A Facility for Simulating the Dynamic Response of Materials

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A Facility for Simulating the Dynamic Response of
Materials

• Steering Committee Meeting
• Wednesday, April 12, 2000

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VTF Software architecture
Python scripting layer
Materials properties
Solid Mechanics
Solid-fluid coupling
CFD solvers
Adaptive Mesh Refinement
Parallel adaptive meshing
MPI
Scalable I/O
Nexus/Globus
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Overview of virtual facility (VTF)

• Python scripting interface drives all simulations
• Computational Engines
• CFD (Eulerian)
• High explosives
• Compressible turbulence
• Solid mechanics (Lagrangian)
• Fluid-solid coupling
• Materials properties database
• Facilities for high performance computing
• Facilities for visualization, I/O etc.

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Status of VTF as of 10/99

• Integrated Simulations
• coupled simulation of HE fluid dynamics with
  Lagrangian solid dynamics
• serial CFD
• serial solid dynamics
• achieved via 2-D research code
• coupled simulation of strongly compressible
  perfect gas CFD with Lagrangian solid dynamics
• parallel CFD
• serial solid dynamics
• VTF software architecture implemented
• MPI aware Python interpreter

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CFD solver

• Solves Euler equations
• perfect gas
• 2-D, axisymmetric or 3-D
• variety of advection schemes
• Eulerian formulation
• Parallel Implementation
• MPI based
• Implemented on variety of platforms
• Cray T3E
• ASCI Blue Mountain
• ASCI Blue Pacific
• Linux Beowulf

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Results of site review 10/5/99

• Overall the center is making excellent progress
• research is well focused
• appropriate levels of technical depth and breadth
  by researchers
• good interdisciplinary collaborations
• research goals and milestones are in general
  being met
• interactions with DP lab personnel are positive
• Recommendations
• roadmaps should contain risk assessment
• provide clear vision of software architecture
• Computational science still an issue
• at present will not satisfy ASCI goals

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What we will have by years end

• Integrated Simulations
• 3-D fully coupled simulations of HE detonation
  impinging on solid targets
• parallel 3-D Lagrangian solid mechanics
• parallel multi species CFD with adaptive mesh
  refinement
• fully functional problem solving environment
• materials properties database
• Supported code base

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VTF capability combinatorics
eulerian
lagrangian
coupled
2D
axisymmetric
3D
serial
parallel
no AMR
AMR
stand alone
Pyre
Globus
Visualization
SIO
UMP
Constitutive models
Geometrical configurations
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VTF capabilities at the end of FY1999
eulerian
lagrangian
coupled
2D
axisymmetric
3D
serial
parallel
no AMR
AMR
stand alone
Pyre
Globus
Visualization
SIO
UMP
Constitutive models
Geometrical configurations
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Status at the half-way mark for FY 00

• CFD solver
• integration of AMR in 2-D
• integration of HE engineering model in parallel
• demonstration of coupling in 3-d with spring
  solver
• integration with CPT algorithm in 3-D
• integration with adlib (in progress)
• Solid dynamics solver
• parallel meshing
• parallel mechanics
• parallel contact (in progress)
• interface with 3-D CPT algorithm
• integration with RM3D (in progress)

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What is left to complete?

• Full parallel coupling of adlib and RM3d
• adlib and CFD run in separate parallel process
  spaces
• solid boundary broadcast to all processes
• parallel CPT algorithm used to compute level set
• Integration into Pyre
• We are a few weeks away from achieving this
• Computational science goals
• Integration with Globus
• Visualization
• Scalable I/O
• Scalability on ASCI platforms

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The deliverable for FY2000
eulerian
lagrangian
coupled
2D
axisymmetric
3D
serial
parallel
no AMR
AMR
stand alone
Pyre
Globus
Visualization
SIO
UMP
Constitutive models
Geometrical configurations
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Implementation plan milestones for FY2000
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Revised milestones for FY2000
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Milestone status
Pyre
2D
coupled
engineering HE model
parallel
1Q00

• Engineering model incorporated into CFD code
• adlib has been made parallel
• Milestone redefined and pushed to 3rd quarter
• Folded into 3rd quarter milestone and extended
  to 3-D

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Milestone status
Pyre
3D
lagrangian
engineering HE model
parallel
Ta
2Q00

• All simulation capabilities in place
• Awaiting completion of full adlib scripting into
  Pyre
• Expect completion by middle of Q3 00

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Milestone status for FY2000
noPyre
3D
eulerian
engineering HE model
parallel
AMR
3Q00

• GrACE used to enable AMR capability in 2-d CFD
  solver
• HE model solver
• Perfect gas
• Scalability studies are in progress (S. Brunett)
• Milestone is on schedule

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Milestone status for FY2000

• Awaiting full scripting capability for adlib
• Awaiting completion of interface to uniform
  materials properties database

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Milestone status for FY2000

• Requires interaction with CS group to finalize
  interfaces for SIO and VIZ
• Expect completion on schedule

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Milestone status for FY2000

• Requires interaction with CS group to finalize
  interfaces for SIO and VIZ
• Expect completion on schedule

21
Milestone status for FY2000

• LES capability has been formulated
• ENO/WENO solver completed
• Milestone is on schedule