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Your search keyword '"MITCHELL, DANIEL M."' showing total 24 results
Start Over Author "MITCHELL, DANIEL M." Publisher american institute of aeronautics and astronautics
24 results on '"MITCHELL, DANIEL M."'

10. Dynamics of round jet impingement

Author

Jaunet, Vincent, primary, Mancinelli, Matteo, additional, Jordan, Peter, additional, Towne, Aaron, additional, Edgington-Mitchell, Daniel M., additional, Lehnasch, Guillaume, additional, and Girard, Stève, additional

Published
2019
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14. The Effect of Underexpansion on a Jet in Cross Flow

Author

Knast, Thomas, primary, Mears, Lee, additional, Arora, Nishal, additional, Guha, Tufan K., additional, Edgington-Mitchell, Daniel M., additional, Honnery, Damon R., additional, Kumar, Rajan, additional, and Alvi, Farrukh S., additional

Published
2018
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24. Understanding twin-jet screech using a vortex-sheet model

Author

Peter Jordan, Matteo Mancinelli, Michael Stavropoulos, Petrônio A. S. Nogueira, Daniel Edgington-Mitchell, Vincent Jaunet, Stavropoulos, Michael N., Mancinelli, Matteo, Jordan, Peter, Jaunet, Vincent, Edgington-Mitchell, Daniel M., Nogueira, Petrônio A. S., Stavropoulos, M. N., Mancinelli, M., Jordan, P., Jaunet, V., Edgington-Mitchell, D. M., and Nogueira, P. A. S.

Subjects
Physics, Jet (fluid), Vortex sheet, Mechanics
Abstract

A twin-jet vortex-sheet model is applied to study the axisymmetric screech modes, generated by simply converging nozzles, for low supersonic Mach numbers. This allows for the identification of the different waves supported by the flow for different conditions. Propagative regions for the upstream-propagating neutral guided jet mode are observed to vary both as a function of solution symmetry, SS and SA, and the jet separation, whilst bounding the screech tones. The A1 screech mode is observed to be cut-off sharply by the SS lower bound. Screech frequency predictions are performed using the wavenumbers obtained from the vortex-sheet model, which provided a good qualitative agreement with the experimental data. Additional A1 and A2 screech tones were observed in the acoustic spectrum as the jet separation was increased, pointing to the existence of new resonance cycles associated with the different symmetries of the flow. These additional tones exist simultaneously and are seen to merge together as increases leaving only a single A1 and A2 tone.

Published
2021

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