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  • RPI SCOREC - Technical Reports
    Journal Proceedings of the NAFEMS World Congress 2011 Abstract Consideration is given to the issues associated with increasing the ability of industry to perform complex simulations using adaptive analysis tools operating on massively parallel computers After a brief review of some activities underway supporting the ability of industry to apply massively parallel computing the key components of parallel mesh generation and mesh adaptation tools that operate directly with CAD representations

    Original URL path: http://www.scorec.rpi.edu/reports/view_report.php?id=526 (2015-07-15)
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  • RPI SCOREC - Technical Reports
    silicon substrate are used to investigate the effect of microstructure on thermal stress variability In the X ray microbeam study the grain orientations and deviatoric elastic strain field are measured at the subgrain level in the film during and after two thermal cycles A finite element model of the observed grain structure is created and modeled with an elastoviscoplastic crystal constitutive model that incorporates film thickness and grain size effects

    Original URL path: http://www.scorec.rpi.edu/reports/view_report.php?id=533 (2015-07-15)
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  • RPI SCOREC - Technical Reports
    in displacement estimation from ultrasound image sequences We discuss cross correlation approaches regularized optimization approaches guided search methods multiscale methods and hybrid methods Current implementations can return results of high accuracy in both axial and lateral directions at several frames per second We compare several strain estimators Again we see a benefit from a regularized optimization approach We then discuss both direct and iterative methods to reconstruct tissue mechanical property

    Original URL path: http://www.scorec.rpi.edu/reports/view_report.php?id=539 (2015-07-15)
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  • RPI SCOREC - Technical Reports
    model that can predict the rate and location of air entrainment for a wide range of ows In this study we derive a sub grid model and implement it in a computational multiphase uid dynamics CMFD framework to solve the Reynolds averaged two uid equations We assess the performance of our model in simulating bubbly ows underneath a plunging liquid jet and a hy draulic jump while varying the characteristic

    Original URL path: http://www.scorec.rpi.edu/reports/view_report.php?id=540 (2015-07-15)
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  • RPI SCOREC - Technical Reports
    application to simple point to point transfers of numerical information The thesis presents a ghost creation and deletion algorithm for the Flexible distributed Mesh Database FMDB that can create 1D 2D or 3D ghost objects in a mesh using bridge entities The algorithm utilizes neighborhood communication to create any number of ghost layers up to a point where the whole partitioned mesh is ghosted Ghosting that becomes invalid due to

    Original URL path: http://www.scorec.rpi.edu/reports/view_report.php?id=548 (2015-07-15)
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  • RPI SCOREC - Technical Reports
    stages of compaction strain energy is associated primarily with the bending of fibers while at higher densities it is stored primarily in the axial deformation mode It is shown that the exponent of the power law and the partition of energy in the axial and bending modes depends on the ratio of the bending to axial stiffness of the fibers Accounting for interfiber friction does not change the functional form

    Original URL path: http://www.scorec.rpi.edu/reports/view_report.php?id=549 (2015-07-15)
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  • RPI SCOREC - Technical Reports
    using a stabilized finite element method FEM and a level set approach to track the air water interfaces Fully developed turbulent single phase solutions obtained previously using the same stabilized FEM code were used as the initial flow field and an appropriate level set distance field was introduced to rep resent the air bubbles Surface tension and gravity forces were used in the simulations to physically rep resent the behavior

    Original URL path: http://www.scorec.rpi.edu/reports/view_report.php?id=557 (2015-07-15)
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  • RPI SCOREC - Technical Reports
    are focused within processor neighborhoods In some cases such as solvers having static mesh partitions the number and size of messages are known a priori However in other cases such as mesh adaptation the messages evolve and vary in number and size and include the dynamic movement of partition objects The current package provides a utility for dynamic applications based on two key attributes that are i explicit consideration of

    Original URL path: http://www.scorec.rpi.edu/reports/view_report.php?id=558 (2015-07-15)
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