How to Calculate Flow Rate?

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au.umair Associate Join Date: Sep 2010 Posts: 37	How to Calculate Flow Rate? 12/19/2010 6:53 AM
	Dear members, If the internal diameter D of a pipe and the pressure P of water flowing through this pipe is given then how can we measure the flow rate of water flowing through this pipe?. I need a equation that show the relation between these three quantities?. __________________ au.umair
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lyn Guru Join Date: Oct 2008 Posts: 42355 Good Answers: 1693	#1 Re: How to calculate flow rate? 12/19/2010 7:42 AM
	Volumetric flow rate - Wikipedia, the free encyclopedia
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phoenix911 Guru Join Date: Aug 2007 Posts: 23647 Good Answers: 420	#2 Re: How to calculate flow rate? 12/19/2010 9:09 AM
	don't confuse pressure with volesity __________________ “ When people get what they want, they are often surprised when they get what they deserve " - James Wood
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Tornado Guru Join Date: May 2009 Location: Richland, WA, USA Posts: 21017 Good Answers: 795	#3 Re: How to Calculate Flow Rate? 12/19/2010 11:56 PM
	Please consider these equations: Hazen-Williams, Darcy-Weisbach, and Colebrook. You need a different set of three quantities; in particular the equivalent length of the pipe in question. __________________ In vino veritas; in cervisia carmen; in aqua E. coli.
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PWSlack Guru Join Date: Jan 2007 Location: In the bothy, 7 chains down the line from Dodman's Lane level crossing, in the nation formerly known as Great Britain. Kettle's on. Posts: 32175 Good Answers: 839	#4 Re: How to Calculate Flow Rate? 01/04/2011 11:01 AM
	Flowrate is not related to pressure. The pressure can be high and a shut valve can make the flowrate zero, for example. Flowrate through the pipe is related to pressure drop along the pipe by the Darcy-Weisbach generalised flow equation, which requires rather more than two parameters to calculate the flow. Unless the values of these other parameters are known, the quest for a calculated answer for the flowrate will prove fruitless. __________________ "Did you get my e-mail?" - "The biggest problem in communication is the illusion that it has taken place" - George Bernard Shaw, 1856
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lyn (1); phoenix911 (1); PWSlack (1); Tornado (1)

You might be interested in: Pipe Hangers and Pipe Supports, Gas Flow Meters, Flow Meters

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