Data for "Comparison of forcing functions in magnetohydrodynamics"
Mairi E. McKay, Moritz F. Linkmann, Daniel Clark, Adam A. Chalupa, Arjun Berera
13th April 2017
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Fig. 1: time evolution of magnetic and kinetic energy
Files:
AHFf.stats.txt
u_rms=sqrt(0.667*0.395732), L=1.27034
NDf.stats.txt
u_rms=sqrt(0.667*0.429738), L=1.52126
SFf.stats.txt
u_rms=sqrt(0.667*0.576634), L=1.75356
AHFa.stats.txt
u_rms=sqrt(0.667*0.361039), L=1.20984
NDa.stats.txt
u_rms=sqrt(0.667*0.39335), L=1.55151
SFa.stats.txt
u_rms=sqrt(0.667*0.442751), L=1.75307
column 1: time, column 2: magnetic energy, column 3: kinetic energy
time normalised by time-averaged large eddy turnover time u_rms/L,
calculated from time-averaged kinetic energy and length scale (column 17).
averaged between t=20 and t=100.
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Fig. 2: visualisation of magnetic and velocity fields
Files:
AHFa_vis_b.vtr
NDa_vis_b.vtr
SFa_vis_b.vtr
AHFa_vis_u.vtr
NDa_vis_u.vtr
SFa_vis_u.vtr
can be opened using Paraview
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Fig. 3: time-averaged energy spectra
Files:
AHFf_u.spc.txt
AHFf_b.spc.txt
NDf_u.spc.txt
NDf_b.spc.txt
SFf_u.spc.txt
SFf_b.spc.txt
AHFa_u.spc.txt
AHFa_b.spc.txt
NDa_u.spc.txt
NDa_b.spc.txt
SFa_u.spc.txt
SFa_b.spc.txt
column 1: wavenumber, column 2: energy
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Fig. 4: time-averaged cross helicity spectra
Files:
same as Fig. 3.
column 6 of b_spc: cross helicity
normalised by the square root of (4*kinetic energy (column 2 of u_spc)*
magnetic energy (column 2 of b_spc))
ie sqrt(4*E_u*E_b)
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Fig. 5: time-averaged energy and dissipation fractions
File:
fractions.txt
column 1(4): Re_Taylor, 2(5): epsilon_b/epsilon, 3(6): E_b/E
bracketed numbers correspond to the errors
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Fig. 6: normalised cross helicity versus E_b/E
Files:
all files contained in 128_stats/
normalised cross helicity: CH/sqrt(4*E_u*E_b)
magnetic energy fraction: E_b/(E_u+E_b)
column 2: E_b, column 3: E_u, column 6: CH
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