New scaling laws for hot and cold jet mixing noise based on a geometric acoustics model

摘要: Abstract New scaling laws are presented for hot turbulent jet mixing noise outside the cone of silence. These account mean flow field effects on sound radiation via an analytical high frequency approximate solution to Lilley's equation. Numerical calculations from sources in a cylindrical shear used test validity approximation. The proposed yield excellent collapse measurements over wide range conditions. resulting information has been incorporated into prediction scheme which, with appropriate modifications approximation, can be applied both inside and angles silence will described subsequent paper.