TY - GEN
T1 - Investigation of "loud" modes in a high-speed jet to identify noise-producing events
AU - Berger, Zachary P.
AU - Berry, Matthew G.
AU - Shea, Patrick R.
AU - Glauser, Mark N.
AU - Kan, Pinqing
AU - Lewalle, Jacques
AU - Ruscher, Christopher J.
AU - Gogineni, Sivaram P.
N1 - Funding Information:
The authors would like to acknowledge the Phase I and Phase II SBIR with Spectral Energies, LLC. through AFRL/RQTE, with Dr. Barry Kiel as program manager, for the ongoing support and interactions throughout these research endeavors. The authors would also like to acknowledge the College of Engineering and Computer Science at Syracuse University as well as the Syracuse University Center for Advanced Systems and Engineering (CASE) for their support on this project.
Publisher Copyright:
© 2015 by Zachary Berger.
PY - 2015
Y1 - 2015
N2 - The current investigation focuses on a fully compressible, axisymmetric jet operating at high subsonic conditions. The test bed of interest includes 10 kHz time-resolved particle image velocimetry coupled with simultaneously sampled near and far-field pressure measurements. The experimental results to be presented have been conducted in the Syracuse University anechoic chamber at the Skytop campus. This study focuses on identifying possible noise-producing events in the flow field by implementing reduced-order modeling techniques to extract "loud" modes in the flow. These concepts are coupled with wavelet-based diagnostic tracking techniques to examine the spatial and temporal nature of the "loud" modes. For this work, Mach 0.6 and Mach 0.85 will be the focus, in an effort to understand the noise-producing structures in a subsonic jet. The overall goal of this work is to effciently link near-field velocity with far-field acoustics to identify the interactions of the flow field responsible for far-field noise generation. Low-dimensional "loud" modes can then be implemented into closed-loop control algorithms in real-time for far-field noise suppression. This paper will focus on these "loud" modes, primarily linking the flow physics directly to the acoustics.
AB - The current investigation focuses on a fully compressible, axisymmetric jet operating at high subsonic conditions. The test bed of interest includes 10 kHz time-resolved particle image velocimetry coupled with simultaneously sampled near and far-field pressure measurements. The experimental results to be presented have been conducted in the Syracuse University anechoic chamber at the Skytop campus. This study focuses on identifying possible noise-producing events in the flow field by implementing reduced-order modeling techniques to extract "loud" modes in the flow. These concepts are coupled with wavelet-based diagnostic tracking techniques to examine the spatial and temporal nature of the "loud" modes. For this work, Mach 0.6 and Mach 0.85 will be the focus, in an effort to understand the noise-producing structures in a subsonic jet. The overall goal of this work is to effciently link near-field velocity with far-field acoustics to identify the interactions of the flow field responsible for far-field noise generation. Low-dimensional "loud" modes can then be implemented into closed-loop control algorithms in real-time for far-field noise suppression. This paper will focus on these "loud" modes, primarily linking the flow physics directly to the acoustics.
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U2 - 10.2514/6.2015-0739
DO - 10.2514/6.2015-0739
M3 - Conference contribution
AN - SCOPUS:84982966078
SN - 9781624103438
T3 - 53rd AIAA Aerospace Sciences Meeting
BT - 53rd AIAA Aerospace Sciences Meeting
PB - American Institute of Aeronautics and Astronautics Inc, AIAA
T2 - 53rd AIAA Aerospace Sciences Meeting, 2015
Y2 - 5 January 2015 through 9 January 2015
ER -