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Forum: Main CFD Forum

November 2, 2015, 10:46

Replies: 28

How to check size scale effect in a butterfly valve

Views: 2,055

Posted By Sarang V

1.That looks ok. What turb model and wall...

1.That looks ok. What turb model and wall treatment options are you using ? Also, what is the RE#
2. I typically look at the profile of the mass flow rate and not at a single number.

I would...

Forum: Main CFD Forum

October 30, 2015, 15:38

Replies: 28

How to check size scale effect in a butterfly valve

Views: 2,055

Posted By Sarang V

Ok, so your upstream section seems long enough....

Ok, so your upstream section seems long enough. Let us try the following

1. As a sanity check make sure that the outflow mass flow rate + Inflow mass flow rate is reaching a steady state.

2....

Forum: Main CFD Forum

October 30, 2015, 15:17

Replies: 28

How to check size scale effect in a butterfly valve

Views: 2,055

Posted By Sarang V

1. I am assuming you are using a steady state...

1. I am assuming you are using a steady state solver. Did you check if the runs converged ?
2. Can you post a plot of your solution domain ? (Looking into the pipe and Looking from side)
3. How are...

Forum: Main CFD Forum

October 30, 2015, 14:58

Replies: 28

How to check size scale effect in a butterfly valve

Views: 2,055

Posted By Sarang V

If your boundary conditions have been obtained...

If your boundary conditions have been obtained from experiments and the locations of these boundaries are far enough from the location of your valve then you will not have issues using the same...

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