TY - GEN
T1 - High-order techniques for multi-component turbulent non-equilibrium hypersonic flows
AU - Munafò, Alessandro
AU - Vogiatzis, Konstantinos
AU - Ghosh, Debojyoti
AU - Vedula, Prakash
AU - Panesi, Marco
AU - Josyula, Eswar
N1 - Funding Information:
This work is sponsored by the Air Force under STTR contract number FA8650-19-C-2420. Part of this work was performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under Contract No. DE-AC52-07NA27344. This document was prepared as an account of work sponsored by an agency of the United States government. Neither the United States government nor Lawrence Livermore National Security, LLC, nor any of their employees makes any warranty, expressed or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States government or Lawrence Livermore National Security, LLC. The views and opinions of authors expressed herein do not necessarily state or reflect those of the United States government or Lawrence Livermore National Security, LLC, and shall not be used for advertising or product endorsement purposes.
Publisher Copyright:
© 2020, American Institute of Aeronautics and Astronautics Inc, AIAA. All rights reserved.
PY - 2020
Y1 - 2020
N2 - This work focuses on the development and application of high-order discretization techniques for multi-component turbulent non-equilibrium hypersonic flows. The governing equations (i.e., Navier-Stokes) are discretized in space using finite differences. High-order approximation of the inviscid flux derivatives are sought within the framework of Weighted Essentially Non-Oscillatory (WENO) schemes, with particular emphasis on minimization of dissipation and dispersion errors. Central finite differences are adopted to discretize the diffusive flux derivatives. Time-integration is performed via split/un-split Strong-Stability-Preserving schemes. The proposed numerical methods are implemented in an innovative high-performance tool, hypercode, described in a companion paper. Thermodynamic and transport properties, and source terms due to chemistry are evaluated using the plato library developed at University of Illinois. Applications consider two canonical problems: (i) Taylor-Green vortex and (ii) decay of compressible isotropic turbulence.
AB - This work focuses on the development and application of high-order discretization techniques for multi-component turbulent non-equilibrium hypersonic flows. The governing equations (i.e., Navier-Stokes) are discretized in space using finite differences. High-order approximation of the inviscid flux derivatives are sought within the framework of Weighted Essentially Non-Oscillatory (WENO) schemes, with particular emphasis on minimization of dissipation and dispersion errors. Central finite differences are adopted to discretize the diffusive flux derivatives. Time-integration is performed via split/un-split Strong-Stability-Preserving schemes. The proposed numerical methods are implemented in an innovative high-performance tool, hypercode, described in a companion paper. Thermodynamic and transport properties, and source terms due to chemistry are evaluated using the plato library developed at University of Illinois. Applications consider two canonical problems: (i) Taylor-Green vortex and (ii) decay of compressible isotropic turbulence.
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U2 - 10.2514/6.2020-2193
DO - 10.2514/6.2020-2193
M3 - Conference contribution
AN - SCOPUS:85091953203
SN - 9781624105951
T3 - AIAA Scitech 2020 Forum
BT - AIAA Scitech 2020 Forum
PB - American Institute of Aeronautics and Astronautics Inc, AIAA
T2 - AIAA Scitech Forum, 2020
Y2 - 6 January 2020 through 10 January 2020
ER -