Positivity-preserving space-time CE/SE schemesfor high-speed flows

Hua Shen, Matteo Parsani

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

We develop a space-time conservation element and solution element (CE/SE) scheme using a simple slope limiter to preserve the positivity of the density and pressure in computations of inviscid and viscous high-speed flows. In general, the limiter works with all existing CE/SE schemes. Here, we test the limiter on a central Courant number insensitive (CNI) CE/SE scheme implemented on hybrid unstructured meshes. Numerical examples show that the proposed limiter preserves the positivity of the density and pressure without disrupting the conservation law; it also improves robustness without losing accuracy in solving high-speed flows.

Original languageEnglish (US)
Title of host publication21st AIAA International Space Planes and Hypersonics Technologies Conference, Hypersonics 2017
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
ISBN (Print)9781624104633
StatePublished - Jan 1 2017
Event21st AIAA International Space Planes and Hypersonics Technologies Conference, Hypersonics 2017 - Xiamen, China
Duration: Mar 6 2017Mar 9 2017

Publication series

Name21st AIAA International Space Planes and Hypersonics Technologies Conference, Hypersonics 2017

Other

Other21st AIAA International Space Planes and Hypersonics Technologies Conference, Hypersonics 2017
CountryChina
CityXiamen
Period03/6/1703/9/17

ASJC Scopus subject areas

  • Aerospace Engineering
  • Control and Systems Engineering
  • Space and Planetary Science

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