Two-dimensional axisymmetric simulation of under-expanded supersonic impinging jet

M. Li; J. Soria; A. Ooi

Two-dimensional axisymmetric simulation of under-expanded supersonic impinging jet

M. Li, J. Soria, A. Ooi

Mechanical & Aerospace Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference Paper › Other

Abstract

This paper investigates the unsteady flow features of two-dimensional (2D) axisymmetric under-expanded supersonic impinging jet with a nozzle pressure ratio (NPR) of 3.5 and a distance ratio (z/D) of 2.5. A comparison between 2D axisymmetric, three-dimensional (3D) Large Eddy Simulation (LES) and experimental data is given. Good agreement can be seen in mean profiles and shock location data. Utilizing spectral and Proper Orthogonal Decomposition (POD) tools, two acoustic contributions of the 2D axisymmetric simulation are observed at the dominant tone frequency. The first one is responsible for acoustic waves propagating to the far field and the other one observed from the sides of the jet plume contributes to the feedback mechanism. Furthermore, the oscillation of the stand-off shock may be one of the triggers of the feedback mechanism of 2D axisymmetric simulation, which is consistent with Henderson and Powell’s hypothesis[4].

Original language	English
Title of host publication	Proceedings of the 21st Australasian Fluid Mechanics Conference
Editors	Timothy C.W. Lau, Richard M. Kelso
Publisher	Australasian Fluid Mechanics Society
ISBN (Electronic)	9780646597843
Publication status	Published - 2018
Event	Australasian Fluid Mechanics Conference 2018 - Adelaide Convention Centre, Adelaide, Australia Duration: 10 Dec 2018 → 13 Dec 2018 Conference number: 21st https://aomevents.eventsair.com/QuickEventWebsitePortal/21st-australasian-fluid-mechanics-conference/afmc2018

Publication series

Name	Proceedings of the 21st Australasian Fluid Mechanics Conference, AFMC 2018

Conference

Conference	Australasian Fluid Mechanics Conference 2018
Abbreviated title	AFMC 2018
Country	Australia
City	Adelaide
Period	10/12/18 → 13/12/18
Internet address	https://aomevents.eventsair.com/QuickEventWebsitePortal/21st-australasian-fluid-mechanics-conference/afmc2018

Cite this

Li, M., Soria, J., & Ooi, A. (2018). Two-dimensional axisymmetric simulation of under-expanded supersonic impinging jet. In T. C. W. Lau, & R. M. Kelso (Eds.), Proceedings of the 21st Australasian Fluid Mechanics Conference (Proceedings of the 21st Australasian Fluid Mechanics Conference, AFMC 2018). Australasian Fluid Mechanics Society.

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title = "Two-dimensional axisymmetric simulation of under-expanded supersonic impinging jet",

abstract = "This paper investigates the unsteady flow features of two-dimensional (2D) axisymmetric under-expanded supersonic impinging jet with a nozzle pressure ratio (NPR) of 3.5 and a distance ratio (z/D) of 2.5. A comparison between 2D axisymmetric, three-dimensional (3D) Large Eddy Simulation (LES) and experimental data is given. Good agreement can be seen in mean profiles and shock location data. Utilizing spectral and Proper Orthogonal Decomposition (POD) tools, two acoustic contributions of the 2D axisymmetric simulation are observed at the dominant tone frequency. The first one is responsible for acoustic waves propagating to the far field and the other one observed from the sides of the jet plume contributes to the feedback mechanism. Furthermore, the oscillation of the stand-off shock may be one of the triggers of the feedback mechanism of 2D axisymmetric simulation, which is consistent with Henderson and Powell’s hypothesis[4].",

author = "M. Li and J. Soria and A. Ooi",

year = "2018",

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Li, M, Soria, J & Ooi, A 2018, Two-dimensional axisymmetric simulation of under-expanded supersonic impinging jet. in TCW Lau & RM Kelso (eds), Proceedings of the 21st Australasian Fluid Mechanics Conference. Proceedings of the 21st Australasian Fluid Mechanics Conference, AFMC 2018, Australasian Fluid Mechanics Society, Australasian Fluid Mechanics Conference 2018, Adelaide, Australia, 10/12/18.

Two-dimensional axisymmetric simulation of under-expanded supersonic impinging jet. / Li, M.; Soria, J.; Ooi, A.

Proceedings of the 21st Australasian Fluid Mechanics Conference. ed. / Timothy C.W. Lau; Richard M. Kelso. Australasian Fluid Mechanics Society, 2018. (Proceedings of the 21st Australasian Fluid Mechanics Conference, AFMC 2018).

Research output: Chapter in Book/Report/Conference proceeding › Conference Paper › Other

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