SIGHT
Supersonic Isothermal self-Gravitating Hydrodynamic Turbulence |
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Method: PPMDE; Resolution: 64^3, 128^3, 256^3, 512^3, 1024^3; &gamma = 1.001; Mach = 6; Units: L = 1, M = 1, c = 1; Forcing: solenoidal field, k=1-2, fixed pattern; |
Density cube (log, 512^3) | MPEG: 1.3M | |||||
Density thick slice (log, 512^3) | MPEG: 2M | |||||
Density thick slice (log, 512^3, 100 zones deep) | MPEG: 4.5M AVI: 2.2M | |||||
Density slice (log, 512^3, time labeled in dynamical time units, 0 < t < 2.4) | MPEG: 1.2M
GIF: 5M | |||||
Density slices: structurally "rich", "intermediate", and "poor" (log, 1024^3, t=0.5) | JPEG
JPEG JPEG | |||||
Thin and thick slices of div(v) and curl(v) (1024^3, t=0.5) | log curl
arcsinh curl div arcsinh div arcsinh div div movie static 26MB div movie evolution 31MB | |||||
Volumetric rendering of curl(v) (1024^3, t=0.8) | arcsinh curl
fig 1 fig 2 fig 3 fig 4 | |||||
Density PDF (512^3, time labeled in dynamical time units, 0 < t < 2.4) | MPEG: 1.6M | |||||
Density PDF (256^3 - 1024^3, t = 0.5) | PS | |||||
Density power spectrum (512^3, time labeled in dynamical time units, 0 < t < 2.4) | MPEG: 1.5M | |||||
Density power spectrum (256^3 - 1024^3, t = 0.5) | PS | |||||
Velocity power spectrum (256^3 - 1024^3, t = 0.5) | PS | |||||
Density slice. Compares methods with different diffusivities: PPM core, PPM with flattening from CW84 A.7-A.10, PPM with flattening and diffusion CW84 A.3 (K=0.1), PPM with flattening and diffusion (K=0.2), ZEUS with C1 =0 C2 = 2, ZEUS with C1 =1 C2 = 1, and Godunov; (256^3; 0 < t < 0.3 in code units; new initial conditions) | MPEG: 5.7M | |||||
PPM versus ZEUS (Density slices from PPM 256^3, 512^3, and ZEUS 1024^3 simulations at t=0.5) | ||||||
Density max/min | PS | |||||
Density, rms | PS | |||||
Kinetic energy | PS | |||||
Mach number (rms, mass weighted) | PS | |||||
Mach number (rms, volume weighted) | PS | |||||
Velocity, rms | PS |
Method: PPMDE; Base grid: 256^3; AMR: 1 level by 4 is allowed starting from t=0.4, refinement on shocks and shear; Effective resolution: 1024^3; Number of active zones: ~0.74 10^9; &gamma = 1.001; Mach = 6; Units: L = 1, M = 1, c = 1; Dynamical time: t_dyn = 0.083; Forcing: solenoidal field, k=1-2, fixed pattern; |
Projected Gas Density (log, effective resolution 1024^2, t=0.439) | X-projection
Y-projection Z-projection | |||||
Projected Gas Density (log, effective resolution 1024^2, t=0.501) | X-projection
Y-projection Z-projection | |||||
Gas Density Evolution Movies (log density; X-projection; full box, "thick" slice - 100 zones accross, "thin" slice - 1 zone; t=0.400->0.490) |
1024 box
1024 thick 1024 thin 640 box 640 thick 640 thin | |||||
Density Cube Movie: Rotation & Close-up (log density; t=0.5) | MPEG: 25M | |||||
Density Cube Movie: Rotation, Close-up, & Strip-off (log density; t=0.5) | MPEG: 32M | |||||
Projected density power spectrum (t=0.439) | PS | |||||
Density PDF (t=0.5) | PS MPEG | |||||
Density power spectrum (t=0.5) | PS MPEG | |||||
Velocity power spectrum (t=0.5) | PS MPEG | |||||
A thin slice through the density cube with boundaries for the first level subgrids (t=0.5) | JPEG/EPS | |||||
A projection through the density cube (t=0.5) | JPEG | |||||
Thick slices through the density cube (t=0.5, 150 zones deep) | JPEG JPEG JPEG | |||||
CASS Journal Club talk (revisited) | ||||||
AAS205 Poster in PostScript format | Letter Poster | |||||
Preprint | astro-ph/0411626 | |||||
Talk at CMSO Workshop, June 2005, Madison, WI |
Method: PPMDE; Base grid: 512^3; AMR: 5 levels by 4, refinement based on Truelove et al. (1997) condition; Effective resolution: 2 a.u.; Dynamic range: 5 10^5; &gamma = 1.001; Mach = 6; Units: L = 5pc, time = 27 Myr, m = 3,460 M_sol, c = 184 m/s, density 500 cm-3; Forcing: NONE; |
Projected Gas Density (log, based on data with effective resolution 2048^3, RUN2: t=0.426) | X-projection Y-projection Z-projection | |||||
Projected Gas Density: zoom-in on dense filaments (log, based on data with effective resolution 8192^3, RUN2: t=0.426) | Z-zoomin Z-zoom-smooth Z-zoom-with-grids | |||||
Peakfinder results based on RUN2: number of density peaks as a function of... | time separation max density | |||||
Projected Gas Density (log, based on data with effective resolution 2048^3, RUN1: t=0.42466) | X-projection Y-projection Z-projection | |||||
A gallery of images for cores from RUN1 at t=0.4213 | HTML/PS/EPS | |||||
Core morphology as a function of density (RUN1 t=0.4228) | HTML | |||||
Hierarchical merging of protostellar disks: a movie from RUN1 | MPEG | |||||
Cores #10, #11 from RUN1; a hierarchy of Z-projections at t=0.4228 | PS/EPS | |||||
Paolo's Volterra workshop talk | ||||||
Poster presented at Protostars and Planets V, Oct. 2005, Waikoloa Village, The Big Island, HI | Letter Poster |
akritsuk@ucsd.edu Last modified: Mon Aug 3 12:10:39 PST 2009 |