Academic literature on the topic 'Grid refinement'

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Journal articles on the topic "Grid refinement"

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Bey, J. "Tetrahedral grid refinement." Computing 55, no. 4 (1995): 355–78. http://dx.doi.org/10.1007/bf02238487.

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Zängl, Günther, Daniel Reinert, and Florian Prill. "Grid refinement in ICON v2.6.4." Geoscientific Model Development 15, no. 18 (2022): 7153–76. http://dx.doi.org/10.5194/gmd-15-7153-2022.

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Abstract. This article describes the implementation of grid refinement in the ICOsahedral Nonhydrostatic (ICON) modeling system. It basically follows the classical two-way nesting approach known from widely used mesoscale models like MM5 or WRF, but it differs in the way feedback from fine grids to coarser grids is applied. Moreover, the ICON implementation supports vertical nesting in the sense that the upper boundary of a nested domain may be lower than that of its parent domain. Compared to the well-established implementations on quadrilateral grids, new methods had to be developed for inte
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Bindle, Liam, Randall V. Martin, Matthew J. Cooper, et al. "Grid-stretching capability for the GEOS-Chem 13.0.0 atmospheric chemistry model." Geoscientific Model Development 14, no. 10 (2021): 5977–97. http://dx.doi.org/10.5194/gmd-14-5977-2021.

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Abstract. Modeling atmospheric chemistry at fine resolution globally is computationally expensive; the capability to focus on specific geographic regions using a multiscale grid is desirable. Here, we develop, validate, and demonstrate stretched grids in the GEOS-Chem atmospheric chemistry model in its high-performance implementation (GCHP). These multiscale grids are specified at runtime by four parameters that offer users nimble control of the region that is refined and the resolution of the refinement. We validate the stretched-grid simulation versus global cubed-sphere simulations. We demo
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Goodfriend, Elijah, Fotini Katopodes Chow, Marcos Vanella, and Elias Balaras. "Improving Large-Eddy Simulation of Neutral Boundary Layer Flow across Grid Interfaces." Monthly Weather Review 143, no. 8 (2015): 3310–26. http://dx.doi.org/10.1175/mwr-d-14-00392.1.

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Abstract Increasing computational power has enabled grid resolutions that support large-eddy simulation (LES) of the atmospheric boundary layer. These simulations often use grid nesting or adaptive mesh refinement to refine the grid in regions of interest. LES generates errors at grid refinement interfaces, such as resolved energy accumulation, that may compromise solution accuracy. In this paper, the authors test the ability of two LES formulations and turbulence closures to mitigate errors associated with the use of LES on nonuniform grids for a half-channel approximation to a neutral atmosp
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Dang, Hui Xue, Feng Li Yang, and Jing Bo Yang. "Grid Validations for Downburst Simulations." Applied Mechanics and Materials 249-250 (December 2012): 159–63. http://dx.doi.org/10.4028/www.scientific.net/amm.249-250.159.

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Downbursts, which resulted from the flow downdraft in thunderstorms, have become one of the most destructive disasters to buildings including transmission towers, etc. This disaster has drawn researchers’ interests and progresses have been continuously made by employing test and numerical tools. Accounting for the grid validations in the numerical simulation of downbursts, eight grids with different grid point distributions are generated, and then their corresponding flow fields are calculated by solving Navier-Stokes equations. The numerical results are compared with test results to investiga
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Schmidt, Hauke, Sebastian Rast, Jiawei Bao, et al. "Effects of vertical grid spacing on the climate simulated in the ICON-Sapphire global storm-resolving model." Geoscientific Model Development 17, no. 4 (2024): 1563–84. http://dx.doi.org/10.5194/gmd-17-1563-2024.

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Abstract. Global storm-resolving models (GSRMs) use strongly refined horizontal grids compared with the climate models typically used in the Coupled Model Intercomparison Project (CMIP) but employ comparable vertical grid spacings. Here, we study how changes in the vertical grid spacing and adjustments to the integration time step affect the basic climate quantities simulated by the ICON-Sapphire atmospheric GSRM. Simulations are performed over a 45 d period for five different vertical grids with between 55 and 540 vertical layers and maximum tropospheric vertical grid spacings of between 800
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Düben, Peter D., and Peter Korn. "Atmosphere and Ocean Modeling on Grids of Variable Resolution—A 2D Case Study." Monthly Weather Review 142, no. 5 (2014): 1997–2017. http://dx.doi.org/10.1175/mwr-d-13-00217.1.

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Abstract Grids of variable resolution are of great interest in atmosphere and ocean modeling as they offer a route to higher local resolution and improved solutions. On the other hand there are changes in grid resolution considered to be problematic because of the errors they create between coarse and fine parts of a grid due to reflection and scattering of waves. On complex multidimensional domains these errors resist theoretical investigation and demand numerical experiments. With a low-order hybrid continuous/discontinuous finite-element model of the inviscid and viscous shallow-water equat
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Cui, Weizhe, and Qichen Hao. "Comparing Q-Tree with Nested Grids for Simulating Managed River Recharge of Groundwater." Water 12, no. 12 (2020): 3516. http://dx.doi.org/10.3390/w12123516.

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The use of rivers to recharge groundwater is a key water resource management method. High-precision simulations of the groundwater level near rivers can be used to accurately assess the recharge effect. In this study, we used two unstructured grid refinement methods, namely, the quadtree (Q-tree) and nested grid refinement techniques, to simulate groundwater movement under river recharge. We comparatively analyzed the two refinement methods by considering the simulated groundwater level changes before and after the recharge at different distances from the river and by analyzing the groundwater
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Chen, Tsu-Fen, and R. Kannan*. "GRID REFINEMENT AND NONLINEAR SOR." Numerical Functional Analysis and Optimization 22, no. 3-4 (2001): 387–403. http://dx.doi.org/10.1081/nfa-100105109.

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Gross, Sven, and Arnold Reusken. "Parallel Multilevel Tetrahedral Grid Refinement." SIAM Journal on Scientific Computing 26, no. 4 (2005): 1261–88. http://dx.doi.org/10.1137/s1064827503425237.

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Dissertations / Theses on the topic "Grid refinement"

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Mozaffari, Sajad. "Adaptive Grid Refinement for Hybrid RANS/LES." Thesis, Ecole centrale de Nantes, 2020. http://www.theses.fr/2020ECDN0009.

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Les modèles hybrides RANS/LES, qui utilisent les capacités des modèles RANS et LES, conviennent pour la simulation d’écoulements à nombre de Reynolds élevé avec des phénomènes physiques et des géométries complexes. Pourtant, en raison de la dépendance du comportement de ces modèles par rapport à la taille locale des mailles, la génération de maillages avec une bonne résolution est cruciale. Pour une simulation hybride RANS/LES complexe, la génération du maillage est une étape qui demande un effort important. Un processus de raffinement adaptatif est une alternative intéressante, mais nécessite
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Dipasquale, Daniele. "Adaptive Grid Refinement and Scaling Techniques Applied to Peridynamics." Doctoral thesis, Università degli studi di Padova, 2017. http://hdl.handle.net/11577/3426213.

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Peridynamics, a recently proposed non-local continuum theory, is particularly suitable to describe fracture phenomena in a wide range of materials. One of most common techniques for its numerical implementation is based on a mesh-free approach, in which the whole body is discretized with a uniform grid and a constant horizon, the latter related to the length-scale of the material and/or of the phenomenon analysed. As a consequence of that, computational resources may not be used efficiently. The present work proposes adaptive refinement/scaling algorithms for 2D and 3D peridynamic grids, to redu
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Sinha, Bhaskar. "Surface mesh generation using curvature-based refinement." Master's thesis, Mississippi State : Mississippi State University, 2002. http://library.msstate.edu/etd/show.asp?etd=etd-09252002-141359.

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Osborn, Bryan Russell. "A lattice kinetic scheme with grid refinement for 3D resistive mangetohydrodynamics." College Park, Md. : University of Maryland, 2004. http://hdl.handle.net/1903/1560.

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Thesis (M.S.) -- University of Maryland, College Park, 2004.<br>Thesis research directed by: Applied Mathematics Program. Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.
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Parrish, Michael H. "A selective approach to conformal refinement of unstructured hexahedral meshes /." Diss., CLICK HERE for online access, 2007. http://contentdm.lib.byu.edu/ETD/image/etd1985.pdf.

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Pikoulas, Christos. "A local grid refinement technique for fluid flow predictions in 3-D." Thesis, Imperial College London, 1995. http://hdl.handle.net/10044/1/8095.

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Edgel, Jared D. "An Adaptive Grid-Based All Hexahedral Meshing Algorithm Based on 2-Refinement." BYU ScholarsArchive, 2010. https://scholarsarchive.byu.edu/etd/2241.

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Adaptive all-hexahedral meshing algorithms have many desirable features. These algorithms provide a mesh that is efficient for analysis by providing a high element density in specific locations, such as areas of high stress gradient or high curvature and reduced mesh density in other areas of less importance. In addition, inside-out hexahedral grid based schemes, using Cartesian structured grids for the base mesh, have shown great promise in accommodating automatic all-hexahedral algorithms. In these algorithms mesh refinement is generally used to capture geometric features. Unfortunately, mos
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Röblitz, Susanna [Verfasser]. "Statistical error estimation and grid-free hierarchical refinement in conformation dynamics / Susanna Röblitz." Berlin : Freie Universität Berlin, 2009. http://d-nb.info/102346473X/34.

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Pashias, Christos. "Propeller tip vortex simulation using adaptive grid refinement based on flow feature identification." Thesis, University of Southampton, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.427353.

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Mohammed, Najla Abdullah. "Grid refinement and verification estimates for the RBF construction method of Lyapunov functions." Thesis, University of Sussex, 2016. http://sro.sussex.ac.uk/id/eprint/65711/.

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Lyapunov functions are functions with negative orbital derivative, whose existence guarantee the stability of an equilibrium point of an ODE. Moreover, sub-level sets of a Lyapunov function are subsets of the domain of attraction of the equilibrium. In this thesis, we improve an established numerical method to construct Lyapunov functions using the radial basis functions (RBF) collocation method. The RBF collocation method approximates the solution of linear PDE's using scattered collocation points, and one of its applications is the construction of Lyapunov functions. More precisely, we appro
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Books on the topic "Grid refinement"

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J, Barth Timothy, and Ames Research Center, eds. Three-dimensional unstructured grid refinement and optimization using edge swapping. National Aeronautics and Space Administration, Ames Research Center, 1993.

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J, Barth Timothy, and Ames Research Center, eds. Three-dimensional unstructured grid refinement and optimization using edge swapping. National Aeronautics and Space Administration, Ames Research Center, 1993.

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Timothy, Barth, and Ames Research Center, eds. Three-dimensional unstructured grid refinement and optimization using edge swapping. National Aeronautics and Space Administration, Ames Research Center, 1993.

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Baden, Scott B., Nikos P. Chrisochoides, Dennis B. Gannon, and Michael L. Norman, eds. Structured Adaptive Mesh Refinement (SAMR) Grid Methods. Springer New York, 2000. http://dx.doi.org/10.1007/978-1-4612-1252-2.

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B, Baden Scott, ed. Structured adaptive mesh refinement (SAMR) grid methods. Springer, 2000.

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Baden, Scott B. Structured Adaptive Mesh Refinement (SAMR) Grid Methods. Springer New York, 2000.

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R, Hanebutte Ulf, and Langley Research Center, eds. A parallel adaptive mesh refinement algorithm. National Aeronautics and Space Administration, Langley Research Center, 1993.

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Institute for Computer Applications in Science and Engineering., ed. A Cartesian grid approach with hierarchical refinement for compressible flows. Institute for Computer Applications in Science and Engineering, NASA Langley Research Center, 1994.

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Trompert, R. A. Local uniform grid refinement for time-dependent partial differential equations. Centrum voor Wiskunde en Informatica, 1995.

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A, Felippa Carlos, Park K. C, and United States. National Aeronautics and Space Administration., eds. Error estimation and adaptive mesh refinement for parallel analysis of shell structures. Dept. of Aerospace Engineering Sciences and Center for Aerospace Structures, University of Colorado, 1994.

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Book chapters on the topic "Grid refinement"

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Heinkenschloss, M., M. Laumen, and E. W. Sachs. "Gauss-Newton methods with grid refinement." In International Series of Numerical Mathematics / Internationale Schriftenreihe zur Numerischen Mathematik / Série Internationale d’Analyse Numérique. Birkhäuser Basel, 1991. http://dx.doi.org/10.1007/978-3-0348-6418-3_11.

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van Leeuwen, Tristan, and K. Joost Batenburg. "Adaptive Grid Refinement for Discrete Tomography." In Advanced Information Systems Engineering. Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-319-09955-2_25.

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Tóth, Péter, and Máté Márton Lohász. "Anisotropic Grid Refinement Study for LES." In Quality and Reliability of Large-Eddy Simulations. Springer Netherlands, 2008. http://dx.doi.org/10.1007/978-1-4020-8578-9_14.

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Wackers, Jeroen, Ganbo Deng, Emmanuel Guilmineau, Alban Leroyer, Patrick Queutey, and Michel Visonneau. "Creating Free-Surface Flow Grids with Automatic Grid Refinement." In New Challenges in Grid Generation and Adaptivity for Scientific Computing. Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-06053-8_15.

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Neeman, Henry. "HAMR: The Hierarchical Adaptive Mesh Refinement System." In Structured Adaptive Mesh Refinement (SAMR) Grid Methods. Springer New York, 2000. http://dx.doi.org/10.1007/978-1-4612-1252-2_2.

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Mehrotra, Piyush. "Structured Adaptive Mesh Refinement using High Performance Fortran." In Structured Adaptive Mesh Refinement (SAMR) Grid Methods. Springer New York, 2000. http://dx.doi.org/10.1007/978-1-4612-1252-2_6.

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Parashar, Manish, and James C. Browne. "Systems Engineering for High Performance Computing Software: The HDDA/DAGH Infrastructure for Implementation of Parallel Structured Adaptive Mesh." In Structured Adaptive Mesh Refinement (SAMR) Grid Methods. Springer New York, 2000. http://dx.doi.org/10.1007/978-1-4612-1252-2_1.

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Bryan, Greg L., and Michael L. Norman. "A Hybrid AMR Application for Cosmology and Astrophysics." In Structured Adaptive Mesh Refinement (SAMR) Grid Methods. Springer New York, 2000. http://dx.doi.org/10.1007/978-1-4612-1252-2_10.

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Quinlan, Dan. "AMR++: A Design for Parallel Object-Oriented Adaptive Mesh Refinement." In Structured Adaptive Mesh Refinement (SAMR) Grid Methods. Springer New York, 2000. http://dx.doi.org/10.1007/978-1-4612-1252-2_3.

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Michalakes, John G. "RSL: A Parallel Runtime System Library for Regional Atmospheric Models with Nesting." In Structured Adaptive Mesh Refinement (SAMR) Grid Methods. Springer New York, 2000. http://dx.doi.org/10.1007/978-1-4612-1252-2_4.

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Conference papers on the topic "Grid refinement"

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Shan, Yaru, Akram Shafie, Jinhong Yuan, and Fanggang Wang. "Off-Grid Channel Estimation Using Grid Refinement and Adjustment for ODDM Systems." In 2024 IEEE International Conference on Communications Workshops (ICC Workshops). IEEE, 2024. http://dx.doi.org/10.1109/iccworkshops59551.2024.10615618.

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Qiu, Wenfeng, Chihao Ma, Jianhua Li, ren qian, and Yong Zhao. "Learnable upsampling bilateral grid refinement for stereo matching network." In Fourth International Conference on Advanced Algorithms and Neural Networks (AANN 2024), edited by Qinghua Lu and Weishan Zhang. SPIE, 2024. http://dx.doi.org/10.1117/12.3050134.

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M. Cheshire, I., and A. Renriquez. "Local Grid Refinement." In ECMOR I - 1st European Conference on the Mathematics of Oil Recovery. European Association of Geoscientists & Engineers, 1989. http://dx.doi.org/10.3997/2214-4609.201411317.

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Ewing, R. E., and R. D. Lazarov. "Adaptive Local Grid Refinement." In SPE Rocky Mountain Regional Meeting. Society of Petroleum Engineers, 1988. http://dx.doi.org/10.2118/17806-ms.

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Ghosh, S. "Curvilinear Local Grid Refinement." In European Petroleum Conference. Society of Petroleum Engineers, 1998. http://dx.doi.org/10.2118/50633-ms.

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Li, Junchao, Huiying Tang, Yongbin Zhang, and Xin Li. "An Adaptive Grid Refinement Method for Flow-Based Embedded Discrete Fracture Models." In SPE Reservoir Simulation Conference. SPE, 2023. http://dx.doi.org/10.2118/212194-ms.

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Abstract Projection-based embedded discrete fracture models (pEDFMs) are proven effective for modeling flow barrier effects of high-conductivity or impermeable fractures. However, local grid refinements are still needed to improve the accuracy of simulation in flow areas near fractures. In recent years, adaptive grid refinement techniques have received a lot of attention for dealing with highly heterogeneous and fractured models. But few of them are capable of EDFMs. In this paper, an adaptive grid refinement method under flow-based EDFMs (fEDFMs) is proposed for fractured models. The method s
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Kumar, Ashok V., and Ravi K. Burla. "Local Hierarchical Grid Refinement for Analysis Using Structured Grids." In ASME 2009 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2009. http://dx.doi.org/10.1115/detc2009-87564.

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Structured grids with regular shaped uniform elements are easy to generate automatically and have been used in extended finite element approaches to avoid mesh generation difficulties. But the grid or mesh should ideally have higher resolution in areas where the solution has large gradients. In this paper a technique for refinement of structured grids is presented that allows refinement of the grid without violating compatibility requirements by using solution structures constructed using approximate step functions. Essential boundary conditions are applied using implicit boundary method, whic
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van der Plas, Peter, Arthur E. P. Veldman, Henk Seubers, Joop Helder, and Ka-Wing Lam. "Adaptive Grid Refinement for Two-Phase Offshore Applications." In ASME 2018 37th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/omae2018-77309.

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In the past, the CFD simulation method ComFLOW has been successfully applied in a wide range of offshore applications, involving wave simulations and impact calculations. In many of these calculations the area of interest comprises a small part of the domain and remains fixed in time, which allows for efficient grid refinement by means of grid stretching or static local refinement. However, when trying to accurately resolve the surface dynamics and kinematics of irregular and breaking waves, the resolution requirements are strongly time-dependent and difficult to predict in advance. Efficient
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Kamkar, Sean, Antony Jameson, and Andrew Wissink. "Automated Grid Refinement Using Feature Detection." In 47th AIAA Aerospace Sciences Meeting including The New Horizons Forum and Aerospace Exposition. American Institute of Aeronautics and Astronautics, 2009. http://dx.doi.org/10.2514/6.2009-1496.

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Thibaut, M., Y. Caillabet, and E. Flauraud. "Local Grid Refinement for Basin Models." In 66th EAGE Conference & Exhibition. European Association of Geoscientists & Engineers, 2004. http://dx.doi.org/10.3997/2214-4609-pdb.3.f005.

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Reports on the topic "Grid refinement"

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Garcia, Julio, and Karsten Pruess. Local grid refinement for multi-scale geothermal reservoir simulation with TOUGH2. Office of Scientific and Technical Information (OSTI), 2000. http://dx.doi.org/10.2172/764389.

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S.C. James, J.E. Dickinson, S.W. Mehl, et al. NEW GHOST-NODE METHOD FOR LINKING DIFFERENT MODELS WITH VARIED GRID REFINEMENT. Office of Scientific and Technical Information (OSTI), 2006. http://dx.doi.org/10.2172/884895.

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J. dickinson, S.C. James, S. Mehl, M.C. Hill, S. Leake, and G.A. Zyvoloski. A NEW GHOST-NODE METHOD FOR LINKING DIFFERENT MODELS WITH VARIED GRID REFINEMENT. Office of Scientific and Technical Information (OSTI), 2005. http://dx.doi.org/10.2172/884931.

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Prusa, Joseph. COLLABORATIVE RESEARCH: CONTINUOUS DYNAMIC GRID ADAPTATION IN A GLOBAL ATMOSPHERIC MODEL: APPLICATION AND REFINEMENT. Office of Scientific and Technical Information (OSTI), 2012. http://dx.doi.org/10.2172/1043034.

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Gutowski, William J., Joseph M. Prusa, and Piotr K. Smolarkiewicz. COLLABORATIVE RESEARCH: CONTINUOUS DYNAMIC GRID ADAPTATION IN A GLOBAL ATMOSPHERIC MODEL: APPLICATION AND REFINEMENT. Office of Scientific and Technical Information (OSTI), 2012. http://dx.doi.org/10.2172/1043077.

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William J. Gutowski and Piotr K. Smolarkiewicz Joseph M. Prusa. Scientific Final Report: COLLABORATIVE RESEARCH: CONTINUOUS DYNAMIC GRID ADAPTATION IN A GLOBAL ATMOSPHERIC MODEL: APPLICATION AND REFINEMENT. Office of Scientific and Technical Information (OSTI), 2012. http://dx.doi.org/10.2172/1038042.

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Quinlan, D. J., J. E. ,. Jr Dendy, and Y. Shapira. Elliptic Solvers for Adaptive Mesh Refinement Grids. Office of Scientific and Technical Information (OSTI), 1999. http://dx.doi.org/10.2172/763231.

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STAGG, A., J. HALLBERG, and J. SCHMIDT. A PARALLEL, ADAPTIVE REFINEMENT SCHEME FOR TETRAHEDRAL AND TRIANGULAR GRIDS. Office of Scientific and Technical Information (OSTI), 1999. http://dx.doi.org/10.2172/787306.

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Feeley, Michael, Marilyn Brandt, David Bryan, et al. A cooperative multiagency reef fish monitoring protocol for the Florida and US Virgin Islands coral reef ecosystems: Protocol narrative version—2.0. National Park Service, 2025. https://doi.org/10.36967/2310167.

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Reef fish populations play a vital ecological and economic role in the coral reef ecosystems of Florida and the U.S. Virgin Islands (USVI). However, these populations face significant threats from habitat degradation, rising global temperature, coral diseases, and increased fishing pressures. Traditional fishery-dependent data have proven inadequate for accurately assessing reef fish populations, necessitating the development of standardized, fishery-independent methodology. This document presents the Cooperative Multiagency Reef Fish Monitoring Protocol, a unified methodology designed to asse
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