Flow-induced noise generation in a simple fluid valve model

摘要

Noise-source mechanisms for a simple fluid valve model were observed and compared with predicted mechanisms. Hydroacoustic scaling laws for the noise sources were derived by dimensional analysis of the governing equations. A comparison of the predicted mechanisms with experimental data indicated that the scaling laws could be further improved by a re-examination of the influence of the impact parameters. This was done by an extended analysis of the influence of geometrical parameters on acoustical characteristics. Additional parameters were determined statistically using non-linear multiple regression analysis of the experimental data. The estimated correlation between the observed and predicted values for the applied geometrical and hydrodynamic parameters is good. (C) 2004 Institute of Noise Control Engineering.