A Formulation and Implementation of Adjoint-Based Supersonic Jet Noise Reduction

2014 ◽  
Author(s):  
Andrew T. Corrigan ◽  
Zachary Spears ◽  
Junhui Liu ◽  
Ravi Ramamurti ◽  
Kailas Kailasanath
Keyword(s):  
Noise Reduction ◽  
Supersonic Jet ◽  
Jet Noise ◽  
Supersonic Jet Noise

Effect of Axial Location of Micro Vortex Generators on Supersonic Jet Noise Reduction

2022 ◽  
Author(s):  
Junhui Liu ◽  
Yu Yu Khine ◽  
Mohammad Saleem ◽  
Omar Lopez Rodriguez ◽  
Ephraim J. Gutmark
Keyword(s):  
Noise Reduction ◽  
Supersonic Jet ◽  
Jet Noise ◽  
Vortex Generators ◽  
Supersonic Jet Noise ◽  
Axial Location

Supersonic Jet Noise Reduction Using Micro Vortex Generators

2021 ◽  
Author(s):  
Junhui Liu ◽  
Yu Yu Khine ◽  
Mohammad Saleem ◽  
Omar Lopez Rodriguez ◽  
Ephraim Gutmark
Keyword(s):  
Noise Reduction ◽  
Supersonic Jet ◽  
Jet Noise ◽  
Vortex Generators ◽  
Supersonic Jet Noise

Enhanced Supersonic Jet Noise Reduction using Two Array Configurations of Micro Vortex Generators

2022 ◽  
Author(s):  
Mohammad Saleem ◽  
Omar Lopez Rodriguez ◽  
Ephraim J. Gutmark ◽  
Junhui Liu ◽  
Yu Yu Khine
Keyword(s):  
Noise Reduction ◽  
Supersonic Jet ◽  
Jet Noise ◽  
Vortex Generators ◽  
Supersonic Jet Noise

Influence of Microjet Injection on Supersonic Jet Noise and Flow Field

2011 ◽  
Author(s):  
Ryuichi Okada ◽  
Toshinori Watanabe ◽  
Seiji Uzawa ◽  
Takehiro Himeno ◽  
Tsutomu Oishi
Keyword(s):  
Flow Field ◽  
Noise Reduction ◽  
Sound Pressure ◽  
Supersonic Jet ◽  
Jet Noise ◽  
Cfd Analysis ◽  
Jet Engines ◽  
Acoustic Measurements ◽  
Pressure Data ◽  
Supersonic Jet Noise

Jet noise reduction is essential for realization of environmentally-friendly and highly-efficient supersonic jet engines for future civil transport. In the present study, experimental and numerical investigations were conducted to clarify the effect of microjet injection on supersonic jet noise. The experiments were focused on supersonic jet with Mach number up to 1.49 that was generated from a rectangular nozzle with high aspect ratio. Far field acoustic measurements were executed and the spectra and sound pressure data of jet noise were obtained. In order to understand the mechanism of noise reduction, flow field visualization was performed with shadowgraph technique. CFD analysis was conducted as well to observe the flow field and to estimate thrust loss due to the microjet injection.

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