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HMX Detonation in a Tantalum Cylinder

The simulation is a simplified version of the following setup:
Principle sketch of VTF

  • AMR base mesh 60x60x120, two additional levels with factors 2, 4 to resolve detonation wave in HMX, Roe+HLL fluid solver
  • Fluid simulation uses <10M cells instead of 221M (uniform)
  • Detonation propagation in HMX
  • Coupling at level 1
  • Solid mesh 56k elements, Tantalum material model with J2 flow theory with Vinetís thermal equation of state
  • The boundary conditions on the solid are varied in the pictures below and in the attached movies
  • ~500h CPU with 14 fluid and 2 solid processes on ALC
  • Source code: [fluid codes] [solid codes]

Coupled 3 level run, exterior in part fully constrained, Pic 1Coupled 3 level run, exterior in part fully constrained, Pic 2

  • AMR levels:
    Coupled 3 level run, exterior in part fully constrained, Pic 3- AMR levels

  • Weak scalability study: fractions of time spent in different parts of the coupled applications
Solid S1 S2 S4 S3
Iterations 1080 1240 1480 1400
Processes 4 4 4 4
Elements (M) 0.443 0.443 0.443 0.443
Init 3207 3195 3188 3229
Main 4553 4446 4473 5209
ELC 7742 7398 7479 9882
Misc 491 499 589 493
Scaled 1524 1296 1092 1344

Fluid S1 S2 S4 S3
AMR Iterations 27 31 37 35
Processes 26 52 104 78
Cells (M) 6.18 9.77 16.1 13.0
Solver 1149 991 965 1109
Synchronization 7648 7320 6923 10092
GFM Overhead 678 575 547 634
CPT Algorithm 264 278 333 326
ELC 4456 4481 4558 4517
Misc 1300 1294 1367 1284
Scaled 1518 1573 1531 2085

-- RalfDeiterding - 06 Oct 2005


I Attachment sort Size Date Who Comment
canister_test1R.mpg 6881.3 K 06 Oct 2005 - 03:49 RalfDeiterding Movie of 3 level AMR run, exterior of cylinder constrained in normal direction
canister_levels.mpg 3739.4 K 06 Oct 2005 - 04:03 RalfDeiterding Movie of 3 level AMR run, exterior of cylinder constrained in normal direction, AMR levels in mid plane

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