Steam jet -- noise level

[otaio]

When steam under pressure discharges from a vent pipe it creates noise.

Is anyone aware of a way of calculating the likely noise level given the diameter of the pipe and pressure of dicharge?

Bob B

 

[poetix99]

I have a vague recollection of a friend & colleague who did work on Navy subs (quiet!, quiet!, QUIET!!!) showing me a book on noise and noise reduction by one of the eponymous founders of BBN - Mr. Bolt, Mr. Beranek or Mr. Newman. The book was concerned with noise reduction, but addressed sound pressure and power levels and scaling relationships for similar phenomena.

Now, after starting this post I have briefly searched thru Goooooogle, and found two titles from the BBN guys, with these two links:
Noise & Vibration Control Engineering (etc)

http://www.opengroup.com/tabooks/047/0471617512.shtml

Handbook of Acoustical Measurements and Noise Control, 3rd ed.

http://asa.aip.org/books/handbook.html

You might find these to be useful. I suspect that it is a highly uncertain proposition to calculate noise from first principles, but much easier to scale noise for different flows, pipes size, etc from a "baseline" measurement.

 

[otaio]

poetix99

Thank you for the references. I shall dig out my copy of Noise and Vibration control and see what it says. Again thanks for this useful reminder.

Much appreciated.

Bob B

 

[TBP]

There are companies that manufacture mufflers for just such applications. You might try some of them for information.