Prediction of turbulent jet mixing noise reduction by water injection

被引：0
|
作者：
Kandula, Max [1 ,2 ]
机构：
[1] ASRC Aerospace, NASA Kennedy Space Center, FL 32899, United States
[2] MailStop ASRC-5211
来源：
AIAA Journal | 2008年 / 46卷 / 11期
关键词：
A one-dimensional control volume formulation is developed for the determination of jet mixing noise reduction due to water injection. The analysis starts from the conservation of mass; momentum; and energy for the control volume and introduces the concept of effective jet parameters (jet temperature; jet velocity; and jet Mach number). It is shown that the water-to-jet mass flow rate ratio is an important parameter characterizing the jet noise reduction on account of gas-to-droplet momentum and heat transfer. Two independent dimensionless invariant groups are postulated and provide the necessary relations for the droplet size and droplet Reynolds number. Results are presented illustrating the effect of mass flow rate ratio on the jet mixing noise reduction for a range of jet Mach numbers and jet Reynolds numbers. Predictions from the model show satisfactory comparison with available test data on perfectly expanded hot supersonic jets. The results suggest that significant noise reductions can be achieved at increased flow rate ratios. Copyright © 2008 by the American Institute of Aeronautics and Astronautics; Inc;
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学科分类号：
摘要：
Conference article (CA)
引用
收藏
页码：2714 / 2722
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