Open Channel Flow in a Pipe

sebastianbn · October 11, 2016, 02:10

Hi!

I need some help setting up an open channel flow problem.
It consists in a sewer pipe, with very small slope, which should have water flowing up to the 85% of it's cross section.
I haven't been able to set this initial boundary condition so that there is water and air...
Any help would be very useful.

Thanks,

Sebastián

salmanayon · October 14, 2016, 12:00

Create velocity inlet and pressure outlet surface and boundary conditions, then activate open channel flow.

masoud.ravan · February 27, 2017, 04:12

Quote:

Originally Posted by salmanayon

Create velocity inlet and pressure outlet surface and boundary conditions, then activate open channel flow.

Hi, I want to simulate an open channel with fixed water level at inlet and outlet but I do not know how to fix the water level, I have used OPEN CHANNEL FLOW but after simulation results showed same water level at inlet and outlet...Do you know why?

mary.alih · March 6, 2017, 10:25

Hi, I want to do the same simulation. Have you found any solution?!
thanks

sebastianbn · March 22, 2017, 08:07

I've used pressure inlet and pressure outlet and it seems to work...
But I have the same problem mentioned above, it appears that after the simulation both inlet and outlet, even I set different elevations for each one, they end being the same.

sebastianbn · March 22, 2017, 08:14

Quote:

Originally Posted by salmanayon

Create velocity inlet and pressure outlet surface and boundary conditions, then activate open channel flow.

Hey! Thanks for answering back.
How do you use a velocity inlet with OPEN CHANNEL FLOW? When I try to use it like that it says that a velocity inlet can't be used with the OPEN CHANNEL FLOW...

My case is a 3D pipe

October 11, 2016, 02:10	Open Channel Flow in a Pipe	#1
sebastianbn New Member Sebastián Barragán Join Date: Apr 2016 Location: Bogotá, Colombia Posts: 14 Rep Power: 10	Hi! I need some help setting up an open channel flow problem. It consists in a sewer pipe, with very small slope, which should have water flowing up to the 85% of it's cross section. I haven't been able to set this initial boundary condition so that there is water and air... Any help would be very useful. Thanks, Sebastián

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October 14, 2016, 12:00		#2
salmanayon New Member Salman Sakib Join Date: Aug 2016 Posts: 8 Rep Power: 10	Create velocity inlet and pressure outlet surface and boundary conditions, then activate open channel flow.

March 6, 2017, 10:25		#4
mary.alih New Member Maryam Alih Join Date: Mar 2017 Posts: 3 Rep Power: 9	Hi, I want to do the same simulation. Have you found any solution?! thanks

March 22, 2017, 08:07		#5
sebastianbn New Member Sebastián Barragán Join Date: Apr 2016 Location: Bogotá, Colombia Posts: 14 Rep Power: 10	I've used pressure inlet and pressure outlet and it seems to work... But I have the same problem mentioned above, it appears that after the simulation both inlet and outlet, even I set different elevations for each one, they end being the same.