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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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Large-eddy simulations of the NACA23012 airfoil with laser-scanned ice shapes
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Integrating NMR, SAXS, and Atomistic Simulations: Structure and Dynamics of a Two-Domain Protein
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Atomistic-scale simulations of the chemomechanical behavior of graphene under nanoprojectile impact
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Selective removal of hydrogen sulfide from simulated biogas streams using sterically hindered amine adsorbents
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Beyond the standard two-film theory: Computational fluid dynamics simulations for carbon dioxide capture in a wetted wall column
The standard two-film theory (STFT) is a diffusion-based mechanism that can be used to describe gas mass transfer across liquid film. Fundamental assumptions of the STFT impose serious limitations on its ability to predict mass transfer coefficients. To better understand gas absorption across liquid film in practical situations, a multiphase computational fluid dynamics (CFD) model fully equipped with mass transport and chemistry capabilities has been developed for solvent-based carbon dioxide (CO2) capture to predict the CO2 mass transfer coefficient in a wetted wall column. The hydrodynamics is modeled using a volume of fluid method, and the diffusive and reactive mass transfer between the two phases is modeled by adopting a one-fluid formulation. We demonstrate that the proposed CFD model can naturally account for the influence of many important factors on the overall mass transfer that cannot be quantitatively explained by the STFT, such as the local variation in fluid velocities and properties, flow instabilities, and complex geometries. The CFD model also can predict the local mass transfer coefficient variation along the column height, which the STFT typically does not consider.
Direct numerical simulation of a high-pressure turbulent reacting temporal mixing layer
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Mesoscale simulations of radiation damage effects in Materials: A SEAKMC perspective
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