Equation of state for solar near-surface convection
Numerical 3-D radiative hydrodynamical simulations are the main tool for the analysis of the interface between the solar convection zone and the photosphere. The equation of state is one of the necessary ingredients of these simulations. We compare two equations of state that are commonly used, o...
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Series: | Annales Geophysicae |
Online Access: | https://www.ann-geophys.net/33/703/2015/angeo-33-703-2015.pdf |
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doaj-75305d6fe034411cb3271c6d71867aaa2020-11-24T23:16:15ZengCopernicus PublicationsAnnales Geophysicae0992-76891432-05762015-06-013370370910.5194/angeo-33-703-2015Equation of state for solar near-surface convectionN. Vitas0N. Vitas1E. Khomenko2E. Khomenko3E. Khomenko4Universidad de La Laguna, Dpto. Astrofísica, 38206 La Laguna, Tenerife, SpainInstituto de Astrofísica de Canarias, C/ Via Lactea S/N, 38200 La Laguna, Tenerife, SpainMain Astronomical Observatory, Academy of Sciences Ukraine, Golosiiv, Kiev 22, 252650, UkraineUniversidad de La Laguna, Dpto. Astrofísica, 38206 La Laguna, Tenerife, SpainInstituto de Astrofísica de Canarias, C/ Via Lactea S/N, 38200 La Laguna, Tenerife, SpainNumerical 3-D radiative hydrodynamical simulations are the main tool for the analysis of the interface between the solar convection zone and the photosphere. The equation of state is one of the necessary ingredients of these simulations. We compare two equations of state that are commonly used, one ideal and one nonideal, and quantify their differences. Using a numerical code we explore how these differences propagate with time in a 2-D convection simulation. We show that the runs with different equations of state (EOSs) and everything else identical relax to statistically steady states in which the mean temperature (in the range of the continuum optical depths typical for the solar photosphere) differs by less than 0.2%. For most applications this difference may be considered insignificant.https://www.ann-geophys.net/33/703/2015/angeo-33-703-2015.pdf |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
N. Vitas N. Vitas E. Khomenko E. Khomenko E. Khomenko |
spellingShingle |
N. Vitas N. Vitas E. Khomenko E. Khomenko E. Khomenko Equation of state for solar near-surface convection Annales Geophysicae |
author_facet |
N. Vitas N. Vitas E. Khomenko E. Khomenko E. Khomenko |
author_sort |
N. Vitas |
title |
Equation of state for solar near-surface convection |
title_short |
Equation of state for solar near-surface convection |
title_full |
Equation of state for solar near-surface convection |
title_fullStr |
Equation of state for solar near-surface convection |
title_full_unstemmed |
Equation of state for solar near-surface convection |
title_sort |
equation of state for solar near-surface convection |
publisher |
Copernicus Publications |
series |
Annales Geophysicae |
issn |
0992-7689 1432-0576 |
publishDate |
2015-06-01 |
description |
Numerical 3-D radiative hydrodynamical simulations are the main tool
for the analysis of the interface between the solar convection zone and the photosphere.
The equation of state is one of the necessary ingredients of these simulations.
We compare two equations of state that are commonly used, one ideal and one nonideal,
and quantify their differences.
Using a numerical code we explore how these differences propagate with time in a
2-D convection simulation.
We show that the runs with different equations of state (EOSs) and everything else identical relax to
statistically steady states in which the mean temperature (in the range of the continuum
optical depths typical for the solar photosphere) differs by less than 0.2%.
For most applications this difference may be considered insignificant. |
url |
https://www.ann-geophys.net/33/703/2015/angeo-33-703-2015.pdf |
work_keys_str_mv |
AT nvitas equationofstateforsolarnearsurfaceconvection AT nvitas equationofstateforsolarnearsurfaceconvection AT ekhomenko equationofstateforsolarnearsurfaceconvection AT ekhomenko equationofstateforsolarnearsurfaceconvection AT ekhomenko equationofstateforsolarnearsurfaceconvection |
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1725588003952263168 |