How Do You Calculate Nozzle Pressure in a Rotating Spray Dry Atomizer?

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The discussion centers on calculating the pressure at spray nozzles in a spray dry atomizer setup with a rotating shaft at 6000 RPM. The setup includes a bowl filled with water at a rate of 5 gallons per minute, with nozzles positioned at the end of 12-inch arms. A no-flow pressure of approximately 12,000 G at the nozzles has been calculated, but the pressure during liquid flow remains uncertain. The conversation references Bernoulli's principle as a potential method for determining the flowing pressure. Accurate calculations are essential for optimizing the atomization process.
Bill B
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This is a spray dry atomizer problem. I have a shaft that rotates at 6000 ropm. On top of the shaft sits a bowl with two arms that are 180 degrees apart. At the end of each arm is a spray nozzle with a 5/32 inch hole. The length of each arm with the nozzle attached is 12 inches from the center line of the shaft.

If I fill the bowl with water at the rate of 5 gallons a minute with the shaft spinning, what is the pressure at the nozzles?

I calculated a no-flow pressure of about 12,000 G at the nozzles but I don't know how to calculate the pressure with a flowing liquid

Bill B
 
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Typical engineering adage: "Let's Employ Bernoulli". :biggrin:
 

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