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LES of an Inclined Jet into a Supersonic Turbulent Crossflow

Ferrante, Antonino and Matheou, Georgios and Dimotakis, Paul E. and Stephens, Mike and Adams, Paul and Walters, Richard (2009) LES of an Inclined Jet into a Supersonic Turbulent Crossflow. . (Unpublished)

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This short article describes flow parameters, numerical method, and animations of the fluid dynamics video "LES of an Inclined Jet into a Supersonic Turbulent Crossflow" (this http URL [high-resolution] and this http URL [low-resolution] video). We performed large-eddy simulation with the sub-grid scale (LES-SGS) stretched-vortex model of momentum and scalar transport to study the gas-dynamics interactions of a helium inclined round jet into a supersonic (M = 3.6) turbulent (Re_θ = 13×10^3) air flow over a flat surface. The video shows the temporal development of Mach-number and magnitude of density-gradient in the mid-span plane, and isosurface of helium mass-fraction and λ_2 (vortical structures). The identified vortical structures are sheets, tilted tubes, and discontinuous rings. The vortical structures are shown to be well correlated in space and time with helium mass-fraction isosurface (Y_(He) = 0.25).

Item Type:Report or Paper (Discussion Paper)
Related URLs:
URLURL TypeDescription Paper
Walters, Richard0000-0002-1835-6078
Additional Information:This work was supported by AFOSR Grants FA9550-04-1-0020 and FA9550-04-1-0389, and by Caltech funds. The authors would like to thank Dr. C. Pantano for support with the AMROC software, the Center of Advanced Computing Research (CACR) at Caltech for computing time.
Funding AgencyGrant Number
Air Force Office of Scientific Research (AFOSR)FA9550-04-1-0020
Air Force Office of Scientific Research (AFOSR)FA9550-04-1-0389
Record Number:CaltechAUTHORS:20191016-143406258
Persistent URL:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:99307
Deposited By: Tony Diaz
Deposited On:16 Oct 2019 21:46
Last Modified:09 Mar 2020 13:19

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