Français
5. Computational noise prediction
Noise prediction remains a difficult problem, requiring considerable computing resources. It can only be done on an approximate basis. We will deal here only with the 2 main lines encountered on a pump:
the line at rotation speed N, of mechanical origin ;
the line at frequency n r N (scrolling of the impeller blades).
5.1 Line at frequency N
The Ultimate Scientific and Technical Reference
This article is included in
Hydraulic, aerodynamic and thermal machines
This offer includes:
Knowledge Base
Updated and enriched with articles validated by our scientific committees
Services
A set of exclusive tools to complement the resources
Practical Path
Operational and didactic, to guarantee the acquisition of transversal skills
Doc & Quiz
Interactive articles with quizzes, for constructive reading
Computational noise prediction
Noise generated by cavitation
Bibliography
Circuit calculation codes
Pressure fluctuations emitted by a pump (or valve) must be analyzed to determine the risk they represent for the circuit (stresses, vibration levels, natural frequencies, forces exerted on the structure).
As we have already seen
Standardization
All aspects of testing standards are covered in depth in the reference . We have extracted the most important passages:
Airborne noise measurement
The Ultimate Scientific and Technical Reference
