Numerical analysis of acoustic noise from an electronic cooling fan at flow disturbed by an external obstacle
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Conference PaperDate:
2022-08-24Access:
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Wasala, S., Stevens, L., Sosseh, R. and Persoons, T., Numerical analysis of acoustic noise from an electronic cooling fan at flow disturbed by an external obstacle, 51st International Congress on Noise Control Engineering, Glasgow, UK, 21-24 August 2022Download Item:
Abstract:
Axial cooling fans are widely used in data center dense Hard Disk Drive (HDD) storage systems. However,
these fans emit high noise levels and degrade HDD performance at certain frequencies.
Flow at the fan's inlet can be highly turbulent due to the wake generated by fan components such as struts,
finger guards, stators/guide vanes, shrouds, and other external system components such as connectors and
mounts, power cables and components, circuits etc. The wake-fan interaction also causes high tonal noise.
Therefore a proper understanding of this noise mechanism will help optimize the cooling system in nextgeneration high-performance HDD enclosure systems.
This paper focuses on studying this phenomenon using numerical simulations of a typical data center
cooling fan combined with various simplified strut geometries as the obstacle. The high-fidelity
Computational Fluid Dynamic (CFD) method, Large Eddy Simulation (LES), was used to obtain a transient
flow field. The Ffowcs-Williams and Hawkings acoustic analogy was used to predict far-field noise.
Sponsor
Grant Number
Science Foundation Ireland (SFI for RF)
21/IRDIF/9837
Science Foundation Ireland (SFI)
13/RC/2077
SFI/HEA Irish Centre for High-End Computing (ICHEC)
Author's Homepage:
http://people.tcd.ie/wasalashttp://people.tcd.ie/persoont
Other Titles:
51st International Congress on Noise Control EngineeringPublisher:
internoise2022.orgType of material:
Conference PaperAvailability:
Full text availableKeywords:
Aerodynamics, Aeroacoustics, Fan noise, Computational Fluid Dynamics, Data Centers, Hard Disk DrivesSubject (TCD):
Smart & Sustainable Planet , Computational Aeroacoustics , Computational Fluid Dynamics , Computer Storage & Retrieval , Design Engineering , Fan Noise , Vibration and Accoustic EngineeringSource URI:
https://az659834.vo.msecnd.net/eventsairwesteuprod/production-inconference-public/f920d98062284904aa04e266f2b2f90bMetadata
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