Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 9 of 9 for “"staggered grids"”.
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Three-dimensional staggered grids for systems of hyperbolic conservation laws
… simple Riemann-solver free Finite Volume staggered grid scheme for the approximate solution of systems of conservation laws in one spatial dimension. The scheme itself is a natural extension of the first order Lax-Friedrichs scheme to second order accuracy. The better approximation order …
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Error estimates for numerical approximations to scalar conservation laws
… <br>Next, we generalize finite volume schemes on staggered grids to several <br>space dimensions and to a large class of unstructured grids. We give a <br>complete a priori and a posteriori error analysis. Furthermore, we study <br>higher order schemes and implicit schemes.
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Some numerical aspects of developing an operational primitive-equation model for the tropics.
… of forecast accuracy are made between staggered and non-staggered grids. All prediction models produce better verification statistics than persistence, with the staggered grid verifying better than the full grid. This appears to be a result of two-grid-length noise being of greater …
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Application of pressure-projection algorithms to a sharp projection immersed boundary method for the incompressible Navier-Stokes equations
… these higher order pressure-updating methods to staggered grids. Discrete operators in staggered grids simply do not commute in the same way that colocated grids do (as in the case of approximate projection methods). We then continue to develop suitably accurate projection approaches for the …
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A multidomain spectral method for computational aeroacoustics
… are handled by the use of unstructured grids of non-overlapping hexahedra that may have curved boundaries. An isoparametric mapping is used to transform each hexahedron on the master element, on which an efficient collocation spectral approximation can be defined by the use of tensor …
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A “Human Endeavor”: Killing In Contemporary U.S. Combat Narratives
… using a finite-difference method on rectilinear, staggered grids. The volume-of-fluid (VOF) technique with SOLA-VOF advection scheme is used to capture the free surface motion. The developed model is tested using several experimental dam-break flows and the VOF technique is found to be able to …
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Efficient modeling and waveform inversion of multicomponent seismic data for anisotropic media
… finite-difference (MFD) operators and fully staggered grids (FSGs). Also, I present an EFWI framework based on these propagators and discuss inversion strategies for estimating the parameters of coupled fluid/solid VTI (transversely isotropic with a vertical symmetry axis) media using …
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Germanium on silicon heteroepitaxy for high efficiency photovoltaic devices
… a concave Ge film perimeter. Ge mesa arrays were staggered to eliminate regions entirely dependent on overgrowth from mesa corners, decreasing the growth time until complete coalescence by at least 50% as compared to a regular gridded array. The faster overgrowth rates over isolated SiO² lines was …
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Discontinuous Galerkin methods for compressible and incompressible flows on space-time adaptive meshes
… (1) fully explicit DG methods on collocated grids and (2) semi-implicit DG methods on edge-based staggered grids. DG methods became increasingly popular in the last twenty years mainly because of three intriguing properties: i) non-linear L2 stability has been proven; ii) arbitrary high order …