boundary condition

payam.h · October 24, 2017, 05:42

Hi
I have some problems in flow 3D.
first ,I am simulating a 2.5D ogee spillway . The number of cells of mesh is approximately 1400000. Run time is 3 days for 30 second. That's too much time for this model. I don't have sediment and just consider hydraulic of flow.
second, I use this boundary condition for model :
Attachment 59158
Untitled.png
I think may be boundary condition in Xmax is wrong.
I choose outflow for Xmax.

Thanks in advance for your help

Farzam · December 2, 2018, 17:14

Hi Payam,

This video might be useful for you.

https://www.youtube.com/watch?v=v2lf...99BC48&index=5

thunde47 · December 13, 2018, 12:48

What hardware are you using? The number of cores?

Do you have a turbulence model activated? Which one?

October 24, 2017, 05:42	boundary condition	#1
payam.h New Member Join Date: Oct 2017 Posts: 4 Rep Power: 9	Hi I have some problems in flow 3D. first ,I am simulating a 2.5D ogee spillway . The number of cells of mesh is approximately 1400000. Run time is 3 days for 30 second. That's too much time for this model. I don't have sediment and just consider hydraulic of flow. second, I use this boundary condition for model : Attachment 59158 Untitled.png I think may be boundary condition in Xmax is wrong. I choose outflow for Xmax. Thanks in advance for your help

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
sliding mesh problem in CFX	Saima	CFX	46	September 11, 2021 08:38
Centrifugal fan	j0hnny	CFX	13	October 1, 2019 14:55
Accessing multiple boundary patches from a custom boundary condition file	ripudaman	OpenFOAM Programming & Development	0	October 22, 2014 19:34
Radiation interface	hinca	CFX	15	January 26, 2014 18:11
An error has occurred in cfx5solve:	volo87	CFX	5	June 14, 2013 18:44

December 2, 2018, 17:14		#2
Farzam New Member Join Date: Dec 2017 Posts: 20 Rep Power: 9	Hi Payam, This video might be useful for you. https://www.youtube.com/watch?v=v2lf...99BC48&index=5

December 13, 2018, 12:48		#3
thunde47 Senior Member thunde47 Join Date: Dec 2015 Location: India, USA Posts: 133 Blog Entries: 1 Rep Power: 11	What hardware are you using? The number of cores? Do you have a turbulence model activated? Which one?