RichR
Premium Member
Registered: 17th Oct 01
Location: Waterhouses, Staffordshire
User status: Offline
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How do you convert flow rate (125 l/min) into pressure (bar) given the constants of a 38mm bore pipe; and 1025kg/m3 density of fluid.
I haven't done it in ages and can't remember!
[Edited on 23-07-2009 by LiVe LeE]
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Ellis
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Registered: 11th Sep 07
Location: Aberdeenshire
User status: Offline
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Reynolds number?
I can't remember either
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Ellis
Member
Registered: 11th Sep 07
Location: Aberdeenshire
User status: Offline
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Q = A x V for a start
Transpose for V...
Then I don't know yet
EDIT: If you do it, post it up as it's annoying me and I'm away out
[Edited on 23-07-2009 by Ellis]
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Bart
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Registered: 19th Aug 02
Location: Midsomer Norton, Bristol Avon
User status: Offline
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Reynolds number is re=Pud / n
P= fluid density,
U= average fluid velocity
d= pipe diammeter
n= absolute viscosity
And thats reading from my 3 year old college notes.. I will see if I have any similar questions.....
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Bart
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Registered: 19th Aug 02
Location: Midsomer Norton, Bristol Avon
User status: Offline
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Whats your entire question Lee? is it for college?
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RichR
Premium Member
Registered: 17th Oct 01
Location: Waterhouses, Staffordshire
User status: Offline
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no not for college/uni - I'm specifying a coolant water hose for a twin 315hp installation on a new boat.
The Sea water pump has a capacity of 125litre/min and the hose bore is 38mm. I need to work out wether the one I'm specifying has a high enough suction rating and won't collapase underload.
We've never had a problem but this particular customer wants all the calcs showing. My notes are back at home so I'll look tomorrow night
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