This article presents two dimensional (2D) and three-dimensional (3D) computational analysis of rotating detonation combustion (RDC) in annular chambers using the commercial computational fluid dynamics (CFD) solver ANSYS-Fluent V13. The applicability of ANSYS-Fluent to predict the predominant phenomena taking place in the combustion chamber of a rotating detonation combustor is assessed. Simulations are performed for stoichiometric Hydrogen-Air combustion using two different chemical mechanisms. First, a widely used one-step reaction mechanism that uses mass fraction of the reactant as a progress variable, then a reduced chemical mechanism for H2-Air combustion including NOx chemistry was employed. Time dependent 2D and 3D simulations are carried out by solving Euler equations for compressible flows coupled with chemical reactions. Fluent user defined functions (UDF) were constructed and integrated into the commercial CFD solver in order to model the micro nozzle and slot injection system for fuel and oxidizer, respectively. Predicted pressure and temperature fields and detonation wave velocities are compared for the two reaction mechanisms. Curvature effects on the properties of transverse detonation waves are studied by comparing the 2D and 3D simulations. The effects of diffusion terms on RDC phenomena are assessed by solving full Navier-Stokes equations and comparing the results with those from Euler equations. Computational results are compared with experimentally measured pressure data obtained from the literature. Results show that the detonation wave velocity is over predicted in all the simulations. However, good agreement between computational and experimental data for the pressure field and transverse detonation wave structure proves adequate capabilities of ANSYS-Fluent to predict the main physical characteristics of RDC operation. Finally, various improvements for RDC modeling are postulated, particularly for better prediction of wave velocity.
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ASME Turbo Expo 2013: Turbine Technical Conference and Exposition
June 3–7, 2013
San Antonio, Texas, USA
Conference Sponsors:
- International Gas Turbine Institute
ISBN:
978-0-7918-5510-2
PROCEEDINGS PAPER
Numerical Investigation of Rotating Detonation Combustion in Annular Chambers
Sergio Escobar,
Sergio Escobar
National Energy Technology Laboratory, Morgantown, WV
West Virginia University, Morgantown, WV
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Suryanarayana R. Pakalapati,
Suryanarayana R. Pakalapati
National Energy Technology Laboratory, Morgantown, WV
West Virginia University, Morgantown, WV
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Ismail Celik,
Ismail Celik
National Energy Technology Laboratory, Morgantown, WV
West Virginia University, Morgantown, WV
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Donald Ferguson,
Donald Ferguson
National Energy Technology Laboratory, Morgantown, WV
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Peter Strakey
Peter Strakey
National Energy Technology Laboratory, Morgantown, WV
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Sergio Escobar
National Energy Technology Laboratory, Morgantown, WV
West Virginia University, Morgantown, WV
Suryanarayana R. Pakalapati
National Energy Technology Laboratory, Morgantown, WV
West Virginia University, Morgantown, WV
Ismail Celik
National Energy Technology Laboratory, Morgantown, WV
West Virginia University, Morgantown, WV
Donald Ferguson
National Energy Technology Laboratory, Morgantown, WV
Peter Strakey
National Energy Technology Laboratory, Morgantown, WV
Paper No:
GT2013-94918, V01AT04A071; 9 pages
Published Online:
November 14, 2013
Citation
Escobar, S, Pakalapati, SR, Celik, I, Ferguson, D, & Strakey, P. "Numerical Investigation of Rotating Detonation Combustion in Annular Chambers." Proceedings of the ASME Turbo Expo 2013: Turbine Technical Conference and Exposition. Volume 1A: Combustion, Fuels and Emissions. San Antonio, Texas, USA. June 3–7, 2013. V01AT04A071. ASME. https://doi.org/10.1115/GT2013-94918
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