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

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conference contribution
posted on 2022-03-08, 09:24 authored by Dónal McCaughey, Marco Geron, Rob WatsonRob Watson
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.

History

School

  • Aeronautical, Automotive, Chemical and Materials Engineering

Department

  • Aeronautical and Automotive Engineering

Published in

AIAA Science and Technology Forum and Exposition, AIAA SciTech Forum 2022

Source

AIAA SCITECH Forum 2022

Publisher

American Institute of Aeronautics and Astronautics, Inc.

Version

  • AM (Accepted Manuscript)

Rights holder

© Dónal McCaughey

Publisher statement

This is the accepted version of a paper presented at the AIAA SCITECH 2022 Forum. The definitive published version is available at https://doi.org/10.2514/6.2022-1410

Publication date

2021-12-29

Copyright date

2022

ISBN

9781624106316

Language

  • en

Location

San Diego, CA, USA & Virtual

Event dates

3rd January 2022 - 7th January 2022

Depositor

Dr Rob Watson. Deposit date: 7 March 2022

Article number

AIAA 2022-1410

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