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Unsteady simulations of single-cavity trapped vortex combustion

Singhal, A and Shetty, DA and Ravikrishna, RV (2007) Unsteady simulations of single-cavity trapped vortex combustion. In: 6th Asia-Pacific Conference on Combustion, ASPACC 2007, 20-23 May 2007, Nagoya Congress Centre Nagoya, Japan.

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The present work describes unsteady, non-reacting and reacting flow simulations of Trapped Vortex Combustion. The primary motivation of this study is to provide fundamental insight into the cavity flow dynamics for further development of this concept into a working combustor for modern gas turbine engines. Unsteady, non-reacting flow simulations for different L/D ratios indicate that there is no vortex shedding from the cavity but there are weak oscillations in the spanwise direction of the combustor, justifying the use of steadystate assumption for the reacting flow. Steady, reacting flow simulations for different cases indicate that flow dynamics in the combustor is affected by presence of walls on two sides. As wall-effect is reduced by increasing width of the combustor, flow becomes more two-dimensional. For case with L/D of 1 and L/W of 0.27, combustion efficiency is highest and pattern factor is least. © 2007 Combustion Institute. All Rights Reserved.

Item Type: Conference Paper
Publication: 6th Asia-Pacific Conference on Combustion, ASPACC 2007
Publisher: Combustion Institute
Additional Information: Copyright for this article belongs to Combustion Institute
Keywords: Combustors; Flow simulation; Vortex flow, Combustion efficiencies; Flow dynamics; Nonreacting flow; Pattern factors; Reacting flows; Single cavity; Trapped vortex combustions; Unsteady simulations, Combustion
Department/Centre: Division of Mechanical Sciences > Mechanical Engineering
Date Deposited: 08 Apr 2021 06:47
Last Modified: 08 Apr 2021 06:47
URI: http://eprints.iisc.ac.in/id/eprint/65411

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