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Numerical studies of vortex shedding in forced oscillatory non-premixed flames

Research output: Contribution in Book/Report/Proceedings - With ISBN/ISSNConference contribution/Paperpeer-review

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Numerical studies of vortex shedding in forced oscillatory non-premixed flames. / Jiang, Xi.

9th World Congress on Computational Mechanics and 4th Asian Pacific Congress on Computational Mechanics. ed. / N Khalili; S Valliappan; Q Li; A Russell. BRISTOL : IOP Publishing Ltd, 2010. p. -.

Research output: Contribution in Book/Report/Proceedings - With ISBN/ISSNConference contribution/Paperpeer-review

Harvard

Jiang, X 2010, Numerical studies of vortex shedding in forced oscillatory non-premixed flames. in N Khalili, S Valliappan, Q Li & A Russell (eds), 9th World Congress on Computational Mechanics and 4th Asian Pacific Congress on Computational Mechanics. IOP Publishing Ltd, BRISTOL, pp. -. https://doi.org/10.1088/1757-899X/10/1/012030

APA

Jiang, X. (2010). Numerical studies of vortex shedding in forced oscillatory non-premixed flames. In N. Khalili, S. Valliappan, Q. Li, & A. Russell (Eds.), 9th World Congress on Computational Mechanics and 4th Asian Pacific Congress on Computational Mechanics (pp. -). IOP Publishing Ltd. https://doi.org/10.1088/1757-899X/10/1/012030

Vancouver

Jiang X. Numerical studies of vortex shedding in forced oscillatory non-premixed flames. In Khalili N, Valliappan S, Li Q, Russell A, editors, 9th World Congress on Computational Mechanics and 4th Asian Pacific Congress on Computational Mechanics. BRISTOL: IOP Publishing Ltd. 2010. p. - https://doi.org/10.1088/1757-899X/10/1/012030

Author

Jiang, Xi. / Numerical studies of vortex shedding in forced oscillatory non-premixed flames. 9th World Congress on Computational Mechanics and 4th Asian Pacific Congress on Computational Mechanics. editor / N Khalili ; S Valliappan ; Q Li ; A Russell. BRISTOL : IOP Publishing Ltd, 2010. pp. -

Bibtex

@inproceedings{819f8b5b624844ca8ca47e00e7484817,
title = "Numerical studies of vortex shedding in forced oscillatory non-premixed flames",
abstract = "A comparative study has been performed to investigate the flow instabilities and their interactions in a non-premixed methane jet flame using highly accurate numerical methods. The interaction between the jet flapping modes and buoyancy instability has been examined by comparing a full three-dimensional case and an idealised axisymmetric case, in order to identify the three-dimensional effects on the vortex dynamics. In addition, air co-flow flames have been numerically simulated to investigate the interaction between the shear and buoyancy instabilities. It was found that three-dimensional effects dominate the flame dynamics at downstream locations, where the flame exhibits transitional behaviour. The axisymmetric simulation is only able to capture the flow dynamics close to the jet nozzle exit. The air co-flow tends to stabilise the flame and to reduce the flame unsteadiness, which may also have an impact on the flickering frequency. Three-dimensional effects can greatly affect the strength of flame oscillation energy at downstream location, where the flapping modes enhance the flame unsteadiness. On the contrary, co-flow tends to reduce the strength of flame oscillation, especially at upstream locations.",
keywords = "JET DIFFUSION FLAMES, SIMULATION, DYNAMICS, COMBUSTION, SCHEMES, PLUMES, COFLOW, AIR",
author = "Xi Jiang",
year = "2010",
doi = "10.1088/1757-899X/10/1/012030",
language = "English",
isbn = "*****************",
pages = "--",
editor = "N Khalili and S Valliappan and Q Li and A Russell",
booktitle = "9th World Congress on Computational Mechanics and 4th Asian Pacific Congress on Computational Mechanics",
publisher = "IOP Publishing Ltd",

}

RIS

TY - GEN

T1 - Numerical studies of vortex shedding in forced oscillatory non-premixed flames

AU - Jiang, Xi

PY - 2010

Y1 - 2010

N2 - A comparative study has been performed to investigate the flow instabilities and their interactions in a non-premixed methane jet flame using highly accurate numerical methods. The interaction between the jet flapping modes and buoyancy instability has been examined by comparing a full three-dimensional case and an idealised axisymmetric case, in order to identify the three-dimensional effects on the vortex dynamics. In addition, air co-flow flames have been numerically simulated to investigate the interaction between the shear and buoyancy instabilities. It was found that three-dimensional effects dominate the flame dynamics at downstream locations, where the flame exhibits transitional behaviour. The axisymmetric simulation is only able to capture the flow dynamics close to the jet nozzle exit. The air co-flow tends to stabilise the flame and to reduce the flame unsteadiness, which may also have an impact on the flickering frequency. Three-dimensional effects can greatly affect the strength of flame oscillation energy at downstream location, where the flapping modes enhance the flame unsteadiness. On the contrary, co-flow tends to reduce the strength of flame oscillation, especially at upstream locations.

AB - A comparative study has been performed to investigate the flow instabilities and their interactions in a non-premixed methane jet flame using highly accurate numerical methods. The interaction between the jet flapping modes and buoyancy instability has been examined by comparing a full three-dimensional case and an idealised axisymmetric case, in order to identify the three-dimensional effects on the vortex dynamics. In addition, air co-flow flames have been numerically simulated to investigate the interaction between the shear and buoyancy instabilities. It was found that three-dimensional effects dominate the flame dynamics at downstream locations, where the flame exhibits transitional behaviour. The axisymmetric simulation is only able to capture the flow dynamics close to the jet nozzle exit. The air co-flow tends to stabilise the flame and to reduce the flame unsteadiness, which may also have an impact on the flickering frequency. Three-dimensional effects can greatly affect the strength of flame oscillation energy at downstream location, where the flapping modes enhance the flame unsteadiness. On the contrary, co-flow tends to reduce the strength of flame oscillation, especially at upstream locations.

KW - JET DIFFUSION FLAMES

KW - SIMULATION

KW - DYNAMICS

KW - COMBUSTION

KW - SCHEMES

KW - PLUMES

KW - COFLOW

KW - AIR

U2 - 10.1088/1757-899X/10/1/012030

DO - 10.1088/1757-899X/10/1/012030

M3 - Conference contribution/Paper

SN - *****************

SP - -

BT - 9th World Congress on Computational Mechanics and 4th Asian Pacific Congress on Computational Mechanics

A2 - Khalili, N

A2 - Valliappan, S

A2 - Li, Q

A2 - Russell, A

PB - IOP Publishing Ltd

CY - BRISTOL

ER -