Experimental and numerical flow noise modeling of flow channelsin hydraulic components

Abstract

Acoustic parameters of HN emission by perforated sleeve-dissector in outlet flow are investigated in details.Experimental and numerical research of influence of flow channel configuration of perforation holes on flow noise density is done. Acoustic characteristics of different forms of channelslike diffuser, confusor and cylinder are studied. It is shown, that the most rational form of channel is cylinder, which have the minimal flow coefficient.