NUMERICALLY DETERMINED TRANSPORT LAWS FOR FINGERING (“THERMOHALINE”) CONVECTION IN ASTROPHYSICS

Research output: Contribution to journal › Journal article › Research › peer-review

Standard

NUMERICALLY DETERMINED TRANSPORT LAWS FOR FINGERING (“THERMOHALINE”) CONVECTION IN ASTROPHYSICS. / Traxler, A.; Garaud, P.; Stellmach, S.

In: The Astrophysical Journal, Vol. 728, L29, 2011.

Research output: Contribution to journal › Journal article › Research › peer-review

Harvard

Traxler, A, Garaud, P & Stellmach, S 2011, 'NUMERICALLY DETERMINED TRANSPORT LAWS FOR FINGERING (“THERMOHALINE”) CONVECTION IN ASTROPHYSICS', The Astrophysical Journal, vol. 728, L29. https://doi.org/10.1088/2041-8205/728/2/l29

APA

Traxler, A., Garaud, P., & Stellmach, S. (2011). NUMERICALLY DETERMINED TRANSPORT LAWS FOR FINGERING (“THERMOHALINE”) CONVECTION IN ASTROPHYSICS. The Astrophysical Journal, 728, [L29]. https://doi.org/10.1088/2041-8205/728/2/l29

Vancouver

Traxler A, Garaud P, Stellmach S. NUMERICALLY DETERMINED TRANSPORT LAWS FOR FINGERING (“THERMOHALINE”) CONVECTION IN ASTROPHYSICS. The Astrophysical Journal. 2011;728. L29. https://doi.org/10.1088/2041-8205/728/2/l29

Author

Traxler, A. ; Garaud, P. ; Stellmach, S. / NUMERICALLY DETERMINED TRANSPORT LAWS FOR FINGERING (“THERMOHALINE”) CONVECTION IN ASTROPHYSICS. In: The Astrophysical Journal. 2011 ; Vol. 728.

Bibtex

@article{582667c159804e91891673b731c9392c,
title = "NUMERICALLY DETERMINED TRANSPORT LAWS FOR FINGERING (“THERMOHALINE”) CONVECTION IN ASTROPHYSICS",
abstract = "We present the first three-dimensional simulations of fingering convection performed at parameter values approaching those relevant for astrophysics. Our simulations reveal the existence of simple asymptotic scaling laws for turbulent heat and compositional transport, which can be straightforwardly extrapolated from our numerically tractable values to the true astrophysical regime. Our investigation also indicates that thermo-compositional {"}staircases,{"} a key consequence of fingering convection in the ocean, cannot form spontaneously in the fingering regime in stellar interiors. Our proposed empirically determined transport laws thus provide simple prescriptions for mixing by fingering convection in a variety of astrophysical situations, and should, from here on, be used preferentially over older and less accurate parameterizations. They also establish that fingering convection does not provide sufficient extra-mixing to explain observed chemical abundances in red giant branch stars.",
author = "A. Traxler and P. Garaud and S. Stellmach",
year = "2011",
doi = "10.1088/2041-8205/728/2/l29",
language = "English",
volume = "728",
journal = "Astrophysical Journal",
issn = "0004-637X",
publisher = "Institute of Physics Publishing, Inc",

}

RIS

TY - JOUR

T1 - NUMERICALLY DETERMINED TRANSPORT LAWS FOR FINGERING (“THERMOHALINE”) CONVECTION IN ASTROPHYSICS

AU - Traxler, A.

AU - Garaud, P.

AU - Stellmach, S.

PY - 2011

Y1 - 2011

N2 - We present the first three-dimensional simulations of fingering convection performed at parameter values approaching those relevant for astrophysics. Our simulations reveal the existence of simple asymptotic scaling laws for turbulent heat and compositional transport, which can be straightforwardly extrapolated from our numerically tractable values to the true astrophysical regime. Our investigation also indicates that thermo-compositional "staircases," a key consequence of fingering convection in the ocean, cannot form spontaneously in the fingering regime in stellar interiors. Our proposed empirically determined transport laws thus provide simple prescriptions for mixing by fingering convection in a variety of astrophysical situations, and should, from here on, be used preferentially over older and less accurate parameterizations. They also establish that fingering convection does not provide sufficient extra-mixing to explain observed chemical abundances in red giant branch stars.

AB - We present the first three-dimensional simulations of fingering convection performed at parameter values approaching those relevant for astrophysics. Our simulations reveal the existence of simple asymptotic scaling laws for turbulent heat and compositional transport, which can be straightforwardly extrapolated from our numerically tractable values to the true astrophysical regime. Our investigation also indicates that thermo-compositional "staircases," a key consequence of fingering convection in the ocean, cannot form spontaneously in the fingering regime in stellar interiors. Our proposed empirically determined transport laws thus provide simple prescriptions for mixing by fingering convection in a variety of astrophysical situations, and should, from here on, be used preferentially over older and less accurate parameterizations. They also establish that fingering convection does not provide sufficient extra-mixing to explain observed chemical abundances in red giant branch stars.

U2 - 10.1088/2041-8205/728/2/l29

DO - 10.1088/2041-8205/728/2/l29

M3 - Journal article

VL - 728

JO - Astrophysical Journal

JF - Astrophysical Journal

SN - 0004-637X

M1 - L29

ER -

ID: 336753215