Broadband Shock Noise Reduction in Turbulent Jets by Water Injection

Kandula, Max

PID  :  NTRS Document ID: 20130012638
RP-ID  :  KSC-2008-196

学科分类：声学和超声波

美国|英语

来源: NASA Technical Reports Server

【 摘 要 】

The concept of effective jet properties introduced by the author (AIAA-2007-3 645) has been extended to the estimation of broadband shock noise reduction by water injection in supersonic jets. Comparison of the predictions with the test data for cold underexpanded supersonic nozzles shows a satisfactory agreement. The results also reveal the range of water mass flow rates over which saturation of mixing noise reduction and existence of parasitic noise are manifest.