Equation of state for solar near-surface convection
-
Published:2015-06-09
Issue:6
Volume:33
Page:703-709
-
ISSN:1432-0576
-
Container-title:Annales Geophysicae
-
language:en
-
Short-container-title:Ann. Geophys.
Author:
Vitas N.,Khomenko E.
Abstract
Abstract. 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.
Funder
Consejo Superior de Investigaciones Científicas
Publisher
Copernicus GmbH
Subject
Space and Planetary Science,Earth and Planetary Sciences (miscellaneous),Atmospheric Science,Geology,Astronomy and Astrophysics
Reference39 articles.
1. Anders, E. and Grevesse, N.: Abundances of the elements – Meteoritic and solar, Geochim. Cosmochim. Ac., 53, 197–214, 1989. 2. Asplund, M., Ludwig, H.-G., Nordlund, Å., and Stein, R. F.: The effects of numerical resolution on hydrodynamical surface convection simulations and spectral line formation, Astron. Astrophys., 359, 669–681, 2000a. 3. Asplund, M., Nordlund, Å., Trampedach, R., Allende Prieto, C., and Stein, R. F.: Line formation in solar granulation. I. Fe line shapes, shifts and asymmetries, Astron. Astrophys., 359, 729–742, 2000b. 4. Bahcall, J. N., Serenelli, A. M., and Pinsonneault, M.: How Accurately Can We Calculate the Depth of the Solar Convective Zone?, Astrophys. J., 614, 464–471, 2004. 5. Beeck, B., Collet, R., Steffen, M., Asplund, M., Cameron, R. H., Freytag, B., Hayek, W., Ludwig, H.-G., and Schüssler, M.: Simulations of the solar near-surface layers with the CO5BOLD, MURaM, and Stagger codes, Astron. Astrophys., 539, A121, https://doi.org/10.1051/0004-6361/201118252, 2012.
Cited by
5 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献
|
|