Numerical study on a compound hydraulic pulsation attenuator based on string-fluid resonance

Shang, Xiaobang; Zhou, Hua; Yang, Huayong

doi:10.1007/s12206-020-0902-0

Cited by 5 publications

(2 citation statements)

References 17 publications

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“…Through simulation, the insertion loss is more than 15 dB in 450-1000 Hz. In 2020, Xia et al [22] designed a compound pressure pulsation attenuator consisting of several string-liquid resonators and an expansion chamber. Considering geometric optimization and computational efficiency, an adaptive particle swarm optimization algorithm is proposed [23].…”

Section: Introductionmentioning

confidence: 99%

Numerical and Experimental Analysis of Pressure Pulsation Attenuator Based on Helmholtz Resonator

et al. 2023

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Due to the development of aviation hydraulic systems towards high pressure and high flow, the frequency range of pressure pulsation becomes wider, and the amplitude of pulsation increases. This puts higher requirements on the attenuation characteristics of the pressure pulsation attenuator. To reduce the damage caused by pressure pulsation to the pipeline, a Helmholtz-type pulsation attenuator (HTPA) is designed, which works through the Helmholtz resonant chamber. The theoretical model of HTPA is established by the method of lumped parameter method and distribution parametric method. The insertion loss is adopted to evaluate its attenuation characteristics. The internal pressure dynamic characteristics and attenuation effect of the HTPA are analyzed by simulation and experimentation. The results show that the pulsation attenuation rate δ was 40% after the installation of the attenuator. In the frequency range of 0–1000 Hz, the maximum insertion loss is 19 dB, which verifies the validity and correctness of the theoretical model.

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Section: Introductionmentioning

confidence: 99%

Numerical and Experimental Analysis of Pressure Pulsation Attenuator Based on Helmholtz Resonator

et al. 2023

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“…Naturally, efforts can also be made in the path of pressure transmission. Though the passive pulsation dampers are the possible solutions [ 14 , 15 , 16 ], as the passive technique, there are still some difficulties under varying operation condition. Luckily, the active control of fluid pressure ripple has been explored by researchers using diverse types of actuators in hydraulic pipe system.…”

Section: Introductionmentioning

confidence: 99%

Active Pressure Ripple Reduction of a Self-Supplied Variable Displacement Pump with Notch Least Mean Square Filter

Huang

et al. 2021

Micromachines

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As the power sources in hydraulic systems, variable displacement axial piston pumps generate flow fluctuation. Unfortunately, it results in pressure pulsation which excites the system vibration and emitted noise. The majority of studies try to eliminate the pulsation via a passive technique and the active control methodology has not been discussed in detail. In this research, the feasibility of reducing the pressure ripple by properly controlling the proportional valve has been investigated, which also supports the miniaturization of the active control system. A mathematical model of the self-supplied variable displacement pump including the control system has been developed. The filtered-X least mean square algorithm with time-delay compensation is utilized to calculate the active control signal. Simulation results show the effectiveness of the active control technique. The effect of the active control signal on the flow rate from different chambers of the pump has been analyzed. It demonstrates that the variation of the pressure pulsation should be ascribed to the comprehensive reaction of different flow rates. The major reason is that the flow of the actuator piston neutralizes the peak value of the flow ripple, generated by the nine pistons.

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Experimental and theoretical investigation of a miniature simple pressure pulsation attenuator lined with porous polyurethane material

Xu,

Xian,

Zhao

et al. 2024

Applied Acoustics

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Numerical study on a compound hydraulic pulsation attenuator based on string-fluid resonance

Cited by 5 publications

References 17 publications

Numerical and Experimental Analysis of Pressure Pulsation Attenuator Based on Helmholtz Resonator

Numerical and Experimental Analysis of Pressure Pulsation Attenuator Based on Helmholtz Resonator

Active Pressure Ripple Reduction of a Self-Supplied Variable Displacement Pump with Notch Least Mean Square Filter

Experimental and theoretical investigation of a miniature simple pressure pulsation attenuator lined with porous polyurethane material

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