Fitting Jet Noise Similarity Spectra to Volcano Infrasound Data
Sign Up to like & getrecommendations! Published in 2021 at "Earth and Space Science"
DOI: 10.1029/2021ea001894
Abstract: Infrasound (low‐frequency acoustic waves) has proven useful to detect and characterize subaerial volcanic activity, but understanding the infrasonic source during sustained eruptions is still an area of active research. Preliminary comparison between acoustic eruption spectra… read more here.
Keywords: noise similarity; similarity spectra; jet noise; jet ... See more keywords
Experimental validation of the hybrid scattering model of installed jet noise
Sign Up to like & getrecommendations! Published in 2018 at "Physics of Fluids"
DOI: 10.1063/1.5036951
Abstract: Jet installation causes jet noise to be amplified significantly at low frequencies and its physical mechanism must be understood to develop effective aircraft noise reduction strategies. A hybrid semi-empirical prediction model has recently been developed… read more here.
Keywords: jet; installed jet; physics; jet noise ... See more keywords
Evaluating the effectiveness of subarrays in beamforming computations of complex jet noise source environments
Sign Up to like & getrecommendations! Published in 2018 at "Journal of the Acoustical Society of America"
DOI: 10.1121/1.5035614
Abstract: Conventional acoustic beamforming methods, while powerful for localizing acoustic sources, require an uncorrelated monopole assumption, depend on the input array location, and are unreliable in a complex source environment, such as jet engine noise. The… read more here.
Keywords: jet; source; jet noise; noise ... See more keywords
Large-eddy simulation of supersonic jet noise emanating from an F404 nozzle at model scale
Sign Up to like & getrecommendations! Published in 2018 at "Journal of the Acoustical Society of America"
DOI: 10.1121/1.5067448
Abstract: Large-eddy simulations of supersonic jet noise emanating from an F404 nozzle at the model scale have been carried out using the JENRE flow solver. A wall-model method that was previously validated for a high subsonic… read more here.
Keywords: large eddy; jet noise; model; geometry ... See more keywords
Using the Correlation Model of Random Quadrupoles of Sources to Calculate the Efficiency of Turbulent Jet Noise Screening with Geometric Diffraction Theory
Sign Up to like & getrecommendations! Published in 2020 at "Acoustical Physics"
DOI: 10.1134/s1063771020050024
Abstract: The paper presents the results of a computational–experimental study of jet noise reduction using the screening effect. According to correlation theory, the noise sources of a single circular jet are represented by a set of… read more here.
Keywords: theory; jet noise; geometric diffraction; jet ... See more keywords
Experimental Study of Vapor Supercavitation Suppression of Capillary Outlet Jet Noise
Sign Up to like & getrecommendations! Published in 2021 at "Journal of Mathematics"
DOI: 10.1155/2021/9936291
Abstract: The degree of bubble bursting at the inlet of an evaporator is the key factor to determine the size of the injection noise at the capillary outlet. In this study, by using the theory of… read more here.
Keywords: capillary outlet; outlet; study; jet noise ... See more keywords
Similarity scaling of jet noise sources for low-order jet noise modelling based on the Goldstein generalised acoustic analogy
Sign Up to like & getrecommendations! Published in 2017 at "International Journal of Aeroacoustics"
DOI: 10.1177/1475472x17730457
Abstract: As a first step towards a robust low-order modelling framework that is free from either calibration parameters based on the far-field noise data or any assumptions about the noise source structure, a new low-order noise… read more here.
Keywords: acoustic analogy; low order; jet; jet noise ... See more keywords
Role of nozzle-exit boundary layer in producing jet noise
Sign Up to like & getrecommendations! Published in 2022 at "International Journal of Aeroacoustics"
DOI: 10.1177/1475472x221107375
Abstract: Often the measurements from different jet noise studies, which are thought to have been acquired at or corrected to identical jet conditions, do not match when compared to each other. This study looks at the… read more here.
Keywords: nozzle exit; exit boundary; jet; boundary layer ... See more keywords
Jet Noise in Airframe Integration and Shielding
Sign Up to like & getrecommendations! Published in 2020 at "Applied Sciences"
DOI: 10.3390/app10020511
Abstract: This paper reviews and presents new results on the effect of airframe integration and shielding on jet noise. Available experimental data on integration effects are analyzed. The available options for the computation of jet noise… read more here.
Keywords: jet noise; airframe integration; integration shielding; integration ... See more keywords
Numerical Simulation of Vacuum Leak Jet and Jet Noise
Sign Up to like & getrecommendations! Published in 2020 at "Applied Sciences"
DOI: 10.3390/app10103640
Abstract: With the explosive growth of space debris, collisions among space debris and spacecrafts seem to be inevitable, which may greatly threaten the structure of on-orbit spacecrafts as well as astronauts’ safety. It is of crucial… read more here.
Keywords: jet; jet jet; jet noise; vacuum ... See more keywords
Combined CFD-Stochastic Analysis of an Active Fluidic Injection System for Jet Noise Reduction
Sign Up to like & getrecommendations! Published in 2017 at "Applied Sciences"
DOI: 10.3390/app7060623
Abstract: In the framework of DANTE project (Development of Aero-Vibroacoustics Numerical and Technical Expertise), funded under the Italian Aerospace Research Program (PRORA), the prediction and reduction of noise from subsonic jets through the reconstruction of turbulent… read more here.
Keywords: reduction; jet noise; noise; injection ... See more keywords