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Title: Challenges in engineering simulations of complex, turbulent flows.

Abstract

No abstract prepared.

Authors:
Publication Date:
Research Org.:
Sandia National Laboratories
Sponsoring Org.:
USDOE
OSTI Identifier:
1044985
Report Number(s):
SAND2007-2851C
TRN: US201214%%862
DOE Contract Number:
AC04-94AL85000
Resource Type:
Conference
Resource Relation:
Conference: Proposed for presentation at the Seventh Biennial Tri-Laboratory Engineering Conference held May 7-10, 2007 in Albuquerque, NM.
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; TURBULENT FLOW; ENGINEERING; SANDIA NATIONAL LABORATORIES

Citation Formats

Barone, Matthew Franklin. Challenges in engineering simulations of complex, turbulent flows.. United States: N. p., 2007. Web.
Barone, Matthew Franklin. Challenges in engineering simulations of complex, turbulent flows.. United States.
Barone, Matthew Franklin. Tue . "Challenges in engineering simulations of complex, turbulent flows.". United States. doi:.
@article{osti_1044985,
title = {Challenges in engineering simulations of complex, turbulent flows.},
author = {Barone, Matthew Franklin},
abstractNote = {No abstract prepared.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue May 01 00:00:00 EDT 2007},
month = {Tue May 01 00:00:00 EDT 2007}
}

Conference:
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  • Abstract not provided.
  • This short note discusses some of the challenges for design of suitable spatial numerical schemes for hypersonic turbulent flows, including combustion, and thermal and chemical nonequilibrium flows. Often, hypersonic turbulent flows in re-entry space vehicles and space physics involve mixed steady strong shocks and turbulence with unsteady shocklets. Material mixing in combustion poses additional computational challenges. Proper control of numerical dissipation in numerical methods beyond the standard shock-capturing dissipation at discontinuities is an essential element for accurate and stable simulations of the subject physics. On one hand, the physics of strong steady shocks and unsteady turbulence/shocklet interactions under the nonequilibriummore » environment is not well understood. On the other hand, standard and newly developed high order accurate (fourth-order or higher) schemes were developed for homogeneous hyperbolic conservation laws and mixed hyperbolic and parabolic partial differential equations (PDEs) (without source terms). The majority of finite rate chemistry and thermal nonequilibrium simulations employ methods for homogeneous time-dependent PDEs with a pointwise evaluation of the source terms. The pointwise evaluation of the source term might not be the best choice for stability, accuracy and minimization of spurious numerics for the overall scheme.« less
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