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Reconstruction and Prediction of Flow Field Fluctuation Intensity and Flow-Induced Noise in Impeller Domain of Jet Centrifugal Pump Using Gappy POD Method

Author

Listed:
  • Rong Guo

    (College of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou 730050, China)

  • Rennian Li

    (College of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou 730050, China
    Key Laboratory of Fluid Machinery and Systems, Lanzhou University of Technology, Lanzhou 730050, China)

  • Renhui Zhang

    (College of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou 730050, China
    Key Laboratory of Fluid Machinery and Systems, Lanzhou University of Technology, Lanzhou 730050, China)

Abstract

To analyze the interrelations among impeller blade geometry, flow field fluctuation intensity and impeller-induced hydrodynamic noise of jet centrifugal pump (JCP), a Gappy proper orthogonal decomposition (POD) method combined with computational fluid dynamics/computational fluid acoustics (CFD/CFA) technique was proposed to reconstruct and predict the unsteady flow field fluctuation intensity and flow-induced noise in impeller region. The snapshot sets were composed of blade profile parameters, flow field fluctuation intensity data and the data of sound pressure level of hydrodynamic noise in the frequency domain. Similar mesh reconstruction and flow field interpolation were carried out to have the same number of flow field data. The snapshot sets were decomposed into a linear combination of orthogonal bases using the singular value decomposition (SVD) method. The orthogonal basis coefficients corresponding to the objective variables were fitted by the least square method. The results show that the proposed method has a good accuracy in predicting the flow field fluctuation intensity and flow-induced noise of the JCP impeller domain. The relative error of pressure fluctuation intensity field is less than 4.0%, relative velocity fluctuation intensity field is less than 3.0%, turbulent kinetic energy fluctuation intensity field is less than 4.5%, and impeller-induced hydrodynamic noise is less than 10%. Taking the method as a surrogate model to predict the flow field fluctuation intensity and the radiation level of hydrodynamic noise in the optimization process of centrifugal pump impeller, it could not only reduce the calculation amount and time significantly and improve optimization speed and efficiency greatly but could also provide a reference for vibration characteristics of the models.

Suggested Citation

  • Rong Guo & Rennian Li & Renhui Zhang, 2018. "Reconstruction and Prediction of Flow Field Fluctuation Intensity and Flow-Induced Noise in Impeller Domain of Jet Centrifugal Pump Using Gappy POD Method," Energies, MDPI, vol. 12(1), pages 1-17, December.
    • Handle: RePEc:gam:jeners:v:12:y:2018:i:1:p:111-:d:193958
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    References listed on IDEAS

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    1. Chang Guo & Ming Gao & Dongyue Lu & Kun Wang, 2017. "An Experimental Study on the Radiation Noise Characteristics of a Centrifugal Pump with Various Working Conditions," Energies, MDPI, vol. 10(12), pages 1-14, December.
    2. Yi Wang & Shuyu Sun & Bo Yu, 2017. "Acceleration of Gas Flow Simulations in Dual-Continuum Porous Media Based on the Mass-Conservation POD Method," Energies, MDPI, vol. 10(9), pages 1-17, September.
    3. Mohammed El-Adawy & Morgan R. Heikal & A. Rashid A. Aziz & Muhammad I. Siddiqui & Shahzad Munir, 2017. "Characterization of the Inlet Port Flow under Steady-State Conditions Using PIV and POD," Energies, MDPI, vol. 10(12), pages 1-16, November.
    4. Ming Gao & Peixin Dong & Shenghui Lei & Ali Turan, 2017. "Computational Study of the Noise Radiation in a Centrifugal Pump When Flow Rate Changes," Energies, MDPI, vol. 10(2), pages 1-11, February.
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    1. Lei Shi & Hongwei Ma & Lixiang Wang, 2019. "Analysis of Different POD Processing Methods for SPIV-Measurements in Compressor Cascade Tip Leakage Flow," Energies, MDPI, vol. 12(6), pages 1-25, March.

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