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Old   November 30, 2011, 09:42
Default One way valve geometry GAMBIT
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Can anyone help me to design one way valve geometry in gambit? Actually I am currently studying an unsteady flow through a pipe (after water exits pump) and I want to see the effect of adding an one-way-valve (known also as check valve) into the pipe.
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Old   November 30, 2011, 09:46
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Do you have a sketch of your valve?
Already built within CAD maybe?
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Old   November 30, 2011, 09:49
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Actually not. I am very new in CFD analysis and I don't know so many things. Do I have to make a CAD first and then try to design geometry in Gambit?
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Old   November 30, 2011, 09:53
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not necessary.
Prior to CFD analysis, you need to built your geometry (cad package or gambit).
Once you know your design, I will help you
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Old   November 30, 2011, 09:54
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Ok max. I will provide you with my design as soon as I have it. Thank you!
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Old   December 5, 2011, 10:23
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Quote:
Originally Posted by -mAx- View Post
not necessary.
Prior to CFD analysis, you need to built your geometry (cad package or gambit).
Once you know your design, I will help you
Hi max I am lost. I found some check valves design in youtube (links below). I can use either of them to make a start. I am currently working on the flow of the water in pipe (after exits water pump). I have already designed and analyzed an unsteady flow in a 2-d pipe and now I want to attach one-way-valve geometry in this pipe to see the difference in the flow of the water ( i am interested in the change of flow rate over time). Hope that I am clear and you can help me.

http://www.youtube.com/watch?v=aOOdW...eature=related
http://www.youtube.com/watch?v=qi7rh...B06A3A816195D1
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Old   December 5, 2011, 11:34
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http://www.youtube.com/watch?v=ehDd4...eature=related

Something like this I think is the easiest way. Can I create that in 2-d?

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Old   December 5, 2011, 12:53
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Old   December 5, 2011, 13:01
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static ou moving mesh?
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Old   December 5, 2011, 13:04
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Quote:
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static ou moving mesh?
what is the difference? (sorry for the idiot questions)
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Old   December 5, 2011, 13:09
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The straight pipe that I had design is created by 4 vertices ((0,0,0), (8,0,0), (0,0.05,0), (8,0.05,0)). I connected those vertices and created 4 edges. The boundary conditions are (velocity inlet, wall, pressure outlet and axis). Analyze in fluent 6.3 an axissymetric unsteady flow. Now I want to attach one-way-valve in this pipe to see the difference. Do I have to design a different pipe or just attach the valve in the existing one?
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Old   December 5, 2011, 13:10
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the ball may rotate and it will open/close the valve.
Try first static mesh (one position (ball-angle))
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Old   December 5, 2011, 13:17
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Quote:
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the ball may rotate and it will open/close the valve.
Try first static mesh (one position (ball-angle))
Can this be done in 2-D?
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Old   December 5, 2011, 13:33
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yes but not in 2d-axisymmetric
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Old   December 5, 2011, 13:45
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Quote:
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yes but not in 2d-axisymmetric
How should I proceed? Shall I just put a ball in the pipe and change the boundary conditions? Or I have to create a very different geometry?
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Old   December 5, 2011, 13:53
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sketch first on paper, and post here
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Old   December 5, 2011, 14:22
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here is the sketch. I hope that is clear and I will be able to create one of these geometries.
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Old   December 6, 2011, 01:49
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In fact I expected a sketch with dimensions
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