This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Reducing the Acoustic Surface Power of a Cooling Fan Using the Mesh Morpher Optimizer
Technical Paper
2017-01-1610
ISSN: 0148-7191, e-ISSN: 2688-3627
This content contains downloadable datasets
Annotation ability available
Sector:
Language:
English
Abstract
Cooling fans have many applications in industrial and electronic fields that remove heat away from the system. The process of designing a new cooling fan with optimal performance and reduced acoustic sources can be fairly lengthy and expensive. The use of CFD with support of mesh morphing, along with the development of optimization techniques, can improve the acoustic’s performance of the fan model. This paper presents a new promising method which will support the design process of a new cooling fan with improved performance and less acoustic surface power generation. The CFD analysis is focused on reducing the acoustic surface power of a given cooling fan’s blade using the surface dipole acoustic power as the objective function, which leads to an optimized prototype design for a better performance. The Mesh Morpher Optimizer (MMO) in ANSYS Fluent is used in combination with a Simplex model of the broadband acoustic modeling. The broadband model assists to estimate the acoustic power of the surface dipole sources on the surface of the blade without the need for expensive unsteady simulations. The monopole and quadrupole acoustics sources are ignored due to the relatively low fan speed considered in this study. The numerical results obtained through the new method have shown a reduced dipole surface intensity to be 47.2% of the original value. It is believed that with additional work and further studies, the results may be improved by modifying the mesh and using different objective functions.
Recommended Content
Authors
Topic
Citation
Kheirallah, M., Jawad, B., and Liu, L., "Reducing the Acoustic Surface Power of a Cooling Fan Using the Mesh Morpher Optimizer," SAE Technical Paper 2017-01-1610, 2017, https://doi.org/10.4271/2017-01-1610.Data Sets - Support Documents
Title | Description | Download |
---|---|---|
Unnamed Dataset 1 | ||
Unnamed Dataset 2 | ||
Unnamed Dataset 3 |
Also In
References
- Chanaud R. C. , Muster D. Aerodynamic noise from motor vehicles The Journal of the Acoustical Society of America 58 1 1975 31 38
- Tsubota H. Research and Development of Ring Fan Komatsu Technical Report 2007
- Kim S. et al. Computational Aeroacoustic Modeling of Open Fan and Comparison of Predicted and Experimental Noise Fields NOISE-CON Denver, Colorado August 26-28, 2013
- Lighthill M.J. On sound generated aerodynamically I Proceedings of the Royal Society of London, Series A211 564 587 1952
- Lighthill M.J. On sound generated aerodynamically II Proceedings of the Royal Society of London, Series A222 1 32 1954
- Ffowcs-Williams J.E. and Hawkings D.L. Sound generation by turbulence and surfaces in arbitrary motion Proc. Royal Soc. London 264 321 342 1968
- Dowling A.P. and Williams J.E. Ffowcs Sound and Sources of Sound Ellis Horwood Publishers Chichester, UK 1983
- Neise W. Review of fan noise generation mechanisms and control methods Fan Noise Symposium CETIM France 45 56 1992
- Curle N. The Influence of Solid Boundaries upon Aerodynamic Sound Proceedings of the Royal Society of London. Series A, Mathematical and Physical Sciences 231 505 514 1955
- The Boundary Layer Noise Source Model ANSYS Fluent User’s Guide
- Broadband Noise Source Models ANSYS Fluent User’s Guide
- I. ANSYS Solution Optimizer, Adjoint Solver, and Mesh Morpher 2014
- Eggenspieler G. Mesh Morphing and Optimizer ANSYS, Inc May 14 2012