Supersonic mixing control by localized pulse-periodic energy deposition

The effect of a pulse-periodic energy deposition on the mixing of a supersonic jet interacting with an oblique shock wave is solved numerically using the two-dimensional (2D) Unsteady RANS (URANS) and Euler Equations (UEE). A low- or high-density air jet at Mj = 1.05 is injected into a cocurrent sup...

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Bibliographic Details
Main Authors: Liu, F., Yan, H., Pimonov, E. A., Zheltovodov, A. A.
Format: Conference Proceeding
Language:English
Subjects:
Aerodynamics
Air jets
Computational fluid dynamics
Deposition
Euler-Lagrange equation
Inclination angle
Mach number
Oblique shock waves
Pressure recovery
Suction
Vorticity
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Summary:The effect of a pulse-periodic energy deposition on the mixing of a supersonic jet interacting with an oblique shock wave is solved numerically using the two-dimensional (2D) Unsteady RANS (URANS) and Euler Equations (UEE). A low- or high-density air jet at Mj = 1.05 is injected into a cocurrent supersonic air stream with Mach number of M∞ = 2.5. The oblique shock is generated by a ramped step with a windward side inclination angle of 20 degree. The pulse-periodic energy supply realized above the jet, enhances the mixing significantly. Such effect is caused by the large-scale vortical structures generation due to baroclinic vorticity imposed in the shear layer and the suction effect of the vortex ring induced by the energy deposition zone interacting with oblique shock. A low 4.2% loss of the time averaged total pressure recovery coefficient is obtained at the outlet of the computational domain caused by energy deposition. The differences between predicted flow field structures in the framework of URANS and UEE are discussed.
ISSN:0094-243X
1551-7616
DOI:10.1063/1.5065128