Gas Flow Noise from the pump chamber of Rolling Piston compressors Based on CFD

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Journal of Vibration and Shock ›› 2012, Vol. 31 ›› Issue (3) : 123-126.

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Gas Flow Noise from the pump chamber of Rolling Piston compressors Based on CFD

YUE Xiang-ji1, BA De-chun1, SU Zheng-yu2, JI Kai2, LI Ai-ming1

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Abstract

In order to analyze gas flow noise from the chamber of rolling piston compressors, an effective method was presented based on computational fluid dynamics (CFD). Through the flow simulation of pump chamber by using dynamics mesh technology, the vortexes with larger turbulence intensity were found, and the location and mechanism of vortexes formation were analyzed. Then amplitude and frequency of vibration excitation were evaluated by gas force on the wall from CFD. The comparative results with or without silencer hole explained the principle of noise reduction, and validated the method. The proposal has also been arise to control flow and noise.

Key words

Rolling piston compressors / Computational fluid dynamics / Gas flow noise / Silencer hole / Dynamics mesh

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YUE Xiang-ji;BA De-chun;SU Zheng-yu;JI Kai;LI Ai-ming. Gas Flow Noise from the pump chamber of Rolling Piston compressors Based on CFD[J]. Journal of Vibration and Shock, 2012, 31(3): 123-126