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Location:
Perth
Registered:
June 2002
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Re: Flow vs. Pressure
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Mon, 03 January 2005 14:39
 
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OK, I don't know if this will help at all, and it may be a little deep for what you are wanting to work out, but try anyway.
The units are a little funny but if you're good with maths you should be right.
Also I can't type the formula out so it looks right on the screen, or I would have done that!
1. Multiply the specific gravity of the fuel (which will change with temperature) by 12.
2. Divide into this figure the differential pressure across the injector in inches of water.
3. Multiply this figure by 64.34.
4. Square root this figure.
5. Multiply what you get by the cross-sectional area of the injector in square feet (1mm squared is equal to 1.076391 x 10 to the power negative 5 square feet).
6. The figure you now have is the volumetric flow through the injector in cubic feet per second! 
This formula of course doesn't take into consideration the viscosity of the fuel, velocity of approach to the injector or frictional losses, but these will make bugger all difference in the real world anyway!
Hope it helps!
Gabe
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| | Subject | Poster | Date |
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Flow vs. Pressure
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mrshin | Mon, 03 January 2005 11:27 |
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Re: Flow vs. Pressure
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Ra28Freak | Mon, 03 January 2005 12:57 |
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Re: Flow vs. Pressure
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gabe | Mon, 03 January 2005 14:39 |
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Re: Flow vs. Pressure
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gabe | Mon, 03 January 2005 15:04 |
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Re: Flow vs. Pressure
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MS-75 | Mon, 03 January 2005 20:19 |
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Re: Flow vs. Pressure
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Skip | Mon, 03 January 2005 23:55 |
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Re: Flow vs. Pressure
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shinybluesteel | Tue, 04 January 2005 00:15 |
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Re: Flow vs. Pressure
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Miss MR2 | Tue, 04 January 2005 00:41 |
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Re: Flow vs. Pressure
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mrshin | Tue, 04 January 2005 10:49 |
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Re: Flow vs. Pressure
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HighRolla | Tue, 04 January 2005 12:03 |
