NDLI: Verification and Validation for Laminar Hypersonic Flowfields Part 1 : Verification

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Verification and Validation for Laminar Hypersonic Flowfields Part 1 : Verification

Content Provider	Semantic Scholar
Author	Roy, Christopher J. Mcwherter-Payne, Mary A. Oberkampf, William
Copyright Year	2003
Abstract	Numerical simulations are performed for Mach 8 laminar flow of a calorically perfect gas over a spherically-blunted cone. Code verification calculations are conducted to provide confidence that there are no coding mistakes and include comparisons to highly accurate inviscid benchmark solutions as well as code-to-code comparisons. Special attention is paid to the numerical accuracy of the solutions by carefully monitoring iterative convergence errors and by conducting an extensive grid convergence study. Non-monotonic convergence of the surface pressure and drag are observed with mesh refinement. The source of this non-monotonicity is explored in detail. The standard method for determining the spatial order of accuracy is shown to be inadequate for the numerical algorithm employed, and an alternative method is proposed. The overall discretization error of the fine grid surface pressure distributions is estimated to be below 0.4%, with the maximum errors found at the sphere-cone tangency point. With the accuracies demonstrated we recommend that the present computations can be used as a numerical benchmark solution for code verification. Verification and Validation for Laminar Hypersonic Flowfields Part 1: Verification Christopher J. Roy,† Mary A. McWherter-Payne,‡ and William L. Oberkampf§ Sandia National Laboratories* P. O. Box 5800 Albuquerque, NM 87185
File Format	PDF HTM / HTML
Alternate Webpage(s)	https://www.aoe.vt.edu/content/dam/aoe_vt_edu/people/webpages/cjroy/Publications-Articles/JCEAP.verification.final.pdf
Language	English
Access Restriction	Open
Subject Keyword	Adaptive mesh refinement Algorithm Behavior Benchmark (computing) Computation Computational fluid dynamics Convergence (action) Discretization error Iterative method Laboratory Nokia 5800 XpressMusic Numerical analysis Numerical linear algebra Order of accuracy Refinement (computing) Simulation Solutions Verification and validation Verification of Theories
Content Type	Text
Resource Type	Article

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