@inproceedings{b9ab7a5f8c684e578c1ef9d2aa72bcaf,
title = "Stability and sensitivity analysis of a low-speed jet in cross-flow",
abstract = "The JICF is studied using direct numerical simulation of the linearized Navier-Stokes equations, as well as their adjoint, at a Reynolds number of 2000, and two jet-to-cross-flow velocity ratios: R = 2 with an absolutely unstable upstream shear-layer, and R = 4 with a convectively unstable upstream shear-layer. Linear stability analysis of the JICF reveals that the dominant eigenmodes are shear-layer modes whose frequencies match frequencies of the upstream shear-layer observed in simulation and experiment. Asymmetric modes are shown to be more important to the overall dynamics at higher jet-to-cross-flow ratios. Adjoint modes show that the upstream shear-layer is most sensitive to perturbations along the upstream side of the jet nozzle exit. Wavemaker results are shown to be consistent with the transition of the upstream shear-layer from absolute to convective instability.",
author = "Regan, {Marc A.} and Krishnan Mahesh",
year = "2019",
month = jan,
day = "1",
doi = "10.2514/6.2019-0888",
language = "English (US)",
isbn = "9781624105784",
series = "AIAA Scitech 2019 Forum",
publisher = "American Institute of Aeronautics and Astronautics Inc, AIAA",
booktitle = "AIAA Scitech 2019 Forum",
note = "AIAA Scitech Forum, 2019 ; Conference date: 07-01-2019 Through 11-01-2019",
}