European Turbulence Conference 2015

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15:30
15 mins

Large-Eddy Simulation of Turbulent Supersonic Cold Flow in Ramp-Cavity Combustor With Injector
Zia Ghiasi, Dongru Li, Jonathan Komperda, Farzad Mashayek, Arnab Chaudhuri, Gustaaf Jacobs

Session: Large Eddy Simulation 2
Session starts: Thursday 27 August, 15:00
Presentation starts: 15:30
Room: Room E

Zia Ghiasi (University of Illinois at Chicago)
Dongru Li (University of Illinois at Chicago)
Jonathan Komperda (University of Illinois at Chicago)
Farzad Mashayek (University of Illinois at Chicago)
Arnab Chaudhuri (San Diego State University)
Gustaaf Jacobs (San Diego State University)

Abstract:
Development of efficient supersonic propulsion systems requires a deep understanding of the flow within such combustors. Performing numerical simulation of flow in a scramjet engine is challenging due to the concurrent presence of shock waves and turbulence. In this work, we employ a high-order discontinuous spectral element method (DSEM). An entropy-based artificial viscosity method is used to capture the shock and the turbulence model is the standard Smagorinsky-Lilly model in conduction with two new sensors that prevent addition of turbulent viscosity in non-turbulent regions. Results are presented for the simulation of supersonic turbulent cold flow in a ramp-cavity combustor with an injector at the ramped side of the cavity. The Reynolds number based on the cavity height and mean inlet flow velocity is Re=25,288 and the Mach number is Ma=2.