UHP water jetting and calculating kinetic energy

AI Thread Summary
The discussion centers on calculating the velocity and power of water streams exiting orifices under high pressure, specifically at 60 ksi through a 0.015" orifice. Participants request more detailed information and diagrams to provide accurate answers for two scenarios involving solenoid valves and the effects on stream velocity. The importance of smooth, laminar flow is emphasized, and the absence of a system relief is noted for simplification. A reference to a research paper indicates that a 1 mm orifice at 420 MPa achieves a velocity of 916 m/s, verified through advanced measurement techniques. The conversation also touches on the energy dispersion rate from the nozzle tip to the atmosphere and the potential impact of the water stream on human bodies.
Canagman
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If i compress water to 60 ksi, and push it through a 0.015" sharp orifice, then i have another orifice 2 feet before that sudden open to 0.015", what is the velocity of the stream from each orifice?
 
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You'll have to tell us more before anyone on PF can give you a proper answer .

Please post a more detailed description of the problem and a clear diagram .
 
I have drawn this in metric units.
Scenario # 1 (Solenoid valve 2 opens, pump is supplying noted pressure to water)
What is the velocity of the stream exiting attached nozzle? Power of stream?
Scenario # 2 (Solenoid valve 1 opens...Valve 2 stays open)
What is the velocity of each nozzle? Power of each stream?
And yes, smooth, laminar flow...note that i have not added a system relief just to simplify.

Thank you in advance
question.jpg
 
In addition, is there a specific energy dispersion rate from the nozzle tip to atmosphere?
 
Have you got a drawing of the orifice and nozzle ?
 
no i do not, however i did stumble upon a research paper has the calculation and 420 MPa, 1 mm orifice = 916 m/s this was verified thru CFD and measured using phase Doppler anemometry...that was thru a single orifice...i need look thru the rest of the formulae and work thru the impact of that water stream on a human body...

Regards
 

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