On validating an astrophysical simulation code

A. C. Calder, B. Fryxell, T. Plewa, R. Rosner, L. J. Dursi, V. G. Weirs, T. Dupont, H. F. Robey, J. O. Kane, B. A. Remington, R. P. Drake, G. Dimonte, M. Zingale, Francis Timmes, K. Olson, P. Ricker, P. Macneice, H. M. Tufo

Research output: Contribution to journalArticle

158 Citations (Scopus)

Abstract

We present a case study of validating an astrophysical simulation code. Our study focuses on validating FLASH, a parallel, adaptive-mesh hydrodynamics code for studying the compressible, reactive flows found in many astrophysical environments. We describe the astrophysics problems of interest and the challenges associated with simulating these problems. We describe methodology and discuss solutions to difficulties encountered in verification and validation. We describe verification tests regularly administered to the code, present the results of new verification tests, and outline a method for testing general equations of state. We present the results of two validation tests in which we compared simulations to experimental data. The first is of a laser-driven shock propagating through a multilayer target, a configuration subject to both Rayleigh-Taylor and Richtmyer-Meshkov instabilities. The second test is a classic Rayleigh-Taylor instability, where a heavy fluid is supported against the force of gravity by a light fluid. Our simulations of the multilayer target experiments showed good agreement with the experimental results, but our simulations of the Rayleigh-Taylor instability did not agree well with the experimental results. We discuss our findings and present results of additional simulations undertaken to further investigate the Rayleigh-Taylor instability.

Original languageEnglish (US)
Pages (from-to)201-229
Number of pages29
JournalAstrophysical Journal, Supplement Series
Volume143
Issue number1
DOIs
StatePublished - Nov 2002
Externally publishedYes

Fingerprint

astrophysics
Taylor instability
simulation
fluid
fluids
equation of state
mesh
equations of state
laser
hydrodynamics
shock
code
methodology
gravity
gravitation
test
configurations
lasers
experiment

Keywords

  • Hydrodynamics
  • Instabilities
  • Methods: numerical
  • Shock waves

ASJC Scopus subject areas

  • Space and Planetary Science

Cite this

Calder, A. C., Fryxell, B., Plewa, T., Rosner, R., Dursi, L. J., Weirs, V. G., ... Tufo, H. M. (2002). On validating an astrophysical simulation code. Astrophysical Journal, Supplement Series, 143(1), 201-229. https://doi.org/10.1086/342267

On validating an astrophysical simulation code. / Calder, A. C.; Fryxell, B.; Plewa, T.; Rosner, R.; Dursi, L. J.; Weirs, V. G.; Dupont, T.; Robey, H. F.; Kane, J. O.; Remington, B. A.; Drake, R. P.; Dimonte, G.; Zingale, M.; Timmes, Francis; Olson, K.; Ricker, P.; Macneice, P.; Tufo, H. M.

In: Astrophysical Journal, Supplement Series, Vol. 143, No. 1, 11.2002, p. 201-229.

Research output: Contribution to journalArticle

Calder, AC, Fryxell, B, Plewa, T, Rosner, R, Dursi, LJ, Weirs, VG, Dupont, T, Robey, HF, Kane, JO, Remington, BA, Drake, RP, Dimonte, G, Zingale, M, Timmes, F, Olson, K, Ricker, P, Macneice, P & Tufo, HM 2002, 'On validating an astrophysical simulation code', Astrophysical Journal, Supplement Series, vol. 143, no. 1, pp. 201-229. https://doi.org/10.1086/342267
Calder AC, Fryxell B, Plewa T, Rosner R, Dursi LJ, Weirs VG et al. On validating an astrophysical simulation code. Astrophysical Journal, Supplement Series. 2002 Nov;143(1):201-229. https://doi.org/10.1086/342267
Calder, A. C. ; Fryxell, B. ; Plewa, T. ; Rosner, R. ; Dursi, L. J. ; Weirs, V. G. ; Dupont, T. ; Robey, H. F. ; Kane, J. O. ; Remington, B. A. ; Drake, R. P. ; Dimonte, G. ; Zingale, M. ; Timmes, Francis ; Olson, K. ; Ricker, P. ; Macneice, P. ; Tufo, H. M. / On validating an astrophysical simulation code. In: Astrophysical Journal, Supplement Series. 2002 ; Vol. 143, No. 1. pp. 201-229.
@article{2d13937120a94fb79f87941d5a7c3426,
title = "On validating an astrophysical simulation code",
abstract = "We present a case study of validating an astrophysical simulation code. Our study focuses on validating FLASH, a parallel, adaptive-mesh hydrodynamics code for studying the compressible, reactive flows found in many astrophysical environments. We describe the astrophysics problems of interest and the challenges associated with simulating these problems. We describe methodology and discuss solutions to difficulties encountered in verification and validation. We describe verification tests regularly administered to the code, present the results of new verification tests, and outline a method for testing general equations of state. We present the results of two validation tests in which we compared simulations to experimental data. The first is of a laser-driven shock propagating through a multilayer target, a configuration subject to both Rayleigh-Taylor and Richtmyer-Meshkov instabilities. The second test is a classic Rayleigh-Taylor instability, where a heavy fluid is supported against the force of gravity by a light fluid. Our simulations of the multilayer target experiments showed good agreement with the experimental results, but our simulations of the Rayleigh-Taylor instability did not agree well with the experimental results. We discuss our findings and present results of additional simulations undertaken to further investigate the Rayleigh-Taylor instability.",
keywords = "Hydrodynamics, Instabilities, Methods: numerical, Shock waves",
author = "Calder, {A. C.} and B. Fryxell and T. Plewa and R. Rosner and Dursi, {L. J.} and Weirs, {V. G.} and T. Dupont and Robey, {H. F.} and Kane, {J. O.} and Remington, {B. A.} and Drake, {R. P.} and G. Dimonte and M. Zingale and Francis Timmes and K. Olson and P. Ricker and P. Macneice and Tufo, {H. M.}",
year = "2002",
month = "11",
doi = "10.1086/342267",
language = "English (US)",
volume = "143",
pages = "201--229",
journal = "Astrophysical Journal, Supplement Series",
issn = "0067-0049",
publisher = "IOP Publishing Ltd.",
number = "1",

}

TY - JOUR

T1 - On validating an astrophysical simulation code

AU - Calder, A. C.

AU - Fryxell, B.

AU - Plewa, T.

AU - Rosner, R.

AU - Dursi, L. J.

AU - Weirs, V. G.

AU - Dupont, T.

AU - Robey, H. F.

AU - Kane, J. O.

AU - Remington, B. A.

AU - Drake, R. P.

AU - Dimonte, G.

AU - Zingale, M.

AU - Timmes, Francis

AU - Olson, K.

AU - Ricker, P.

AU - Macneice, P.

AU - Tufo, H. M.

PY - 2002/11

Y1 - 2002/11

N2 - We present a case study of validating an astrophysical simulation code. Our study focuses on validating FLASH, a parallel, adaptive-mesh hydrodynamics code for studying the compressible, reactive flows found in many astrophysical environments. We describe the astrophysics problems of interest and the challenges associated with simulating these problems. We describe methodology and discuss solutions to difficulties encountered in verification and validation. We describe verification tests regularly administered to the code, present the results of new verification tests, and outline a method for testing general equations of state. We present the results of two validation tests in which we compared simulations to experimental data. The first is of a laser-driven shock propagating through a multilayer target, a configuration subject to both Rayleigh-Taylor and Richtmyer-Meshkov instabilities. The second test is a classic Rayleigh-Taylor instability, where a heavy fluid is supported against the force of gravity by a light fluid. Our simulations of the multilayer target experiments showed good agreement with the experimental results, but our simulations of the Rayleigh-Taylor instability did not agree well with the experimental results. We discuss our findings and present results of additional simulations undertaken to further investigate the Rayleigh-Taylor instability.

AB - We present a case study of validating an astrophysical simulation code. Our study focuses on validating FLASH, a parallel, adaptive-mesh hydrodynamics code for studying the compressible, reactive flows found in many astrophysical environments. We describe the astrophysics problems of interest and the challenges associated with simulating these problems. We describe methodology and discuss solutions to difficulties encountered in verification and validation. We describe verification tests regularly administered to the code, present the results of new verification tests, and outline a method for testing general equations of state. We present the results of two validation tests in which we compared simulations to experimental data. The first is of a laser-driven shock propagating through a multilayer target, a configuration subject to both Rayleigh-Taylor and Richtmyer-Meshkov instabilities. The second test is a classic Rayleigh-Taylor instability, where a heavy fluid is supported against the force of gravity by a light fluid. Our simulations of the multilayer target experiments showed good agreement with the experimental results, but our simulations of the Rayleigh-Taylor instability did not agree well with the experimental results. We discuss our findings and present results of additional simulations undertaken to further investigate the Rayleigh-Taylor instability.

KW - Hydrodynamics

KW - Instabilities

KW - Methods: numerical

KW - Shock waves

UR - http://www.scopus.com/inward/record.url?scp=0141838048&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0141838048&partnerID=8YFLogxK

U2 - 10.1086/342267

DO - 10.1086/342267

M3 - Article

VL - 143

SP - 201

EP - 229

JO - Astrophysical Journal, Supplement Series

JF - Astrophysical Journal, Supplement Series

SN - 0067-0049

IS - 1

ER -