Articles with "unstructured mesh" as a keyword



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Topography Least-Squares Reverse-Time Migration Based on Adaptive Unstructured Mesh

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Published in 2019 at "Surveys in Geophysics"

DOI: 10.1007/s10712-019-09578-0

Abstract: Least-squares reverse-time migration (LSRTM) attempts to invert the broadband-wavenumber reflectivity image by minimizing the residual between observed and predicted seismograms via linearized inversion. However, rugged topography poses a challenge in front of LSRTM. To tackle… read more here.

Keywords: topography; least squares; reverse time; squares reverse ... See more keywords
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An isotropic unstructured mesh generation method based on a fluid relaxation analogy

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Published in 2019 at "Computer Methods in Applied Mechanics and Engineering"

DOI: 10.1016/j.cma.2018.10.052

Abstract: In this paper, we propose an unstructured mesh generation method based on Lagrangian-particle fluid relaxation, imposing a global optimization strategy. With the presumption that the geometry can be described as a zero level set, an… read more here.

Keywords: method based; isotropic; method; unstructured mesh ... See more keywords
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Impact of Sea‐Ice Model Complexity on the Performance of an Unstructured‐Mesh Sea‐Ice/Ocean Model under Different Atmospheric Forcings

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Published in 2021 at "Journal of Advances in Modeling Earth Systems"

DOI: 10.1029/2020ms002438

Abstract: We have equipped the unstructured‐mesh global sea‐ice and ocean model FESOM2 with a set of physical parameterizations derived from the single‐column sea‐ice model Icepack. The update has substantially broadened the range of physical processes that… read more here.

Keywords: atmospheric forcings; model; sea ice; unstructured mesh ... See more keywords
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Hiroshima and Nagasaki Verification of an Unstructured Mesh-Based Transmutation Toolkit

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Published in 2020 at "Nuclear Technology"

DOI: 10.1080/00295450.2020.1741295

Abstract: Abstract In order to model the activated isotopes and resulting dose from a nuclear detonation in an urban environment, the Activation and Transmutation of Isotopes in an Unstructured Mesh (ACTIUM) Python toolkit has been developed… read more here.

Keywords: nagasaki verification; mesh based; hiroshima nagasaki; unstructured mesh ... See more keywords