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 |
please help me: open channel modeling problem
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. |
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? |
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 |
Fluent- multiphase help
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.... |
Tutorial
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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 |
Tutorial
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can I use periodic flow for simulate open channel flow with Fluent by using VOF model?
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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. |
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:
https://www.cfd-online.com/Forums/fl...tml#post639515 Good luck! |
Quote:
tamarmeesam@gmail.com |
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