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A Combined CFD-FEM Approach to Predict Fluid-Borne Vibrations and Noise Radiation of a Rotary Vane Pump

Author

Listed:
  • Timm Hieronymus

    (Robert Bosch Automotive Steering GmbH, Richard-Bullinger-Straße 77, 73527 Schwaebisch Gmuend, Germany)

  • Thomas Lobsinger

    (Robert Bosch Automotive Steering GmbH, Richard-Bullinger-Straße 77, 73527 Schwaebisch Gmuend, Germany)

  • Gunther Brenner

    (Institute of Applied Mechanics, Clausthal University of Technology, Adolph-Roemer-Straße 2A, 38678 Clausthal-Zellerfeld, Germany)

Abstract

The rising demand for lower noise emissions of car ancillary units due to electrification and higher customer expectations regarding driving comfort results in the need for more silent car components. Hydraulic driven car components in particular are often identified as a major source of noise in the system. Therefore, it is mandatory to investigate the noise sources inside the hydraulic system. In this work, a combined CFD-FEM approach is applied to estimate the flow-induced noise radiation of a mechanically driven transmission pump. To achieve this goal, the mapping procedure to hand over the pressure field from the CFD to the FEM mesh must be valid. For this purpose, the error during the mapping process is evaluated and different parameters, which influence the mapping results, are analyzed. Additionally, the impact of the time step size and the length of the time signal on the frequency resolution of the force signal is investigated to get an appropriate excitation force for the vibroacoustic simulation. Subsequently, a force analysis and a structural FEM simulation are performed to identify which flow phenomenon contributes most to the excitation of the pump housing. Specific locations in the pump with high loads are pointed out. In a final step, the results of the vibroacoustic model are compared to acceleration and sound pressure level measurements of the pump performed in a hemi-anechoic room.

Suggested Citation

  • Timm Hieronymus & Thomas Lobsinger & Gunther Brenner, 2021. "A Combined CFD-FEM Approach to Predict Fluid-Borne Vibrations and Noise Radiation of a Rotary Vane Pump," Energies, MDPI, vol. 14(7), pages 1-23, March.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:7:p:1874-:d:526036
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    References listed on IDEAS

    as
    1. Sangbeom Woo & Timothy Opperwall & Andrea Vacca & Manuel Rigosi, 2017. "Modeling Noise Sources and Propagation in External Gear Pumps," Energies, MDPI, vol. 10(7), pages 1-20, July.
    2. Houlin Liu & Jian Ding & Hanwei Dai & Minggao Tan & Xiaochen Tang, 2014. "Numerical Research on Hydraulically Generated Vibration and Noise of a Centrifugal Pump Volute with Impeller Outlet Width Variation," Mathematical Problems in Engineering, Hindawi, vol. 2014, pages 1-13, October.
    3. Thomas Lobsinger & Timm Hieronymus & Gunther Brenner, 2020. "A CFD Investigation of a 2D Balanced Vane Pump Focusing on Leakage Flows and Multiphase Flow Characteristics," Energies, MDPI, vol. 13(13), pages 1-24, June.
    4. Timm Hieronymus & Thomas Lobsinger & Gunther Brenner, 2020. "Investigation of the Internal Displacement Chamber Pressure of a Rotary Vane Pump," Energies, MDPI, vol. 13(13), pages 1-19, June.
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