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Large-eddy simulations and measurements of a small scale high-speed coflowing jet
journal contribution
posted on 2023-06-08, 14:31 authored by Simon Eastwood, Paul Tucker, Hao Xia, Paul Dunkley, Peter CarpenterMeasurements and predictions are made of a short-cowl coflowing jet with a bypass ratio of 8:1. The Reynolds number is 300,000, and the inlet Mach numbers are representative of aeroengine conditions. The low Reynolds number of the measurements makes the case well suited to the assessment of large-eddy-simulation-related strategies. The nozzle concentricity is carefully controlled to deal with the emerging metastability issues of jets with coflow. Measurements of mean quantities and turbulence statistics are made using both laser Doppler anemometry and particle image velocimetry. The simulations are completed on 6 x 10(6), 12 x 10(6), and 50 x 10(6) cell meshes. To overcome near-wall modeling problems, a hybrid large-eddy-simulation–Reynolds-averaged-Navier–Stokesrelated method is used. The near-wall Reynolds-averaged-Navier–Stokes layer is helpful in preventing nonphysical separation from the nozzle wall.
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Publication status
- Published
Journal
AIAA JournalISSN
0001-1452Publisher
American Institute of Aeronautics and AstronauticsExternal DOI
Issue
5Volume
48Page range
963-974Department affiliated with
- Engineering and Design Publications
Full text available
- No
Peer reviewed?
- Yes
Legacy Posted Date
2013-03-04Usage metrics
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