SEARCH · Search NASA
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.
Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.
Multi-scale simulation of structural heterogeneity of swift-heavy ion tracks in complex oxides
Explore the source record for details and available documents.
Monte Carlo simulation of phonon transport in UO 2 single crystals
Explore the source record for details and available documents.
Comparison of molecular dynamics simulation methods for the study of grain boundary migration
Explore the source record for details and available documents.
Grouping techniques for large-scale cluster dynamics simulations of reaction diffusion processes
Not provided.
A new paradigm for petascale Monte Carlo simulation: Replica exchange Wang-Landau sampling
We introduce a generic, parallel Wang-Landau method that is naturally suited to implementation on massively parallel, petaflop supercomputers. The approach introduces a replica-exchange framework in which densities of states for overlapping sub-windows in energy space are determined iteratively by traditional Wang-Landau sampling. The advantages and general applicability of the method are demonstrated for several distinct systems that possess discrete or continuous degrees of freedom, including those with complex free energy landscapes and topological constraints.
Spatiotemporal Patterns of Evapotranspiration in Response to Multiple Environmental Factors Simulated by the Community Land Model
Spatiotemporal patterns of evapotranspiration (ET) over the period from 1982 to 2008 are investigated and attributed to multiple environmental factors using the Community Land Model version 4 (CLM4). Our results show that CLM4 captures the spatial distribution and interannual variability of ET well when compared to observation-based estimates. We find that climate dominates the predicted variability in ET. Elevated atmospheric CO2 concentration also plays an important role in modulating the trend of predicted ET over most land areas, and replaces climate to function as the dominant factor controlling ET changes over the North America, South America and Asia regions. Compared to the effect of climate and CO2 concentration, the roles of other factors such as nitrogen deposition, land use change and aerosol deposition are less pronounced and regionally dependent. The aerosol deposition contribution is the third most important factor for trends of ET over Europe, while it has the smallest impact over other regions. As ET is a dominant component of the terrestrial water cycle, our results suggest that environmental factors like elevated CO2, nitrogen and aerosol depositions, and land use change, in addition to climate, could have significant impact on future projections of water resources and water cycle dynamics at global and regional scales.
Lattice Boltzmann accelerated direct simulation Monte Carlo for dilute gas flow simulations
Not provided.
Self-consistent simulations and analysis of the coupled-bunch instability for arbitrary multibunch configurations
Not Available
Elastic anisotropy of shocked aluminum single crystals: Use of molecular dynamics simulations
Not Available
Analysis of nonlocal phonon thermal conductivity simulations showing the ballistic to diffusive crossover
Not Available
Refined description of liquid and supercooled silicon from ab initio simulations
Not Available
Understanding and revisiting the most complex perovskite system via atomistic simulations
Not Available
Determining transport coefficients for a microscopic simulation of a hadron gas
Not Available