Steam venting noise, pressure value
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Regarding steam venting noise, it can be divided into subsonic jetting and choked jetting based on the velocity of the airflow at the nozzle. For subsonic jetting noise, the stagnation pressure at the nozzle must be lower than the critical pressure. I believe that the stagnation pressure referred to here is absolute pressure, but some colleagues think it is gauge pressure. I would appreciate it if experts could provide guidance and answers to this question. Thank you!
I don’t understand this question; I think it should be gauge pressure. Absolute pressure doesn’t seem to convey anything in this context, and it is gauge pressure that directly affects the logarithmic values