An empirical model of noise sources in subsonic jets

U Karban, B Bugeat, A Towne, L Lesshafft… - Journal of Fluid …, 2023 - cambridge.org
Modelling the noise emitted by turbulent jets is made difficult by their acoustic inefficiency:
only a tiny fraction of the near-field turbulent kinetic energy is propagated to the far field as …

Active noise control of a supersonic underexpanded planar jet guided by resolvent analysis

LL Liang, ZH Wan, MX She, DJ Sun… - Journal of Fluid …, 2024 - cambridge.org
This study is dedicated to achieving efficient active noise control in a supersonic
underexpanded planar jet, utilizing control parameters informed by resolvent analysis. The …

Identification of structures driving trailing-edge noise. Part I--Experimental investigation

S Demange, Z Yuan, S Jekosch, E Sarradj… - arXiv preprint arXiv …, 2024 - arxiv.org
Trailing-edge (TE) noise is the main contributor to the acoustic signature of flows over
airfoils. It originates from the interaction of turbulent structures in the airfoil boundary layer …

Localized resolvent-mode bases for turbulence statistics

ER Eichberger, L Heidt, T Colonius - 30th AIAA/CEAS Aeroacoustics …, 2024 - arc.aiaa.org
Modes from global resolvent analyses have been shown to accurately model the
frequencies and spatial structure of the dominant coherent structures in several turbulent …