2008
DOI: 10.1115/1.2953229
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Noise Prediction of a Centrifugal Fan: Numerical Results and Experimental Validation

Abstract: Centrifugal fans are widely used in several applications, and in some cases, the noise generated by these machines has become a serious problem. The centrifugal fan noise is frequently dominated by tones at the blade passing frequency as a consequence of the strong interaction between the flow discharged from the impeller and the volute tongue. In this study, a previously published aeroacoustic prediction methodology (Cho, Y., and Moon, Y.J., 2003, “Discrete Noise Prediction of Variable Pitch Cross-Flow Fans b… Show more

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Cited by 33 publications
(10 citation statements)
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“…The continuity equation and momentum equations were solved independently of the energy equation because of the isothermal flow. The standard k-ε turbulence model, which Ballesteros-Tajadura [30] and Cai [31] applied to capture wall pressure fluctuations, was used in the present simulation of the unsteady flow field. A coupled solver, which uses a fully implicit discretization scheme to solve all of the equations (corresponding to the velocity and pressure), was used.…”
Section: Methodsmentioning
confidence: 99%
“…The continuity equation and momentum equations were solved independently of the energy equation because of the isothermal flow. The standard k-ε turbulence model, which Ballesteros-Tajadura [30] and Cai [31] applied to capture wall pressure fluctuations, was used in the present simulation of the unsteady flow field. A coupled solver, which uses a fully implicit discretization scheme to solve all of the equations (corresponding to the velocity and pressure), was used.…”
Section: Methodsmentioning
confidence: 99%
“…Table 2 were solved independently of the energy equation because of the isothermal flow. The Standard k-ε turbulence model, which was applied to capture wall pressure fluctuations by Ballesteros-Tajadura [24] and Cai [25], was used in the present simulation of the unsteady flow field. A coupled solver, which uses a fully implicit discretization scheme to solve all of the equations (corresponding to the velocity and pressure), was used.…”
Section: Dynamic Pressure Measurementmentioning
confidence: 99%
“…Among the types of passive noise control methods, we can mention acoustic silencers, noise barriers and, noise absorbing panels [ 2 ]. In the meantime, silencers or mufflers are used to reduce the noise propagated from numerous sources such as internal combustion engines, fans, compressors, turbines, air conditioning systems, blowers and so on [ 3 ]. There are various types of silencers which includes reactive, absorptive and hybrid ones.…”
Section: Introductionmentioning
confidence: 99%