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Citation: Jing Huiqiang, Zhang Xiaoning, Li Yanfeng, et al. Design and analysis of a new kind of hydraulic active filter[J]. Journal of Beijing University of Aeronautics and Astronautics, 2013, 39(8): 1091-1095. (in Chinese)

Design and analysis of a new kind of hydraulic active filter

  • Received Date: 07 Sep 2012
  • Rev Recd Date: 12 Apr 2013
  • Publish Date: 30 Aug 2013
  • In view of the current hydraulic active filter of large volume, complex structure and other problems, a new type of hydraulic active pressure fluctuation filter (HAPFF) was present with simple structure and small volume. The method of computational fluid dynamics (CFD) was employed to investigate the pressure field distribution in time domain and three group data of Dm(excitation amplitude) and fm(excitation frequency) were involved. The results indicate that the performance of the HAPFF depends on Dm and fm, if they match the equivalent parameters of the original unstable flow rate, then the HAPFF perform well, which agree with the wave interference well. The calculation denotes that the peak-peak pressure value reduced to 0.25 MPa from 2.26 MPa when fm=525 Hz and Dm=0.05 mm (that is to say, the pressure fluctuation dropped to ±0.6% from ±5.38%), which verify the effectiveness of the proposed design.

     

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