Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Graham, J. Pietarila"'
Autor:
Pietarila, A., Graham, J. Pietarila
Under the assumption that the photospheric quiet-Sun magnetic field is turbulent, the cancellation function has previously been used to estimate the true, resolution-independent mean, unsigned vertical flux $<|B_z|>_{\mathrm{true}}$. We show that the
Externí odkaz:
http://arxiv.org/abs/1209.6388
Publikováno v:
ApJ, 736, 36 (2011)
We quantify possible differences between turbulent dynamo action in the Sun and the dynamo action studied in idealized simulations. For this purpose we compare Fourier-space shell-to-shell energy transfer rates of three incrementally more complex dyn
Externí odkaz:
http://arxiv.org/abs/1105.0546
Publikováno v:
Phys. Rev. E 84, 016314 (2011)
With the help of a model of magnetohydrodynamic (MHD) turbulence tested previously, we explore high Reynolds number regimes up to equivalent resolutions of 6000^3 grid points in the absence of forcing and with no imposed uniform magnetic field. For t
Externí odkaz:
http://arxiv.org/abs/1102.5581
We present two models for turbulent flows with periodic boundary conditions and with either rotation, or a magnetic field in the magnetohydrodynamics (MHD) limit. One model, based on Lagrangian averaging, can be viewed as an invariant-preserving filt
Externí odkaz:
http://arxiv.org/abs/0904.4860
We determine how the differences in the treatment of the subfilter-scale physics affect the properties of the flow for three closely related regularizations of Navier-Stokes. The consequences on the applicability of the regularizations as SGS models
Externí odkaz:
http://arxiv.org/abs/0709.0208
We compute solutions of the Lagrangian-Averaged Navier-Stokes alpha-model (LANS) for significantly higher Reynolds numbers (up to Re 8300) than have previously been accomplished. This allows sufficient separation of scales to observe a Navier-Stokes
Externí odkaz:
http://arxiv.org/abs/0704.1928
Autor:
Norton, A. A., Graham, J. Pietarila, Ulrich, R. K., Schou, J., Tomczyk, S., Liu, Y., Lites, B. W., Ariste, A. Lopez, Bush, R. I., Socas-Navarro, H., Scherrer, P. H.
Publikováno v:
SolarPhys.239:69,2006
We present a study of two spectral lines, Fe I 6173 Angstroms and Ni I 6768 Angstroms, that were candidates to be used in the Helioseismic and Magnetic Imager (HMI) for observing Doppler velocity and the vector magnetic field. The line profiles were
Externí odkaz:
http://arxiv.org/abs/astro-ph/0608124
Publikováno v:
Phys.Fluids 18 (2006) 045106
We present an extension of the Karman-Howarth theorem to the Lagrangian averaged magnetohydrodynamic (LAMHD-alpha) equations. The scaling laws resulting as a corollary of this theorem are studied in numerical simulations, as well as the scaling of th
Externí odkaz:
http://arxiv.org/abs/physics/0508173
Akademický článek
Tento výsledek nelze pro nepřihlášené uživatele zobrazit.
K zobrazení výsledku je třeba se přihlásit.
K zobrazení výsledku je třeba se přihlásit.
Autor:
Norton, A. A., Graham, J. Pietarila, Ulrich, R. K., Schou, J., Tomczyk, S., Liu, Y., Lites, B. W., Ariste, A. López, Bush, R., Socas-Navarro, H., Scherrer, P.
Publikováno v:
Solar Physics; Dec2006, Vol. 239 Issue 1/2, p69-91, 23p, 1 Diagram, 1 Chart, 10 Graphs
