Center for Compressible Multiphase Turbulence Table of Contents 1. Introduction ............................................................................................................................. 4 1.1 Years 1-5 Major Highlights ............................................................................................. 4 1.2 Background ...................................................................................................................... 8 1.3 Demonstration Problem.................................................................................................. 11 1.4 Simulation Roadmap ...................................................................................................... 12 1.5 Integration ...................................................................................................................... 14 2. Macroscale Team ................................................................................................................... 17 2.1 Overview ........................................................................................................................ 17 2.2 Demonstration Problem on CMT-nek ............................................................................ 17 2.3 Simulations of Eglin microscale experiments ................................................................ 21 2.4 Summary and Future Work ............................................................................................ 23 3. Microscale Team ................................................................................................................... 25 3.1 Goals and Motivation ..................................................................................................... 25 3.2 Shock interaction with random distribution of particles ................................................ 25 3.3 Developing a representative wake for force modeling................................................... 27 3.4 Shock interaction with a deformable particle ................................................................. 32 4. Experiments ........................................................................................................................... 35 4.1 ASU Experiments ........................................................................................................... 35 4.1.1 Goals and Motivation .............................................................................................. 35 4.1.2 Introduction to ASU Experiments .......................................................................... 35 4.1.3 New Equipment over 2017 ..................................................................................... 35 4.1.4 PIV Experiments ..................................................................................................... 35 4.1.5 Particle Image Velocimetry Triggered with Pressure Sensor Data ........................ 38 4.1.6 Horizontal Void Cracks .......................................................................................... 38 4.1.7 Pressure Sensor Data Examined with Differing Bed Heights ................................ 41 4.1.8 Main Shocktube Setup ............................................................................................ 43 4.2 Eglin AFB Experiments ................................................................................................. 43 4.2.1 Goals and Motivation .............................................................................................. 43 4.2.2 Microscale Experiments.......................................................................................... 43 4.2.3 Mesoscale Experiments .......................................................................................... 45 4.2.4 Macroscale Experiments ......................................................................................... 45 1 Center for Compressible Multiphase Turbulence 4.2.5 Summary ................................................................................................................. 46 5. UB Team................................................................................................................................ 47 5.1 Summary of Achievements ............................................................................................ 47 5.2 Overview ........................................................................................................................ 48 5.3 Validation, Uncertainty Quantification and Uncertainty Budget of Mesoscale Sandia Shock Tube Simulation ............................................................................................................. 48 5.4 Validation, Uncertainty Quantification and Uncertainty Budget of Eglin experiments 51 5.5 Convergence study in 1D shock-particle interaction simulation ................................... 54 5.6 Reactive burn model parameter calibration in microscale ............................................. 56 6. CMT-nek Code Development Team ..................................................................................... 60 6.1 Overview ........................................................................................................................ 60 6.2 Non-ideal equations of state and the 1-equation JWL model ........................................ 60 6.3 Solution limiting and shock capturing ........................................................................... 61 6.4 Hero runs ........................................................................................................................ 61 6.5 ASU simulations ............................................................................................................ 64 6.6 Future work in 2019 ....................................................................................................... 64 7. CS Team ................................................................................................................................ 66 7.1 Overview ........................................................................................................................ 66 7.2 Load balancing CMT-nek .............................................................................................. 66 7.2.1 Experimental Results .............................................................................................. 66 7.3 Load balancing CMT-nek (version 2) ............................................................................ 70 7.4 GPU implementation of CMT-nek ................................................................................. 72 8. Exascale Team ....................................................................................................................... 75 8.1 Overview ........................................................................................................................ 75 8.2 BE-SST and architectural exploration using BE simulation .......................................... 76 8.3 Trace-driven BE simulation of CMT-nek design space ................................................. 77 8.3.1 Particle-workload distribution tool ......................................................................... 78 8.3.2 Improvement to particle-workload distribution tool ............................................... 79 8.3.3 Application of particle-workload distribution tool ................................................. 81 8.4 FPGA-acceleration methods for rapid DSE space reduction & UQ .............................. 83 9. Deep Dives ............................................................................................................................ 86 9.1 Exascale Deep-dive ........................................................................................................ 86 9.2 Multiphase Physics Deep-dive ....................................................................................... 88 2 Center for Compressible Multiphase Turbulence 9.3 Nek5000 Users/Developers Meeting ............................................................................. 92 10. Publications ........................................................................................................................ 94 11. Conferences and Presentations ........................................................................................ 104 12. Workshops Held or Attended ........................................................................................... 113 13. Students and Staff Internships ......................................................................................... 115 13.1 Internships Completed.................................................................................................. 115 13.2 Internships Planned ...................................................................................................... 116 13.3 Internships Not Yet Planned ........................................................................................ 116 13.4 Graduated Students ...................................................................................................... 116 13.5 Students Who Will be Graduating ............................................................................... 117 13.6 Placement of Staff ........................................................................................................ 117 14. NNSA Laboratory Interactions ........................................................................................ 118