An improved ducros sensor for the simulation of compressible flows with shocks

Tyler A. Hendrickson, Anand Kartha, Graham V. Candler

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

Originally designed to distinguish shocks in turbulent flows, the Ducros sensor becomes very sensitive to any flow divergence in regions of negligible vorticity, and may significantly alter the solution. We present an improvement to the Ducros sensor for use in high speed flows where shocks are present. The accurate simulation of transitional and turbulent flows with shocks requires that dissipation be added only where necessary to stabilize the solution. However, adding too much dissipation can cause small scale structures to be damped out of the solution. We propose a modification to the Ducros sensor that is less sensitive in regions of negligible vorticity, but adds an appropriate amount of dissipation in regions of discontinuity. We present two test cases to demonstrate the proposed switch’s improvement over the original Ducros sensor: a forward facing step and a double ramp.

Original languageEnglish (US)
Title of host publication2018 Fluid Dynamics Conference
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
ISBN (Print)9781624105531
DOIs
StatePublished - 2018
Event48th AIAA Fluid Dynamics Conference, 2018 - Atlanta, United States
Duration: Jun 25 2018Jun 29 2018

Publication series

Name2018 Fluid Dynamics Conference

Other

Other48th AIAA Fluid Dynamics Conference, 2018
CountryUnited States
CityAtlanta
Period6/25/186/29/18

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    Hendrickson, T. A., Kartha, A., & Candler, G. V. (2018). An improved ducros sensor for the simulation of compressible flows with shocks. In 2018 Fluid Dynamics Conference [AIAA 2018-3710] (2018 Fluid Dynamics Conference). American Institute of Aeronautics and Astronautics Inc, AIAA. https://doi.org/10.2514/6.2018-3710