@inproceedings{2396a6011bcb425fad99b4d7ca85fb72,
title = "Near-field shocks radiated by high-speed free-shear-flow turbulence",
abstract = "Temporally developing turbulent planar free shear layers with Mach numbers M = 1:5, 2:5, and 3:5 are directly simulated to provide a geometrically simplified model of the generation of a peculiar sound, known as 'crackle'. Sound-field pressure skewness for M = 2:5 and 3:5 cases exceed Sk(p′) > 0:4, which has been correlated with perception of crackle. Statistics related to Mach wave angle and wave density indicate nonlinear interactions in the very near acoustic field in these same cases. Results show both merging of multiple waves and attening of non-planar waves into approximately planar weak shocks.",
author = "Buchta, {David A.} and Anderson, {Aaron T.} and Freund, {Jonathan B.}",
year = "2014",
doi = "10.2514/6.2014-3201",
language = "English (US)",
isbn = "9781624102851",
series = "20th AIAA/CEAS Aeroacoustics Conference",
publisher = "American Institute of Aeronautics and Astronautics Inc.",
booktitle = "20th AIAA/CEAS Aeroacoustics Conference",
note = "20th AIAA/CEAS Aeroacoustics Conference 2014 ; Conference date: 16-06-2014 Through 20-06-2014",
}