reply.Now I am using 9.3.2.For some cases,the sediment soure by water velocity can work, but I really can not solve sediment soure by wave, it a big problem, because it not only need a lot of time to caculate, but I cannot see any soure.Hope you can help me! Thank you!
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Old   July 1, 2010, 21:22
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Quote:
Originally Posted by Ghirghidov View Post
Dear bojiezhang.
I spent 4 or 5 weeks for all of that parameters. Unfortunately I know that SS model works good with coarse sand (1-2mm). Fine sand is a problem (<0.25mm). Anyway it works. I choosed parameters for the laboratory experiment.

Regards.
Hello Ghirghidov:
I want to know if you use 9.3 or 9.4,and your sediment soure is caused by water velocity or by wave?
Thank you!
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Old   July 2, 2010, 04:01
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Armen A. Ghirghidov
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Dear bojiezhang.

I am using 9.3.1 and scour is caused by water velocity but I think that the SS mechanism doesn't depend on boundary conditions. just read the Theory. BTW the typical SS model's parameters are not usable in all the cases.Regards.
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Old   July 8, 2010, 22:00
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Quote:
Originally Posted by Ghirghidov View Post
Dear bojiezhang.

I am using 9.3.1 and scour is caused by water velocity but I think that the SS mechanism doesn't depend on boundary conditions. just read the Theory. BTW the typical SS model's parameters are not usable in all the cases.Regards.
Thank you very much! Can you send some prepins to me? I just want to see the soure phenomenon! Thank you again!
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Old   July 9, 2010, 04:44
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Dear bojiezhang.

Just have it. :-)

Title This is a sample input file $xput remark='units are ...', twfin=500., itb=1, gz=-9.81, ifvisc=1, ifvis=4, ipdis=1, idpth=1, apltdt=0.1, pltdt=25., delt=0.000001, ifpk=3, ifrho=1, $end $limits $end $props rhof=1000., rhofs=917., thexf1=0.00018, cv1=4182., cvs1=2100., pofl1=0., thc1=0.597, thcs1=2.215, clht1=3.35e+05, ts1=273., tl1=273., tniyam=-1., tsdrg=1., mu1=0.001, muc00=0., muc0=1., muc1=0., muc2=0., muc3=0., mutmp1=0., mutmp2=0., mutmp3=1., muthk=0., muthn0=0., muthn1=0., cangle=90., sigma=0.073, csigma=0., rf2=2.87e+06, tmelt=0., teut=0., ceut=0., cexf1=0., cstar=0., dratio=0., pcoef=0., fluid1='Water at 20 C', units='SI', $end $scalar scrang=35., scrcrt=0.055, scrdia=0.001, scrfco=.15, scrfcr=0.35, scrrho=2605., iscour1=1, scralp=0.1, scrdrg=1., $end $bcdata wl=5, wr=5, wb=2, flhtlt(1)=0.40, flhtrt(1)=0.3989, $end $mesh nxcelt=600, px(2)=2.998, nycelt=15, nzcelt=44, pz(2)=0.505, px(1)=0.002, py(1)=0.02, py(2)=0.17, pz(1)=0.285, $end $obs avrck=-3.1, nobs=1, rough(1)=0.0002, iob(1)=1, igen(1)=3, fstl(1)='lotok.stl', magn(1)=0.001, trnz(1)=0.265, $end $fl nfls=9, fioh(1)=1, fioh(2)=1, fioh(3)=1, fxl(2)=1.12, fxh(2)=1.125, fzh(1)=.3989, fzh(2)=.29567, fmagn(1)=1.0, fmagn(2)=1.0, fmagnx(1)=1.0, fmagnx(2)=1.0, fmagny(1)=1.0, fmagny(2)=1.0, fmagnz(1)=1.0, fmagnz(2)=1.0, frotx(1)=0.0, frotx(2)=0.0, froty(1)=0.0, froty(2)=0.0, frotz(1)=0.0, frotz(2)=0.0, ftrnx(1)=0.0, ftrnx(2)=0.0, ftrny(1)=0.0, ftrny(2)=0.0, ftrnz(1)=0.0, ftrnz(2)=0.0, fxl(3)=1.25, fxh(3)=1.3, fzh(3)=.30605, fmagn(3)=1.0, fmagnx(3)=1.0, fmagny(3)=1.0, fmagnz(3)=1.0, frotx(3)=0.0, froty(3)=0.0, frotz(3)=0.0, ftrnx(3)=0.0, ftrny(3)=0.0, ftrnz(3)=0.0, scr2reg(3)=991.9745, fioh(4)=1, fxl(4)=1.3, fxh(4)=1.35, fzh(4)=.315565, fmagn(4)=1.0, fmagnx(4)=1.0, fmagny(4)=1.0, fmagnz(4)=1.0, frotx(4)=0.0, froty(4)=0.0, frotz(4)=0.0, ftrnx(4)=0.0, ftrny(4)=0.0, ftrnz(4)=0.0, fioh(5)=1, fxl(5)=1.35, fxh(5)=1.40, fzh(5)=.327085, fmagn(5)=1.0, fmagnx(5)=1.0, fmagny(5)=1.0, fmagnz(5)=1.0, frotx(5)=0.0, froty(5)=0.0, frotz(5)=0.0, ftrnx(5)=0.0, ftrny(5)=0.0, ftrnz(5)=0.0, scr2reg(2)=991.9745, scr2reg(4)=991.9745, scr2reg(5)=991.9745, fioh(6)=1, fioh(7)=1, fxl(6)=1.40, fxl(7)=1.45, fxh(6)=1.45, fxh(7)=1.5, fzh(6)=.3314, fzh(7)=.33213, fmagn(6)=1.0, fmagn(7)=1.0, fmagnx(6)=1.0, fmagnx(7)=1.0, fmagny(6)=1.0, fmagny(7)=1.0, fmagnz(6)=1.0, fmagnz(7)=1.0, frotx(6)=0.0, frotx(7)=0.0, froty(6)=0.0, froty(7)=0.0, frotz(6)=0.0, frotz(7)=0.0, ftrnx(6)=0.0, ftrnx(7)=0.0, ftrny(6)=0.0, ftrny(7)=0.0, ftrnz(6)=0.0, ftrnz(7)=0.0, scr2reg(6)=991.9745, scr2reg(7)=991.9745, fioh(8)=1, scr2reg(8)=991.9745, fioh(9)=1, fioh(10)=1, fioh(11)=1, fioh(12)=1, fioh(13)=1, fioh(14)=1, fioh(15)=1, fioh(16)=1, fioh(17)=1, scr2reg(9)=991.9745, scr2reg(10)=991.9745, scr2reg(11)=991.9745, scr2reg(12)=991.9745, scr2reg(13)=991.9745, scr2reg(14)=991.9745, scr2reg(15)=991.9745, scr2reg(16)=991.9745, scr2reg(17)=991.9745, fioh(18)=1, scr2reg(18)=991.9745, ui=0.13, fxl(8)=1.5, fxl(9)=1.7, fxh(8)=1.7, fxh(9)=1.9, fzh(8)=0.33, fzh(9)=0.28, fmagn(8)=1.0, fmagn(9)=1.0, fmagnx(8)=1.0, fmagnx(9)=1.0, fmagny(8)=1.0, fmagny(9)=1.0, fmagnz(8)=1.0, fmagnz(9)=1.0, frotx(8)=0.0, frotx(9)=0.0, froty(8)=0.0, froty(9)=0.0, frotz(8)=0.0, frotz(9)=0.0, ftrnx(8)=0.0, ftrnx(9)=0.0, ftrny(8)=0.0, ftrny(9)=0.0, ftrnz(8)=0.0, ftrnz(9)=0.0, $end $bf $end $temp $end $motn $end $grafic anmtyp(1)='f', anmtyp(2)='p', anmtyp(3)='vel', anmtyp(4)='dpth', anmtyp(5)='scour1', $end &HEADER PROJECT='Experiment_VMDon_lotok_tests_coarse08-12', / $parts $end Documentation: general comments, background, expectations, etc.
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Old   July 9, 2010, 06:38
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Quote:
Originally Posted by Ghirghidov View Post
Dear bojiezhang.

Just have it. :-)

Title This is a sample input file $xput remark='units are ...', twfin=500., itb=1, gz=-9.81, ifvisc=1, ifvis=4, ipdis=1, idpth=1, apltdt=0.1, pltdt=25., delt=0.000001, ifpk=3, ifrho=1, $end $limits $end $props rhof=1000., rhofs=917., thexf1=0.00018, cv1=4182., cvs1=2100., pofl1=0., thc1=0.597, thcs1=2.215, clht1=3.35e+05, ts1=273., tl1=273., tniyam=-1., tsdrg=1., mu1=0.001, muc00=0., muc0=1., muc1=0., muc2=0., muc3=0., mutmp1=0., mutmp2=0., mutmp3=1., muthk=0., muthn0=0., muthn1=0., cangle=90., sigma=0.073, csigma=0., rf2=2.87e+06, tmelt=0., teut=0., ceut=0., cexf1=0., cstar=0., dratio=0., pcoef=0., fluid1='Water at 20 C', units='SI', $end $scalar scrang=35., scrcrt=0.055, scrdia=0.001, scrfco=.15, scrfcr=0.35, scrrho=2605., iscour1=1, scralp=0.1, scrdrg=1., $end $bcdata wl=5, wr=5, wb=2, flhtlt(1)=0.40, flhtrt(1)=0.3989, $end $mesh nxcelt=600, px(2)=2.998, nycelt=15, nzcelt=44, pz(2)=0.505, px(1)=0.002, py(1)=0.02, py(2)=0.17, pz(1)=0.285, $end $obs avrck=-3.1, nobs=1, rough(1)=0.0002, iob(1)=1, igen(1)=3, fstl(1)='lotok.stl', magn(1)=0.001, trnz(1)=0.265, $end $fl nfls=9, fioh(1)=1, fioh(2)=1, fioh(3)=1, fxl(2)=1.12, fxh(2)=1.125, fzh(1)=.3989, fzh(2)=.29567, fmagn(1)=1.0, fmagn(2)=1.0, fmagnx(1)=1.0, fmagnx(2)=1.0, fmagny(1)=1.0, fmagny(2)=1.0, fmagnz(1)=1.0, fmagnz(2)=1.0, frotx(1)=0.0, frotx(2)=0.0, froty(1)=0.0, froty(2)=0.0, frotz(1)=0.0, frotz(2)=0.0, ftrnx(1)=0.0, ftrnx(2)=0.0, ftrny(1)=0.0, ftrny(2)=0.0, ftrnz(1)=0.0, ftrnz(2)=0.0, fxl(3)=1.25, fxh(3)=1.3, fzh(3)=.30605, fmagn(3)=1.0, fmagnx(3)=1.0, fmagny(3)=1.0, fmagnz(3)=1.0, frotx(3)=0.0, froty(3)=0.0, frotz(3)=0.0, ftrnx(3)=0.0, ftrny(3)=0.0, ftrnz(3)=0.0, scr2reg(3)=991.9745, fioh(4)=1, fxl(4)=1.3, fxh(4)=1.35, fzh(4)=.315565, fmagn(4)=1.0, fmagnx(4)=1.0, fmagny(4)=1.0, fmagnz(4)=1.0, frotx(4)=0.0, froty(4)=0.0, frotz(4)=0.0, ftrnx(4)=0.0, ftrny(4)=0.0, ftrnz(4)=0.0, fioh(5)=1, fxl(5)=1.35, fxh(5)=1.40, fzh(5)=.327085, fmagn(5)=1.0, fmagnx(5)=1.0, fmagny(5)=1.0, fmagnz(5)=1.0, frotx(5)=0.0, froty(5)=0.0, frotz(5)=0.0, ftrnx(5)=0.0, ftrny(5)=0.0, ftrnz(5)=0.0, scr2reg(2)=991.9745, scr2reg(4)=991.9745, scr2reg(5)=991.9745, fioh(6)=1, fioh(7)=1, fxl(6)=1.40, fxl(7)=1.45, fxh(6)=1.45, fxh(7)=1.5, fzh(6)=.3314, fzh(7)=.33213, fmagn(6)=1.0, fmagn(7)=1.0, fmagnx(6)=1.0, fmagnx(7)=1.0, fmagny(6)=1.0, fmagny(7)=1.0, fmagnz(6)=1.0, fmagnz(7)=1.0, frotx(6)=0.0, frotx(7)=0.0, froty(6)=0.0, froty(7)=0.0, frotz(6)=0.0, frotz(7)=0.0, ftrnx(6)=0.0, ftrnx(7)=0.0, ftrny(6)=0.0, ftrny(7)=0.0, ftrnz(6)=0.0, ftrnz(7)=0.0, scr2reg(6)=991.9745, scr2reg(7)=991.9745, fioh(8)=1, scr2reg(8)=991.9745, fioh(9)=1, fioh(10)=1, fioh(11)=1, fioh(12)=1, fioh(13)=1, fioh(14)=1, fioh(15)=1, fioh(16)=1, fioh(17)=1, scr2reg(9)=991.9745, scr2reg(10)=991.9745, scr2reg(11)=991.9745, scr2reg(12)=991.9745, scr2reg(13)=991.9745, scr2reg(14)=991.9745, scr2reg(15)=991.9745, scr2reg(16)=991.9745, scr2reg(17)=991.9745, fioh(18)=1, scr2reg(18)=991.9745, ui=0.13, fxl(8)=1.5, fxl(9)=1.7, fxh(8)=1.7, fxh(9)=1.9, fzh(8)=0.33, fzh(9)=0.28, fmagn(8)=1.0, fmagn(9)=1.0, fmagnx(8)=1.0, fmagnx(9)=1.0, fmagny(8)=1.0, fmagny(9)=1.0, fmagnz(8)=1.0, fmagnz(9)=1.0, frotx(8)=0.0, frotx(9)=0.0, froty(8)=0.0, froty(9)=0.0, frotz(8)=0.0, frotz(9)=0.0, ftrnx(8)=0.0, ftrnx(9)=0.0, ftrny(8)=0.0, ftrny(9)=0.0, ftrnz(8)=0.0, ftrnz(9)=0.0, $end $bf $end $temp $end $motn $end $grafic anmtyp(1)='f', anmtyp(2)='p', anmtyp(3)='vel', anmtyp(4)='dpth', anmtyp(5)='scour1', $end &HEADER PROJECT='Experiment_VMDon_lotok_tests_coarse08-12', / $parts $end Documentation: general comments, background, expectations, etc.
Dear Ghirghidov:
Thank you very much! I will try it soon! My email is 2006woxingzhang@sina.com ,I want to get in touch with you further! If convinient, please send me component for the prepin together!
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Old   July 9, 2010, 06:42
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Armen A. Ghirghidov
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Dear bojiezhang.

You may not be fast. I will be at vacation during 3 weeks. :-)

Regards.
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Old   August 5, 2010, 08:03
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Quote:
Originally Posted by Ghirghidov View Post
Dear bojiezhang.

You may not be fast. I will be at vacation during 3 weeks. :-)

Regards.
Dear Ghirghidov:
I have used the same sediment parameters and the same intial condition as you, but the sediment was scoured at the begining, I don't know why?I hope you can send me more prepins,my email is 2006woxingzhang@sina.com, If possible, can you tell me how you set the parameters? Thank you very much!
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2010-8-5
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Old   August 5, 2010, 08:38
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I sent you my parameters so I have no additional things. I can send you parameters for fine sand (prepin also) but I'm affraid you will not get anything new from there.

Regards.
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Old   August 21, 2010, 15:48
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Dear bojiezhang.

Just have it. :-)

Title This is a sample input file $xput remark='units are ...', twfin=500., itb=1, gz=-9.81, ifvisc=1, ifvis=4, ipdis=1, idpth=1, apltdt=0.1, pltdt=25., delt=0.000001, ifpk=3, ifrho=1, $end $limits $end $props rhof=1000., rhofs=917., thexf1=0.00018, cv1=4182., cvs1=2100., pofl1=0., thc1=0.597, thcs1=2.215, clht1=3.35e+05, ts1=273., tl1=273., tniyam=-1., tsdrg=1., mu1=0.001, muc00=0., muc0=1., muc1=0., muc2=0., muc3=0., mutmp1=0., mutmp2=0., mutmp3=1., muthk=0., muthn0=0., muthn1=0., cangle=90., sigma=0.073, csigma=0., rf2=2.87e+06, tmelt=0., teut=0., ceut=0., cexf1=0., cstar=0., dratio=0., pcoef=0., fluid1='Water at 20 C', units='SI', $end $scalar scrang=35., scrcrt=0.055, scrdia=0.001, scrfco=.15, scrfcr=0.35, scrrho=2605., iscour1=1, scralp=0.1, scrdrg=1., $end $bcdata wl=5, wr=5, wb=2, flhtlt(1)=0.40, flhtrt(1)=0.3989, $end $mesh nxcelt=600, px(2)=2.998, nycelt=15, nzcelt=44, pz(2)=0.505, px(1)=0.002, py(1)=0.02, py(2)=0.17, pz(1)=0.285, $end $obs avrck=-3.1, nobs=1, rough(1)=0.0002, iob(1)=1, igen(1)=3, fstl(1)='lotok.stl', magn(1)=0.001, trnz(1)=0.265, $end $fl nfls=9, fioh(1)=1, fioh(2)=1, fioh(3)=1, fxl(2)=1.12, fxh(2)=1.125, fzh(1)=.3989, fzh(2)=.29567, fmagn(1)=1.0, fmagn(2)=1.0, fmagnx(1)=1.0, fmagnx(2)=1.0, fmagny(1)=1.0, fmagny(2)=1.0, fmagnz(1)=1.0, fmagnz(2)=1.0, frotx(1)=0.0, frotx(2)=0.0, froty(1)=0.0, froty(2)=0.0, frotz(1)=0.0, frotz(2)=0.0, ftrnx(1)=0.0, ftrnx(2)=0.0, ftrny(1)=0.0, ftrny(2)=0.0, ftrnz(1)=0.0, ftrnz(2)=0.0, fxl(3)=1.25, fxh(3)=1.3, fzh(3)=.30605, fmagn(3)=1.0, fmagnx(3)=1.0, fmagny(3)=1.0, fmagnz(3)=1.0, frotx(3)=0.0, froty(3)=0.0, frotz(3)=0.0, ftrnx(3)=0.0, ftrny(3)=0.0, ftrnz(3)=0.0, scr2reg(3)=991.9745, fioh(4)=1, fxl(4)=1.3, fxh(4)=1.35, fzh(4)=.315565, fmagn(4)=1.0, fmagnx(4)=1.0, fmagny(4)=1.0, fmagnz(4)=1.0, frotx(4)=0.0, froty(4)=0.0, frotz(4)=0.0, ftrnx(4)=0.0, ftrny(4)=0.0, ftrnz(4)=0.0, fioh(5)=1, fxl(5)=1.35, fxh(5)=1.40, fzh(5)=.327085, fmagn(5)=1.0, fmagnx(5)=1.0, fmagny(5)=1.0, fmagnz(5)=1.0, frotx(5)=0.0, froty(5)=0.0, frotz(5)=0.0, ftrnx(5)=0.0, ftrny(5)=0.0, ftrnz(5)=0.0, scr2reg(2)=991.9745, scr2reg(4)=991.9745, scr2reg(5)=991.9745, fioh(6)=1, fioh(7)=1, fxl(6)=1.40, fxl(7)=1.45, fxh(6)=1.45, fxh(7)=1.5, fzh(6)=.3314, fzh(7)=.33213, fmagn(6)=1.0, fmagn(7)=1.0, fmagnx(6)=1.0, fmagnx(7)=1.0, fmagny(6)=1.0, fmagny(7)=1.0, fmagnz(6)=1.0, fmagnz(7)=1.0, frotx(6)=0.0, frotx(7)=0.0, froty(6)=0.0, froty(7)=0.0, frotz(6)=0.0, frotz(7)=0.0, ftrnx(6)=0.0, ftrnx(7)=0.0, ftrny(6)=0.0, ftrny(7)=0.0, ftrnz(6)=0.0, ftrnz(7)=0.0, scr2reg(6)=991.9745, scr2reg(7)=991.9745, fioh(8)=1, scr2reg(8)=991.9745, fioh(9)=1, fioh(10)=1, fioh(11)=1, fioh(12)=1, fioh(13)=1, fioh(14)=1, fioh(15)=1, fioh(16)=1, fioh(17)=1, scr2reg(9)=991.9745, scr2reg(10)=991.9745, scr2reg(11)=991.9745, scr2reg(12)=991.9745, scr2reg(13)=991.9745, scr2reg(14)=991.9745, scr2reg(15)=991.9745, scr2reg(16)=991.9745, scr2reg(17)=991.9745, fioh(18)=1, scr2reg(18)=991.9745, ui=0.13, fxl(8)=1.5, fxl(9)=1.7, fxh(8)=1.7, fxh(9)=1.9, fzh(8)=0.33, fzh(9)=0.28, fmagn(8)=1.0, fmagn(9)=1.0, fmagnx(8)=1.0, fmagnx(9)=1.0, fmagny(8)=1.0, fmagny(9)=1.0, fmagnz(8)=1.0, fmagnz(9)=1.0, frotx(8)=0.0, frotx(9)=0.0, froty(8)=0.0, froty(9)=0.0, frotz(8)=0.0, frotz(9)=0.0, ftrnx(8)=0.0, ftrnx(9)=0.0, ftrny(8)=0.0, ftrny(9)=0.0, ftrnz(8)=0.0, ftrnz(9)=0.0, $end $bf $end $temp $end $motn $end $grafic anmtyp(1)='f', anmtyp(2)='p', anmtyp(3)='vel', anmtyp(4)='dpth', anmtyp(5)='scour1', $end &HEADER PROJECT='Experiment_VMDon_lotok_tests_coarse08-12', / $parts $end Documentation: general comments, background, expectations, etc.
Hi Dear
i want use from this, but when add it in flow 3d. then comes this error:
("lotock.stl" cannot be opened)

help me
thanks.
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Old   August 23, 2010, 02:48
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Armen A. Ghirghidov
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Dear river80,

lotok.stl is just solid object. You could delete it or draw it by yourself. boundary conditions will not be changed.

Regards.
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Old   August 27, 2010, 10:46
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hos
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Hi Dear Ghirghidov,
can u send me your "lotok.stl" file
thanks a lot.
i have best wish for u.
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Old   August 30, 2010, 10:14
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Armen A. Ghirghidov
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Dear river80,

Sure I can send it you. please e-mail me to ardgir@mail.ru.

Regards.
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Old   November 26, 2010, 15:28
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mohammad
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Quote:
Originally Posted by Ghirghidov View Post
Dear river80,

Sure I can send it you. please e-mail me to ardgir@mail.ru.

Regards.
hi can u please say how i should add it in flow 3d?
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