# file

HydroProductions.hppHydrodynamics (turbulent kinetic energy) production divided by the dissipation rate from DNS for the homogeneous Rayleigh-Taylor instability.

### Contents

- Reference

Hydrodynamics (turbulent kinetic energy) production divided by the dissipation rate evolutions from direct numerical simulation (DNS) of homogeneous Rayleigh-Taylor (HRT) instability. In HRT, production is P = kdot + eps, where kdot = dk/dt + eps, with k the turbulent kinetic energy and eps the dissipation rate of turbulent kinetic energy. These tables contain P/eps, a measure of the non-equilibrium nature of the turbulent flow.

The Atwood number = 0.05 data for prod_A005[HSL], corresponds to, and can be verified by,

# P/e = (kdot + eps) / eps gnuplot> d2(x,y) = ($0 == 0) ? (x1 = x, y1 = y, 1/0) : (x2 = x1, x1 = x, y2 = y1, y1 = y, (y1-y2)/(x1-x2)); dx = 0.005; plot [0.01:100] "< paste asymmetric_runs/0.05_H/M_stats/Mktaib.dat asymmetric_runs/0.05_H/M_stats/Mrhokeq.dat asymmetric_runs/0.05_H/stats/var.dat asymmetric_runs/0.05_H/stats/avg.dat asymmetric_runs/0.05_H/M_stats/Mskew.dat" u 1:((d2($1,$2)-$12/$23)/(-$12/$23)) w lp pt 7 ps 0.5 t "P/e, H, Yt=0.25", "< paste sym_runs/0.05/M_stats/Mktaib.dat sym_runs/0.05/M_stats/Mrhokeq.dat sym_runs/0.05/stats/var.dat sym_runs/0.05/stats/avg.dat sym_runs/0.05/M_stats/Mskew.dat" u 1:((d2($1,$2)-$12/$23)/(-$12/$23)) w lp pt 7 ps 0.5 t "P/e, S, Yt=0.48", "< paste asymmetric_runs/0.05_L/M_stats/Mktaib.dat asymmetric_runs/0.05_L/M_stats/Mrhokeq.dat asymmetric_runs/0.05_L/stats/var.dat asymmetric_runs/0.05_L/stats/avg.dat asymmetric_runs/0.05_L/M_stats/Mskew.dat" u 1:((d2($1,$2)-$12/$23)/(-$12/$23)) w lp pt 7 ps 0.5 t "P/e, L, Yt=0.723"

The Atwood number = 0.5 data for prod_A05[HSL], corresponds to, and can be verified by,

# P/e = (kdot + eps) / eps gnuplot> d2(x,y) = ($0 == 0) ? (x1 = x, y1 = y, 1/0) : (x2 = x1, x1 = x, y2 = y1, y1 = y, (y1-y2)/(x1-x2)); dx = 0.005; plot [0.01:30] "< paste asymmetric_runs/0.5_H/M_stats/Mktaib.dat asymmetric_runs/0.5_H/M_stats/Mrhokeq.dat asymmetric_runs/0.5_H/stats/var.dat asymmetric_runs/0.5_H/stats/avg.dat asymmetric_runs/0.5_H/M_stats/Mskew.dat" u 1:((d2($1,$2)-$12/$23)/(-$12/$23)) w lp pt 7 ps 0.5 t "P/e, H, Yt=0.1", "< paste sym_runs/0.5/M_stats/Mktaib.dat sym_runs/0.5/M_stats/Mrhokeq.dat sym_runs/0.5/stats/var.dat sym_runs/0.5/stats/avg.dat sym_runs/0.5/M_stats/Mskew.dat" u 1:((d2($1,$2)-$12/$23)/(-$12/$23)) w lp pt 7 ps 0.5 t "P/e, S, Yt=0.25", "< paste asymmetric_runs/0.5_L/M_stats/Mktaib.dat asymmetric_runs/0.5_L/M_stats/Mrhokeq.dat asymmetric_runs/0.5_L/stats/var.dat asymmetric_runs/0.5_L/stats/avg.dat asymmetric_runs/0.5_L/M_stats/Mskew.dat" u 1:((d2($1,$2)-$12/$23)/(-$12/$23)) w lp pt 7 ps 0.5 t "P/e, L, Yt=0.49"

The Atwood number = 0.75 data for prod_A075[HSL], corresponds to, and can be verified by,

# P/e = (kdot + eps) / eps gnuplot> d2(x,y) = ($0 == 0) ? (x1 = x, y1 = y, 1/0) : (x2 = x1, x1 = x, y2 = y1, y1 = y, (y1-y2)/(x1-x2)); dx = 0.005; plot [0.01:30] "< paste asymmetric_runs/0.75_H/M_stats/Mktaib.dat asymmetric_runs/0.75_H/M_stats/Mrhokeq.dat asymmetric_runs/0.75_H/stats/var.dat asymmetric_runs/0.75_H/stats/avg.dat asymmetric_runs/0.75_H/M_stats/Mskew.dat" u 1:((d2($1,$2)-$12/$23)/(-$12/$23)) w lp pt 7 ps 0.5 t "P/e, H, Yt=0.049", "< paste sym_runs/0.75/M_stats/Mktaib.dat sym_runs/0.75/M_stats/Mrhokeq.dat sym_runs/0.75/stats/var.dat sym_runs/0.75/stats/avg.dat sym_runs/0.75/M_stats/Mskew.dat" u 1:((d2($1,$2)-$12/$23)/(-$12/$23)) w lp pt 7 ps 0.5 t "P/e, S, Yt=0.127", "< paste asymmetric_runs/0.75_L/M_stats/Mktaib.dat asymmetric_runs/0.75_L/M_stats/Mrhokeq.dat asymmetric_runs/0.75_L/stats/var.dat asymmetric_runs/0.75_L/stats/avg.dat asymmetric_runs/0.75_L/M_stats/Mskew.dat" u 1:((d2($1,$2)-$12/$23)/(-$12/$23)) w lp pt 7 ps 0.5 t "P/e, L, Yt=0.291"

## Namespaces

- namespace walker
- Walker declarations and definitions.