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boundary conditions in FLUENT VOF for open channel flow |
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December 3, 2014, 05:10
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#21 |
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Senior Member
Javi
Join Date: Jan 2013
Posts: 276
Rep Power: 16  |
Hi all,
I found this video and I think it could help to get a better understanding of how to make VOF setup  Guida Setting VOF Fluent |
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December 8, 2014, 17:00
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please help me: open channel modeling problem
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#22 |
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New Member
sajjad
Join Date: Dec 2014
Posts: 1
Rep Power: 0 |
Hi
Dear friends. I'm trying model a simple rectangular channel steady-state flow on Fluent by VOF: open channel condition. Something cause a problem and affect the results. the geometry of my channel is 30x30cm by 0.002 slope which the channel length is 10 m ; and the flow depth is 10cm. According to the http://0up.ir/up10/guest/3.png and http://0up.ir/up10/guest/out.png boundary conditions considered as pressure- inlet &outlet and the top of my channel considered as pressure inlet according to the Fluent Help! I've tried many B.C. to all the boundaries. but the velocity of air at the inlet considered about 90m/s!!!!! which it increases along the channel to end and reaches to 690m/s!!!!!!!!!!! how can it possible???? and i cant fix it also, density reports shows the water (Secondary phase) is under the air (First phase), which it is true. but the main problem is the air velocity in Domain. Pics.>>>>> http://0up.ir/up10/guest/1.png http://0up.ir/up10/guest/2.png http://0up.ir/up10/guest/t1.png Please help me to solve this problem. |
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December 11, 2014, 05:08
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#23 |
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Senior Member
Javi
Join Date: Jan 2013
Posts: 276
Rep Power: 16 |
Hi Javidcfd,
I would use pressure-inlet at inlet, pressure-outlet at outlet, wall for the floor and symmetry for the rest of surfaces. Taking a look at your mesh, I would try to refine it at the free surface region as well. Have you activated gravity option? Where is your reference pressure location? Have you marked and patched your region? |
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March 1, 2015, 09:35
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#24 |
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New Member
lana
Join Date: Mar 2015
Location: turky
Posts: 1
Rep Power: 0 |
hi javidcfd
i have a model close to your one, but mine is flat (without bed inclination) but i have some problems with it, how can i contact with you .. i really need your help |
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April 10, 2015, 02:07
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Fluent- multiphase help
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#25 |
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New Member
Sazeda Begam
Join Date: Mar 2015
Posts: 4
Rep Power: 11 |
I'm searching for "Heave and Pitch Simulation of Ship hull moving through head sea waves" tutorial. Please anyone send me the zip file, my mail id is sbsazeda@gmail.com
Thanks.... |
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May 6, 2015, 06:56
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Tutorial
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#26 |
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New Member
Diego Garcia Pardo
Join Date: Nov 2014
Posts: 3
Rep Power: 12 |
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January 11, 2016, 21:02
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#27 |
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New Member
Jakub
Join Date: Sep 2015
Posts: 20
Rep Power: 11 |
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January 22, 2016, 01:26
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#28 |
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New Member
Join Date: Aug 2015
Posts: 1
Rep Power: 0 |
Hi, can anyone share the "Heave and Pitch Simulation of Ship hull moving through head sea waves" tutorial to me please. Thank you!
sharmainepook@gmail.com |
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October 11, 2016, 12:35
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Tutorial
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#29 |
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New Member
Sebastián Barragán
Join Date: Apr 2016
Location: Bogotá, Colombia
Posts: 14
Rep Power: 10 |
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December 21, 2016, 13:49
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#30 |
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New Member
cesar
Join Date: Dec 2016
Posts: 4
Rep Power: 10 |
can I use periodic flow for simulate open channel flow with Fluent by using VOF model?
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February 25, 2017, 04:39
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#31 |
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Member
Masoud Ravan
Join Date: May 2016
Location: Tehran
Posts: 59
Rep Power: 10 |
Hi
I had the same problem (high velocity flow from outlet to domain!!!!), It is because of reference of pressure which you have to determine in "operation condition" menu. Don't forget to check specified density Good Lock everyone. |
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March 5, 2017, 14:15
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#32 |
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New Member
Luke Whelan
Join Date: Jan 2017
Posts: 9
Rep Power: 9 |
Hey if anyone is still having continuity convergence issues, I think I may have a solution. I posted a similar question a few weeks ago and updated it with the answer:
Acceptable residuals of continuity in open channel flow? Good luck! |
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May 4, 2020, 08:28
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#33 | |
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New Member
Join Date: May 2020
Posts: 10
Rep Power: 6 |
Quote:
tamarmeesam@gmail.com |
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May 28, 2024, 14:41
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#34 | |
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New Member
AA
Join Date: May 2024
Posts: 5
Rep Power: 2 |
Quote:
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