Flow through Orifice Question
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Posted by: Ron Woodlands ®

03/23/2006, 14:58:34
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I'm in the process of designing a fluid flow regulator based on the long proven concept of flow through an orifice. However, I want to be able to adjust the flow rate from a remote location. I'm thinking of using multiple orifices in the regulator and adjusting it by selectively sliding a sleeve over them to open or close each one. Since the standard equation for flow through an orifice includes a K factor based on the shape of the orifice, I'm wondering if the inclusion of multiple orifices placed in parallel between the high pressure and low pressure flow regime will have a dramatic effect on this K factor. If anyone can help, it would be greatly appreciated.







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Re: Flow through Orifice Smile
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Posted by: mobrey ®

07/21/2006, 16:39:02
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Hi, I think one orifice is enough to regulate the flow with your final control element.







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Re: Flow through Orifice
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Posted by: luvz2flyalot ®

06/05/2006, 15:38:42
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You have not given enough info to solve this. Normally a flow regulator uses a pressure regulator ahead of a fixed orifice. If this doesn't give the turn down you want you could use a needle valve. How remote is the adjustment?

Regarding K factor, the flow characteristics of your parallel orifices could have a significant impact on it, depending on orifice spacing, direction of approach, upstream-to-orifice diameter ratio, etc. A test should determine this easily.








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Re: Flow through Orifice
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Posted by: zekeman ®

03/24/2006, 10:21:33
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I don't see a problem with what you are trying to do. Why don't you do this empirically to test your thesis? Then you will have your answer.







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