In this work, a numerical model has been applied in order to obtain the wall pressure fluctuations at the volute of an industrial centrifugal fan. The numerical results have been compared to experimental results obtained in the same machine. A three-dimensional numerical simulation of the complete unsteady flow on the whole impeller-volute configuration has been carried out using the computational fluid dynamics code FLUENT®. This code has been employed to calculate the time-dependent pressure both in the impeller and in the volute. In this way, the pressure fluctuations in some locations over the volute wall have been obtained. The power spectra of these fluctuations have been obtained, showing an important peak at the blade passing frequency. The amplitude of this peak presents the highest values near the volute tongue, but the spatial pattern over the volute extension is different depending on the operating conditions. A good agreement has been found between the numerical and the experimental results.
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March 2006
Technical Papers
Numerical Calculation of Pressure Fluctuations in the Volute of a Centrifugal Fan
Rafael Ballesteros-Tajadura,
e-mail: rballest@uniovi.es
Rafael Ballesteros-Tajadura
Universidad de Oviedo
, Área de Mecánica de Fluidos, Campus de Gijón, 33271 Gijón. Asturias, Spain
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Sandra Velarde-Suárez,
Sandra Velarde-Suárez
Universidad de Oviedo
, Área de Mecánica de Fluidos, Campus de Gijón, 33271 Gijón. Asturias, Spain
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Juan Pablo Hurtado-Cruz,
Juan Pablo Hurtado-Cruz
Universidad de Oviedo
, Área de Mecánica de Fluidos, Campus de Gijón, 33271 Gijón. Asturias, Spain
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Carlos Santolaria-Morros
Carlos Santolaria-Morros
Universidad de Oviedo
, Área de Mecánica de Fluidos, Campus de Gijón, 33271 Gijón. Asturias, Spain
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Rafael Ballesteros-Tajadura
Universidad de Oviedo
, Área de Mecánica de Fluidos, Campus de Gijón, 33271 Gijón. Asturias, Spaine-mail: rballest@uniovi.es
Sandra Velarde-Suárez
Universidad de Oviedo
, Área de Mecánica de Fluidos, Campus de Gijón, 33271 Gijón. Asturias, Spain
Juan Pablo Hurtado-Cruz
Universidad de Oviedo
, Área de Mecánica de Fluidos, Campus de Gijón, 33271 Gijón. Asturias, Spain
Carlos Santolaria-Morros
Universidad de Oviedo
, Área de Mecánica de Fluidos, Campus de Gijón, 33271 Gijón. Asturias, SpainJ. Fluids Eng. Mar 2006, 128(2): 359-369 (11 pages)
Published Online: September 6, 2005
Article history
Received:
February 23, 2005
Revised:
September 6, 2005
Citation
Ballesteros-Tajadura, R., Velarde-Suárez, S., Hurtado-Cruz, J. P., and Santolaria-Morros, C. (September 6, 2005). "Numerical Calculation of Pressure Fluctuations in the Volute of a Centrifugal Fan." ASME. J. Fluids Eng. March 2006; 128(2): 359–369. https://doi.org/10.1115/1.2170121
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