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  • RPI SCOREC - Technical Reports
    describes an abstraction of single and multiple model simulations into the individual operational components with a focus on the relationships and transformations that relate them Building on that abstraction consideration is then given to how adaptively controlled multiple model simulations can be constructed using existing simulation components interacting through functional interfaces This includes addressing how experts would provide the infrastructure with the needed components and define the relations and transformations

    Original URL path: http://www.scorec.rpi.edu/reports/view_report.php?id=463 (2015-07-15)
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  • RPI SCOREC - Technical Reports
    2 0 and a recently developed nanoclustering silica film samples with dielectric constants 2 3 and 2 0 were evaluated using an atomic force microscope based nanoindentation It was found that the Young s modulus and the hardness decrease while the fracture toughness increases with a decrease in the dielectric constant in the same type of material Moreover the Young s modulus and the hardness of the nanoclustering silica films

    Original URL path: http://www.scorec.rpi.edu/reports/view_report.php?id=499 (2015-07-15)
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  • RPI SCOREC - Technical Reports
    for interfacing to existing single scale simulation code to perform multiscale simulations on a parallel machine As a practical example we extended the large scale atomistic molecular massively parallel simulator LAMMPS atomistic simulation software to facilitate its efficient use as a component of parallel multiscale simulation software This required new library interface functions to LAMMPS that side stepped its dependence on files for input and output and provided efficient access

    Original URL path: http://www.scorec.rpi.edu/reports/view_report.php?id=505 (2015-07-15)
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  • RPI SCOREC - Technical Reports
    The transient processes of forming an air cavity around the jet capturing an initially large air bubble and the break up of this large toroidal shaped bubble into smaller bubbles were analyzed A stabilized finite element method FEM was employed under parallel numerical simulations based on adaptive unstructured grid and coupled with a level set method to track the interface between air and liquid These simulations show that the inertia

    Original URL path: http://www.scorec.rpi.edu/reports/view_report.php?id=506 (2015-07-15)
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  • RPI SCOREC - Technical Reports
    an equilibrated melt of polymers is successively doubled by affinely scaling the simulation box and adding beads along the contour of the chains At each stage of molecular weight doubling compressive deformations are produced on all length scales while the random walk nature of the polymers is preserved thereby requiring relaxation times significantly smaller than the reptation time to fully equilibrate the melt This method preserves the topological state of

    Original URL path: http://www.scorec.rpi.edu/reports/view_report.php?id=518 (2015-07-15)
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  • RPI SCOREC - Technical Reports
    p version meshes require large curved elements over the smooth portions of the domain geometrically graded curved elements to the singular edges and vertices and a controlled layer of curved prismatic elements in the thin sections This paper presents a procedure that accepts a CAD solid model as input and creates a curved mesh with the desired characteristics One key component of the procedure is the automatic identification of thin

    Original URL path: http://www.scorec.rpi.edu/reports/view_report.php?id=520 (2015-07-15)
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  • RPI SCOREC - Technical Reports
    code reuse except that implementations of these functionalities are typically tied to specific data structures In this article we describe a software component an abstract data model and programming interface designed to provide low level mesh query and manipulation support for meshing and solution algorithms The component s data model provides a data abstraction completely hiding all details of how mesh data is stored while its interface defines how applications

    Original URL path: http://www.scorec.rpi.edu/reports/view_report.php?id=521 (2015-07-15)
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  • RPI SCOREC - Technical Reports
    data portion Our target use for such a parallel I O subsystem is checkpoint restart where writing is by far the most common operation and reading typically only happens during either initialization or during a restart operation because of a system failure We compare two parallel I O strategies a synchronized parallel IO library syncIO and a reduced blocking strategy rbIO Performance tests executed on the Blue Gene P at

    Original URL path: http://www.scorec.rpi.edu/reports/view_report.php?id=522 (2015-07-15)
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