Pressure velocity coupling in a subsonic round jet

✍ Scribed by C. Picard; J. Delville

• Publisher: Elsevier Science
• Year: 2000
• Tongue: English
• Weight: 933 KB
• Volume: 21
• Category: Article
• ISSN: 0142-727X
• DOI: 10.1016/s0142-727x(00)00021-7

✦ Synopsis

An experimental investigation involving simultaneous measurements of the radial distribution of velocity within the shear layer of a jet and the longitudinal distribution of pressure surrounding a jet is performed. The use of two statistical approaches (proper orthogonal decomposition, POD and linear stochastic estimation, LSE) permits the analysis, in terms of vortical structures, of the pressure ¯uctuations surrounding the jet. These structures are found to be responsible for the far-®eld noise emission. This method thus seems promising for providing a ``structural model'' of the turbulent ¯ow ®eld.