RANS analysis of merging supersonic streamwise vortices for enhanced mixing in scramjet combustors

Streamwise vortices are studied as a mixing enhancer for scramjet combustors due to their insensitivity to compressibility relative to spanwise structures. A specific merging interaction between supersonic corotating vortices has been shown in experiments to sustain turbulence production against dec...

Full description

Saved in:

Bibliographic Details
Main Authors:	Dónal McCaughey, Marco Geron, Rob Watson
Format:	Default Conference proceeding
Published:	2021
Subjects:	Combustors Scramjet Engines Vortex Structure Freestream Mach Number No Slip Condition Compressibility Numerical Analysis Aerodynamic Flows Supersonic Wind Tunnels Turbulence Models
Online Access:	https://hdl.handle.net/2134/19316489.v1
Tags:	Add Tag No Tags, Be the first to tag this record!

id	rr-article-19316489
record_format	Figshare
spelling	rr-article-193164892021-12-29T00:00:00Z RANS analysis of merging supersonic streamwise vortices for enhanced mixing in scramjet combustors Dónal McCaughey (12210914) Marco Geron (7583732) Rob Watson (11532607) Combustors Scramjet Engines Vortex Structure Freestream Mach Number No Slip Condition Compressibility Numerical Analysis Aerodynamic Flows Supersonic Wind Tunnels Turbulence Models Streamwise vortices are studied as a mixing enhancer for scramjet combustors due to their insensitivity to compressibility relative to spanwise structures. A specific merging interaction between supersonic corotating vortices has been shown in experiments to sustain turbulence production against decay. In this paper this interaction is investigated numerically to determine how well it can be replicated with a RANS approach, and the effect of increasing the Mach number. The shape and rotation of the merging vortices appears similar to experimental results. The decay of vorticity follows a similar trend to experimental results, however the vorticity was higher in the RANS results. At higher Mach numbers the merging process appears to be pushed further down the domain. 2021-12-29T00:00:00Z Text Conference contribution 2134/19316489.v1 https://figshare.com/articles/conference_contribution/RANS_analysis_of_merging_supersonic_streamwise_vortices_for_enhanced_mixing_in_scramjet_combustors/19316489 CC BY-NC-ND 4.0
institution	Loughborough University
collection	Figshare
topic	Combustors Scramjet Engines Vortex Structure Freestream Mach Number No Slip Condition Compressibility Numerical Analysis Aerodynamic Flows Supersonic Wind Tunnels Turbulence Models
spellingShingle	Combustors Scramjet Engines Vortex Structure Freestream Mach Number No Slip Condition Compressibility Numerical Analysis Aerodynamic Flows Supersonic Wind Tunnels Turbulence Models Dónal McCaughey Marco Geron Rob Watson RANS analysis of merging supersonic streamwise vortices for enhanced mixing in scramjet combustors
description	Streamwise vortices are studied as a mixing enhancer for scramjet combustors due to their insensitivity to compressibility relative to spanwise structures. A specific merging interaction between supersonic corotating vortices has been shown in experiments to sustain turbulence production against decay. In this paper this interaction is investigated numerically to determine how well it can be replicated with a RANS approach, and the effect of increasing the Mach number. The shape and rotation of the merging vortices appears similar to experimental results. The decay of vorticity follows a similar trend to experimental results, however the vorticity was higher in the RANS results. At higher Mach numbers the merging process appears to be pushed further down the domain.
format	Default Conference proceeding
author	Dónal McCaughey Marco Geron Rob Watson
author_facet	Dónal McCaughey Marco Geron Rob Watson
author_sort	Dónal McCaughey (12210914)
title	RANS analysis of merging supersonic streamwise vortices for enhanced mixing in scramjet combustors
title_short	RANS analysis of merging supersonic streamwise vortices for enhanced mixing in scramjet combustors
title_full	RANS analysis of merging supersonic streamwise vortices for enhanced mixing in scramjet combustors
title_fullStr	RANS analysis of merging supersonic streamwise vortices for enhanced mixing in scramjet combustors
title_full_unstemmed	RANS analysis of merging supersonic streamwise vortices for enhanced mixing in scramjet combustors
title_sort	rans analysis of merging supersonic streamwise vortices for enhanced mixing in scramjet combustors
publishDate	2021
url	https://hdl.handle.net/2134/19316489.v1
_version_	1800176470819078144

RANS analysis of merging supersonic streamwise vortices for enhanced mixing in scramjet combustors

Similar Items