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Results for “SIMULATOR”
Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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Direct comparison of microstructure-sensitive fatigue crack initiation via crystal plasticity simulations and in situ high-energy X-ray experiments
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Heat transfer simulations of the UO2 particle–graphite system in TREAT fuel
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Benchmark exercise for fluid flow simulations in a liquid metal fast reactor fuel assembly
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Comparison of Darcy's law and invasion percolation simulations with buoyancy-driven CO2-brine multiphase flow in a heterogeneous sandstone core
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Predictive nuclear power plant outage control through computer vision and data-driven simulation
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A study of propagation of spherically expanding and counterflow laminar flames using direct measurements and numerical simulations
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Direct numerical simulations of probe effects in low-pressure flame sampling
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Large-eddy simulation of ash deposition in a large-scale laboratory furnace
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Capturing differential diffusion effects in large eddy simulation of turbulent premixed flames
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Parallel performance optimizations on unstructured mesh-based simulations
This paper addresses two key parallelization challenges the unstructured mesh-based ocean modeling code, MPAS-Ocean, which uses a mesh based on Voronoi tessellations: (1) load imbalance across processes, and (2) unstructured data access patterns, that inhibit intra- and inter-node performance. Our work analyzes the load imbalance due to naive partitioning of the mesh, and develops methods to generate mesh partitioning with better load balance and reduced communication. Furthermore, we present methods that minimize both inter- and intranode data movement and maximize data reuse. Our techniques include predictive ordering of data elements for higher cache efficiency, as well as communication reduction approaches. We present detailed performance data when running on thousands of cores using the Cray XC30 supercomputer and show that our optimization strategies can exceed the original performance by over 2×. Additionally, many of these solutions can be broadly applied to a wide variety of unstructured grid-based computations.
Efficient workflow for simulation of multifractured enhanced geothermal systems (EGS)
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