Matches in SemOpenAlex for { <https://semopenalex.org/work/W2415535229> ?p ?o ?g. }
Showing items 1 to 53 of
53
with 100 items per page.
- W2415535229 abstract "On some axial-flow fans, high-level Abnormal Tonal Noise components (abbreviated as 'ATM' in this paper) have been found which are perceived as a disharmonic screetching sound and can not be explained by the classical theory of fan noise. It was obeserved that: (i) ATN appears only in a limited interval of the fan's aerodynamic operating conditions; (ii) ATN consists of multiple tones, whose frequencies / can be derived from one main ATN frequency/i and the blade passing frequency BPF by f, = n-fg+m-BPF («=1,2,3,.. «=0,±1,±2,..); (iii) in a limited interval of air flow the main ATN frequency does not change with the aerodynamic fan operating condition; (iv) under certain conditions the main ATN frequency f0 alternates between two closely spaced frequencies. Modal analysis of the sound field in the duct and measurements of flow velocity using hotwire probes were performed. The experiments showed that ATN is generated by periodic vortex shedding from the stator vanes' trailing edges which is azimuthaly syncronized to an acoustic resonant mode of the duct. The vortex shedding is amplitude modulated by the blade passing frequency. The alternating of the main ATN frequency is caused by the swirl component of the flow leaving the fan. ATN completely dissapears when the periodic vortex shedding is impeded (by sharp stator vane trailing edges or by tripping the flow around the stator vanes), or the azimuthal synchronization is blocked (by increasing the chord length of selected stator vanes)." @default.
- W2415535229 created "2016-06-24" @default.
- W2415535229 creator A5080330202 @default.
- W2415535229 date "1998-06-02" @default.
- W2415535229 modified "2023-09-28" @default.
- W2415535229 title "Abnormal high-level tonal noise in axial-flow fans" @default.
- W2415535229 cites W1989160576 @default.
- W2415535229 cites W2046065442 @default.
- W2415535229 cites W2077839060 @default.
- W2415535229 doi "https://doi.org/10.2514/6.1998-2253" @default.
- W2415535229 hasPublicationYear "1998" @default.
- W2415535229 type Work @default.
- W2415535229 sameAs 2415535229 @default.
- W2415535229 citedByCount "4" @default.
- W2415535229 countsByYear W24155352292012 @default.
- W2415535229 countsByYear W24155352292019 @default.
- W2415535229 countsByYear W24155352292020 @default.
- W2415535229 countsByYear W24155352292022 @default.
- W2415535229 crossrefType "proceedings-article" @default.
- W2415535229 hasAuthorship W2415535229A5080330202 @default.
- W2415535229 hasConcept C115961682 @default.
- W2415535229 hasConcept C121332964 @default.
- W2415535229 hasConcept C154945302 @default.
- W2415535229 hasConcept C24890656 @default.
- W2415535229 hasConcept C38349280 @default.
- W2415535229 hasConcept C41008148 @default.
- W2415535229 hasConcept C57879066 @default.
- W2415535229 hasConcept C99498987 @default.
- W2415535229 hasConceptScore W2415535229C115961682 @default.
- W2415535229 hasConceptScore W2415535229C121332964 @default.
- W2415535229 hasConceptScore W2415535229C154945302 @default.
- W2415535229 hasConceptScore W2415535229C24890656 @default.
- W2415535229 hasConceptScore W2415535229C38349280 @default.
- W2415535229 hasConceptScore W2415535229C41008148 @default.
- W2415535229 hasConceptScore W2415535229C57879066 @default.
- W2415535229 hasConceptScore W2415535229C99498987 @default.
- W2415535229 hasLocation W24155352291 @default.
- W2415535229 hasOpenAccess W2415535229 @default.
- W2415535229 hasPrimaryLocation W24155352291 @default.
- W2415535229 hasRelatedWork W185733981 @default.
- W2415535229 hasRelatedWork W1984560925 @default.
- W2415535229 hasRelatedWork W2000794185 @default.
- W2415535229 hasRelatedWork W2040499981 @default.
- W2415535229 hasRelatedWork W2043699726 @default.
- W2415535229 hasRelatedWork W2089218326 @default.
- W2415535229 hasRelatedWork W2091474092 @default.
- W2415535229 hasRelatedWork W2100665530 @default.
- W2415535229 hasRelatedWork W2279382477 @default.
- W2415535229 hasRelatedWork W2992395496 @default.
- W2415535229 isParatext "false" @default.
- W2415535229 isRetracted "false" @default.
- W2415535229 magId "2415535229" @default.
- W2415535229 workType "article" @default.