Shearing box simulations in the Rayleigh unstable regime

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

Standard

Shearing box simulations in the Rayleigh unstable regime. / Nauman, Farrukh; Blackman, Eric G.

In: Monthly Notices of the Royal Astronomical Society, Vol. 467, No. 2, 01.05.2017, p. 1652-1660.

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

Harvard

Nauman, F & Blackman, EG 2017, 'Shearing box simulations in the Rayleigh unstable regime', Monthly Notices of the Royal Astronomical Society, vol. 467, no. 2, pp. 1652-1660. https://doi.org/10.1093/mnras/stx209

APA

Nauman, F., & Blackman, E. G. (2017). Shearing box simulations in the Rayleigh unstable regime. Monthly Notices of the Royal Astronomical Society, 467(2), 1652-1660. https://doi.org/10.1093/mnras/stx209

Vancouver

Nauman F, Blackman EG. Shearing box simulations in the Rayleigh unstable regime. Monthly Notices of the Royal Astronomical Society. 2017 May 1;467(2):1652-1660. https://doi.org/10.1093/mnras/stx209

Author

Nauman, Farrukh ; Blackman, Eric G. / Shearing box simulations in the Rayleigh unstable regime. In: Monthly Notices of the Royal Astronomical Society. 2017 ; Vol. 467, No. 2. pp. 1652-1660.

Bibtex

@article{c5a8d8a8a41643fcb0e6a399ff22f075,
title = "Shearing box simulations in the Rayleigh unstable regime",
abstract = "We study the stability properties of Rayleigh unstable flows both in the purely hydrodynamic and magnetohydrodynamic (MHD) regimes for two different values of the shear $q=2.1, 4.2$ ($q = - d\ln\Omega / d\ln r$) and compare it with the Keplerian case $q=1.5$. The Rayleigh stability criterion states that hydrodynamic shear flows are stable for $q2$ regime as the volume averaged velocities ($k=0$ mode) are unstable in this regime but the advantage of using a pseudospectral code is that the $k=0$ mode is conserved. We find that the $q>2$ regime is unstable to turbulence both in the hydrodynamic and in the MHD limit (with an initially weak magnetic field). In the $q>2$ regime, the velocity fluctuations dominate the magnetic fluctuations whereas in the $q2$ regime the instability produces primarily velocity fluctuations that cause magnetic fluctuations, with the causality reversed for the $q",
keywords = "Astrophysics - Solar and Stellar Astrophysics, Physics - Plasma Physics",
author = "Farrukh Nauman and Blackman, {Eric G.}",
year = "2017",
month = may,
day = "1",
doi = "10.1093/mnras/stx209",
language = "English",
volume = "467",
pages = "1652--1660",
journal = "Royal Astronomical Society. Monthly Notices",
issn = "0035-8711",
publisher = "Oxford University Press",
number = "2",

}

RIS

TY - JOUR

T1 - Shearing box simulations in the Rayleigh unstable regime

AU - Nauman, Farrukh

AU - Blackman, Eric G.

PY - 2017/5/1

Y1 - 2017/5/1

N2 - We study the stability properties of Rayleigh unstable flows both in the purely hydrodynamic and magnetohydrodynamic (MHD) regimes for two different values of the shear $q=2.1, 4.2$ ($q = - d\ln\Omega / d\ln r$) and compare it with the Keplerian case $q=1.5$. The Rayleigh stability criterion states that hydrodynamic shear flows are stable for $q2$ regime as the volume averaged velocities ($k=0$ mode) are unstable in this regime but the advantage of using a pseudospectral code is that the $k=0$ mode is conserved. We find that the $q>2$ regime is unstable to turbulence both in the hydrodynamic and in the MHD limit (with an initially weak magnetic field). In the $q>2$ regime, the velocity fluctuations dominate the magnetic fluctuations whereas in the $q2$ regime the instability produces primarily velocity fluctuations that cause magnetic fluctuations, with the causality reversed for the $q

AB - We study the stability properties of Rayleigh unstable flows both in the purely hydrodynamic and magnetohydrodynamic (MHD) regimes for two different values of the shear $q=2.1, 4.2$ ($q = - d\ln\Omega / d\ln r$) and compare it with the Keplerian case $q=1.5$. The Rayleigh stability criterion states that hydrodynamic shear flows are stable for $q2$ regime as the volume averaged velocities ($k=0$ mode) are unstable in this regime but the advantage of using a pseudospectral code is that the $k=0$ mode is conserved. We find that the $q>2$ regime is unstable to turbulence both in the hydrodynamic and in the MHD limit (with an initially weak magnetic field). In the $q>2$ regime, the velocity fluctuations dominate the magnetic fluctuations whereas in the $q2$ regime the instability produces primarily velocity fluctuations that cause magnetic fluctuations, with the causality reversed for the $q

KW - Astrophysics - Solar and Stellar Astrophysics

KW - Physics - Plasma Physics

U2 - 10.1093/mnras/stx209

DO - 10.1093/mnras/stx209

M3 - Journal article

VL - 467

SP - 1652

EP - 1660

JO - Royal Astronomical Society. Monthly Notices

JF - Royal Astronomical Society. Monthly Notices

SN - 0035-8711

IS - 2

ER -

ID: 166633220