flow noise

flow noise

[′flō ‚nȯiz]
(acoustics)
Pressure variations associated with a turbulent flow field that do not propagate away from the turbulent source but are sensed as sound by a receiver in direct contact or close to the turbulent flow. Also known as near-field noise.
More generally, any noise generated by turbulent fluid flow.
References in periodicals archive ?
The Honeywell valves also minimise flow noise and protect installations from damage caused by excessive pressure.
It was further noted that a classical description of fan noise distinguishes between two primary noise components, namely vortex flow noise and rotational flow noise.
Vibracon LVL-B Series vibration limit switches are not sensitive to material buildup, external vibration, and flow noise, and have no mechanical moving parts.
According to the company, Vibracon LVL-B Series sensors are insensitive to material build-up, external vibration and flow noise, and have no mechanical moving parts for more reliable performance.
The Vibracon LVL-B Series vibration limit switches are insensitive to material build-up, external vibration and flow noise, and have no mechanical moving parts for reliable, maintenance-free level sensing.
This flow noise proved useful as an additional verification that all sensors were working satisfactorily during the test and did not produce locatable events.
The 300-kHz center frequency of the sensor-preamplifier combination was designed to be relatively insensitive to the gas flow noise.
Such noise sources may include "quiet" valves designed to reduce audible flow noise, pressure regulators, and other significant flow restrictions in the pipeline.
Flow noise increases as the seal dives; augmenting the time resolution of this segment reveals each flipper's swimming strokes.
The light-blue line of cumulative hits, corresponds to flow noise at the end of the cool down, and this was confirmed by the operations department of the plant.
By maintaining a constant ideal pressure, it also reduces water consumption and minimises flow noise in the system.
5 sec can be achieved - technical building systems must be designed so that their operating and flow noises do not enter the rehearsal room, The rehearsal stage and the practice rooms.