Analysis and optimization of aerodynamic noise in a centrifugal compressor

Sun, Hyosung; Shin, Hyung-Ki; Lee, Soogab

doi:10.1016/j.jsv.2005.03.004

Cited by 31 publications

(13 citation statements)

References 6 publications

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“…There are several surrogate model types as listed in Table 3, such as Response Surface Methodology (RSM), Radial Basis Function (RBF), and Kriging, which have been extensively used in recent years to solve engineering optimization design. Unlike other approaches, RSM applies simple algebraic expressions to generate the function relationship, and it is very suitable for complex engineering applications [47]. In addition, RBF has the best approach for high dimensionality optimization problems according to a literature survey [48].…”

Section: Surrogate Models Selectionmentioning

confidence: 99%

CFD Optimization Process of a Lateral Inlet/Outlet Diffusion Part of a Pumped Hydroelectric Storage Based on Optimal Surrogate Models

et al. 2019

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The lateral inlet/outlet plays a critical role in the connecting tunnels of a water delivery system in a pumped hydroelectric storage (PHES). Therefore, the shape of the inlet/outlet was improved through computational fluid dynamics (CFD) optimization based on optimal surrogate models. The CFD method applied in this paper was validated by a physical experiment that was carefully designed to meet bidirectional flow requirements. To determine a good compromise between the generation and pump mode, reasonable weights were defined to better evaluate the overall performance. In order to find suitable surrogate models to improve the optimization process, the best suited surrogate models were identified by an optimal model selection method. The optimal configurations of the surrogate model for the head loss and the velocity distribution coefficient were the Kriging model with a Gaussian kernel and the Kriging model with an Exponential kernel, respectively. Finally, a multi-objective surrogate-based optimization method was used to determine the optimum design. The overall head loss coefficient and velocity distribution coefficients were 0.248 and 1.416. Compared with the original shape, the coefficients decrease by 6.42% and 40.28%, respectively. The methods and findings of this work may provide practical guidelines for designers and researchers.

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Section: Surrogate Models Selectionmentioning

confidence: 99%

CFD Optimization Process of a Lateral Inlet/Outlet Diffusion Part of a Pumped Hydroelectric Storage Based on Optimal Surrogate Models

et al. 2019

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“…The frequency domain approach of Ffowcs WilliamsHawkings formulation applicable to the computed domain is chosen as the governing equation for the noise prediction [28], which has been used also by [24], [25] for predicting the aerodynamic noise in a centrifugal compressor. The ANSYS-FLUENT program with parallel processing, version 14.5 [26] was used to solve the filtered governing equations, which are discretized by the finite volume method.…”

Section: Test Case Presentationsmentioning

confidence: 99%

“…Since cavity effects are shown to be significant, in this research, a model of compressor with and without the hub cavity is proposed. Centrifugal compressor hub cavity flow simulation has been neglected by a lot of previous works, which discuss the aeroacoustic simulation for centrifugal compressors [16], [24] and [25].…”

Section: Introductionmentioning

confidence: 99%

Aeroacoustic Simulation for NASA CC3 Centrifugal Compressor Operating at off Design Condition

et al. 2016

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Abstract. This paper covers the characterization of the acoustic noise and the unsteady flow field of a high speed centrifugal compressor NASA CC3. In order to accurately predict the noise, all analyses are carried out through the use of Large Eddy Simulation and Ffowcs Williams-Hawkings model for noise prediction. The relative effect of hub cavity on flow characteristics and sound levels is investigated, for a compressor stage with a total pressure ratio equal to 4, working from surge to near choke condition. In comparison with the experimental results from literature, the predicted compressor performance and flow field are predicted well. The hub cavity flow effect on the compressor aeroacoustic generated noise is shown in the paper. The unsteady static pressure and sound pressure levels are compared not only at different location but also for design and off design operating points. The internal flow results inside the hub cavity are presented at surge, design and near choke points. The conclusion is that the cavity effect of the centrifugal compressor cannot be ignored in the numerical prediction of aerodynamic generated noise. The impeller back plate of the rotor experiences a strong pressure fluctuation, which is maxima at the impeller outer radius for all operating point, but higher pressure values at the surge point.

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“…Benini [9] explored an evolutionary optimization algorithm to optimize meridional geometry, by which the secondary flows across the impeller could been reduced greatly. A numerical method coupled with the optimization design methodology, which was consisted of reaction surface method (RSM), statistical approach and genetic algorithm, was developed to obtain optimized hub and shroud line by Sun [10]. Meanwhile, Cho [11] used an evolutionary algorithm with the help of a Bezier curve to make efficiency higher without the reducing of the pressure ratio.…”

Section: Introductionmentioning

confidence: 99%

Research on the Simplified Design of a Centrifugal Compressor Impeller Based on Meridional Plane Modification

et al. 2018

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This study mainly focuses on investigating the influence of meridional contour of a steam centrifugal compressor on aerodynamic performance. An optimal design method is put forwards, in which the hub-line on the meridional plane is modified and optimized. Based on the data from numerical simulation, aerodynamic characteristics are compared in detail among a prototype and three modified impellers. It is shown that stall margin of the optimized impeller can be enlarged by approximately 50%, though at design point efficiency and pressure ratio is decreased a little bit. Under the working conditions with low flow rate, the optimized impeller exhibits the best performance compared with the prototype and two other impellers. Furthermore, numerical result is validated by the experiment and is matched the measure data very well.

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Analysis and optimization of aerodynamic noise in a centrifugal compressor

Cited by 31 publications

References 6 publications

CFD Optimization Process of a Lateral Inlet/Outlet Diffusion Part of a Pumped Hydroelectric Storage Based on Optimal Surrogate Models

CFD Optimization Process of a Lateral Inlet/Outlet Diffusion Part of a Pumped Hydroelectric Storage Based on Optimal Surrogate Models

Aeroacoustic Simulation for NASA CC3 Centrifugal Compressor Operating at off Design Condition

Research on the Simplified Design of a Centrifugal Compressor Impeller Based on Meridional Plane Modification

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