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.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
The numerical and experiment results indicate that the vortex-structure interaction plays a very significant role in the flow noise radiation.
Often a box is oversized to reduce full flow noise and pressure drop, resulting in a damper size that has little authority for low flow rates.
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.
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.
It also discusses the use of unsupervised PR, as a multidimensional sorting technique aiming to identify and separate noise-related AE (EMI, friction, mechanical impacts, flow noise) from legitimate AE.