Academic literature on the topic 'Barotropic models'

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Journal articles on the topic "Barotropic models"

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MELNIKOV, V. N., and V. R. GAVRILOV. "2-COMPONENT INTEGRABLE COSMOLOGICAL MODELS." International Journal of Modern Physics A 20, no. 11 (2005): 2246–55. http://dx.doi.org/10.1142/s0217751x05024456.

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A large class of integrable cosmological models with two matter components is presented. The D-dimensional models on the space-time manifold [Formula: see text] are studied in the presence of 2 separately conserved barotropic perfect fluids. Such model are reducible to pseudo-Euclidean Toda-like system and integrable when their barotropic parameters satisfy some algebraic relations. Methods for integrating of pseudo-Euclidean Toda-like systems are based on the Minkowski-like geometry for characteristic vectors composed from the barotropic parameters. We also apply the methods for the spatially
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Sempf, Mario, Klaus Dethloff, Dörthe Handorf, and Michael V. Kurgansky. "Circulation Regimes due to Attractor Merging in Atmospheric Models." Journal of the Atmospheric Sciences 64, no. 6 (2007): 2029–44. http://dx.doi.org/10.1175/jas3923.1.

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From a dynamical systems theory perspective, the mechanisms of atmospheric regime behavior in a barotropic model, a pseudobarotropic model, and a baroclinic three-level model, where all of them show quite realistic regimes, are unveiled. Along with this, the role played by multiple equilibria for the emergence of regimes in barotropic models is critically reexamined. In the barotropic model, a sequence of bifurcations is observed, which leads to the merging of coexisting attractors and results in two pronounced regimes corresponding to high- and low-index flow. The pseudobarotropic model is co
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Tripathy, Sunil K., Subodha K. Nayak, Subrat K. Sahu, and Tushar R. Routray. "Bulk viscous barotropic magnetised string cosmological models." Astrophysics and Space Science 323, no. 3 (2009): 281–87. http://dx.doi.org/10.1007/s10509-009-0067-x.

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Kwasniok, Frank. "Empirical Low-Order Models of Barotropic Flow." Journal of the Atmospheric Sciences 61, no. 2 (2004): 235–45. http://dx.doi.org/10.1175/1520-0469(2004)061<0235:elmobf>2.0.co;2.

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Zhao, Baojun, Wenjin Sun, and Tianming Zhan. "The Modified Quasi-geostrophic Barotropic Models Based on Unsteady Topography." Earth Sciences Research Journal 21, no. 1 (2017): 23. http://dx.doi.org/10.15446/esrj.v21n1.63007.

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New models using scale analysis and perturbation methods were derivated starting from the shallow water equations based on barotropic fluids. In the paper, to discuss the irregular topography with different magnitudes, especially considering the condition of the vast terrain, some modified quasi-geostrophic barotropic models were obtained. The unsteady terrain is more suitable to describe the motion of the fluid state of the earth because of the change of global climate and environment, so the modified models are more rational potential vorticity equations. If we do not consider the influence
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Egger, Joseph. "Barotropic Instability at Minimal Resolution." Monthly Weather Review 134, no. 10 (2006): 2943–50. http://dx.doi.org/10.1175/mwr3225.1.

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Abstract Two linear minimum-resolution models of β-plane channel flow are presented in analogy to the well-known two-layer model of baroclinic instability in order to see if basic features of barotropic instability can be demonstrated using similarly simple models. Two models are discussed within this pedagogical framework. A spectral model with two wave modes is applied to a cosine jet. Necessary conditions for instability are derived. The stability analysis shows that this simple model captures the shortwave cutoff and the asymmetry of the instability with respect to the direction of the jet
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Biswas, Promila, and Ritabrata Biswas. "Interacting models of generalized Chaplygin gas and modified Chaplygin gas with barotropic fluid." Modern Physics Letters A 34, no. 09 (2019): 1950064. http://dx.doi.org/10.1142/s0217732319500640.

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In this paper, we consider two different models of our present universe. We choose the models which consist of different sets of two separate fluids. The first one of each set tries to justify the late time acceleration and the second one is barotropic fluid. The former model considers our present time universe to be homogeneously filled up by Generalized Chaplygin Gas which is interacting with barotropic fluid. On the other hand, the latter model considers that the cosmic acceleration is generated by Modified Chaplygin Gas which is interacting with matter depicted by barotropic equation of st
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Muraki, David J., and Chris Snyder. "Vortex Dipoles for Surface Quasigeostrophic Models." Journal of the Atmospheric Sciences 64, no. 8 (2007): 2961–67. http://dx.doi.org/10.1175/jas3958.1.

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A new class of exact vortex dipole solutions is derived for surface quasigeostrophic (sQG) models. The solutions extend the two-dimensional barotropic modon to fully three-dimensional, continuously stratified flow and are a simple model of localized jets on the tropopause. In addition to the basic sQG dipole, dipole structures exist for a layer of uniform potential vorticity between two rigid boundaries and for a dipole in the presence of uniform background vertical shear and horizontal potential temperature gradient. In the former case, the solution approaches the barotropic Lamb dipole in th
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Ji, Xuan, J. David Neelin, Sang-Ki Lee, and Carlos R. Mechoso. "Interhemispheric Teleconnections from Tropical Heat Sources in Intermediate and Simple Models." Journal of Climate 27, no. 2 (2014): 684–97. http://dx.doi.org/10.1175/jcli-d-13-00017.1.

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Abstract The mechanisms that control the interhemispheric teleconnections from tropical heat sources are investigated using an intermediate complexity model [a quasi-equilibrium tropical circulation model (QTCM)] and a simple linear two-level model with dry dynamics. Illustrating the interhemispheric teleconnection process with an Atlantic warm pool principal case, the heat source directly excites a baroclinic response that spreads across the equator. Then, three processes involving baroclinic–barotropic interactions—shear advection, surface drag, and vertical advection—force a cross-equatoria
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Willoughby, H. E. "Normal-Mode Initialization of Barotropic Vortex Motion Models." Journal of the Atmospheric Sciences 52, no. 24 (1995): 4501–14. http://dx.doi.org/10.1175/1520-0469(1995)052<4501:nmiobv>2.0.co;2.

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Dissertations / Theses on the topic "Barotropic models"

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Bills, Peter John. "Barotropic depth-averaged and three-dimensional tidal programs for shallow seas /." Title page, contents and summary only, 1991. http://web4.library.adelaide.edu.au/theses/09PH/09phb599.pdf.

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Metz, Werner. "Linear barotropic simulation of atmospheric low-frequency variability." Universitätsbibliothek Leipzig, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-212307.

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A steady-state barotropic model, linearized about a GCM-derived 500 hPa basic state, is driven by a sample of \"observed\" forcing fields. lt tums out that the leading mode (LEOF) obtained from the sample of linear solutions matches weil with the leading EOF of low-frequency atmospheric variability actually occurring in the GCM. The response ofthe linear model is analysed in tenns of the singular modes of the model\'s linear operator. lt is found that about 50 percent ofthe spatial variance of the LEOF can be explained in tenns of the leading two singular modes. This finding is reflected also
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Metz, Werner. "Linear barotropic simulation of atmospheric low-frequency variability." Universität Leipzig, 1995. https://ul.qucosa.de/id/qucosa%3A15014.

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A steady-state barotropic model, linearized about a GCM-derived 500 hPa basic state, is driven by a sample of \'observed\' forcing fields. lt tums out that the leading mode (LEOF) obtained from the sample of linear solutions matches weil with the leading EOF of low-frequency atmospheric variability actually occurring in the GCM. The response ofthe linear model is analysed in tenns of the singular modes of the model\''s linear operator. lt is found that about 50 percent ofthe spatial variance of the LEOF can be explained in tenns of the leading two singular modes. This finding is reflected also
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Kiss, Andrew Elek, and Andrew Kiss@anu edu au. "Dynamics of laboratory models of the wind-driven ocean circulation." The Australian National University. Research School of Earth Sciences, 2001. http://thesis.anu.edu.au./public/adt-ANU20011018.115707.

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This thesis presents a numerical exploration of the dynamics governing rotating flow driven by a surface stress in the " sliced cylinder " model of Pedlosky & Greenspan (1967) and Beardsley (1969), and its close relative, the " sliced cone " model introduced by Griffiths & Veronis (1997). The sliced cylinder model simulates the barotropic wind-driven circulation in a circular basin with vertical sidewalls, using a depth gradient to mimic the effects of a gradient in Coriolis parameter. In the sliced cone the vertical sidewalls are replaced by an azimuthally uniform slope around the
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Wu, Peili. "On linear structures and persistent anomalies in the atmosphere." Thesis, University of London, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.301916.

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Le, Roux Daniel Y. "A semi-Lagrangian finite element barotropic ocean model." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp03/NQ44492.pdf.

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Ling, Alister R. "Blocking-like flows in a hemispherical barotropic model." Thesis, McGill University, 1985. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=65945.

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Bilodeau, Bernard. "Accuracy of a truncated barotropic spectral model : numerical versus analytical solutions." Thesis, McGill University, 1985. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=66037.

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Petroliagis, Thomas I. "Studies of barotropic flow over topography using a Galerkin Finite Element model." Thesis, Monterey, California. Naval Postgraduate School, 1988. http://hdl.handle.net/10945/23411.

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A finite element shallow-water model is tested with two types of surface topography. The model uses rectangular subdivisions in a vorticity-divergence formulation, and a semi-implicit time discretization. In the first experiment an east-west ridge or valley is placed in a channel with east-west periodic conditions. Linear quasi-geostrophic solutions are derived with the rigid lid assumption. The Rossby waves are successfully simulated in the model with linear solutions as the initial conditions. The model phase speeds are very close to the analytic values when the latter are properly corrected
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Gravel, Sylvie. "Periodic and stationary solutions to a forced-dissipated barotropic model of the atmosphere." Thesis, McGill University, 1988. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=75937.

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Using a barotropic model, some aspects of the theory of multiple equilibria were investigated, namely, the genesis of multiple equilibria via bent resonance, and the properties of some of the linearly unstable low index solutions.<br>These studies were conducted using numerical models with a truncated spectral representation of the dependent variables, truncation that was determined in terms of its capacity to allow for nonlinear interactions. By means of a continuation algorithm, the stationary solutions of the potential vorticity equation were calculated for a number of regions of parameter
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Books on the topic "Barotropic models"

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Jensen, Tommy G. Barotropic models of the wind-driven large scale ocean circulation. Københavns universitet, Geofysisk institut, afdeling for fysisk oceanografi, 1986.

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Newton, R. E. Performance comparisons for two versions of the Staniforth-Mitchell barotropic numerical weather prediction code. Naval Postgraduate School, 1988.

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Sinibaldi, Edoardo. Implicit preconditioned numerical schemes for the simulation of three-dimensional barotropic flows. Edizioni della Normale, 2007.

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Lawrence, Wendy B. Measurements of a barotropic planetary vorticity mode in an eddy-resolving quasi-geostrophic model using acoustic tomography. Woods Hole Oceanographic Institution, 1988.

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Eifler, W. Numerical verification exercises with different computer models for simulating sea circulation pattern: The vertical diffusion of momentum in a forced barotropic sea. Commission of the European Communities, 1991.

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Petroliagis, Thomas I. Studies of barotropic flow over topography using a Galerkin Finite Element model. Naval Postgraduate School, 1988.

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7

R, Allen D., and United States. National Aeronautics and Space Administration., eds. The 4-day wave as observed from the Upper Atmosphere Research Satellite microwave limb sounder. National Aeronautics and Space Administration, 1998.

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Deruelle, Nathalie, and Jean-Philippe Uzan. Self-gravitating fluids. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780198786399.003.0015.

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This chapter briefly describes ‘perfect fluids’. These are characterized by their mass density ρ‎(t, xⁱ), pressure p(t, ⁱ), and velocity field v(t, ⁱ). The motion and equilibrium configurations of these fluids are determined by the equation of state, for example, p = p(ρ‎) for a barotropic fluid, and by the gravitational potential U(t, ⁱ) created at a point ⁱ by other fluid elements. The chapter shows that, given an equation of state, the equations of the problem to be solved are the continuity equation, the Euler equation, and the Poisson equation. It then considers static models with spheric
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Investigation of a Divergent Barotropic Prediction Model for the 300-MB Level. Creative Media Partners, LLC, 2021.

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Zeitlin, Vladimir. Instabilities of Jets and Fronts and their Nonlinear Evolution. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780198804338.003.0010.

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Notions of linear and nonlinear hydrodynamic (in)stability are explained and criteria of instability of plane-parallel flows are presented. Instabilities of jets are investigated by direct pseudospectral collocation method in various flow configurations, starting from the classical barotropic and baroclinic instabilities. Characteristic features of instabilities are displayed, as well as typical patterns of their nonlinear saturation. It is shown that in the Phillips model of Chapter 5, new ageostrophic Rossby–Kelvin and shear instabilities appear at finite Rossby numbers. These instabilities
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Book chapters on the topic "Barotropic models"

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Kantha, Lakshmi. "Barotropic Tides in the Gulf of Mexico." In Circulation in the Gulf of Mexico: Observations and Models. American Geophysical Union, 2013. http://dx.doi.org/10.1029/161gm13.

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Meyapin, Yannick, Denys Dutykh, and Marguerite Gisclon. "Two-Fluid Barotropic Models for Powder-Snow Avalanche Flows." In Notes on Numerical Fluid Mechanics and Multidisciplinary Design. Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-17770-5_17.

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Paegle, J. N., Zhao Zhen, Hong Yan, and J. Paegle. "Sources of Flow Variability in Barotropic Primitive Equation Models." In Proceedings of International Symposium on the Qinghai-Xizang Plateau and Mountain Meteorology. American Meteorological Society, 1986. http://dx.doi.org/10.1007/978-1-935704-19-5_38.

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Luettich, Richard A., and Joannes J. Westerink. "Continental shelf scale convergence studies with a barotropic tidal model." In Quantitative Skill Assessment for Coastal Ocean Models. American Geophysical Union, 1995. http://dx.doi.org/10.1029/ce047p0349.

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Berthelin, Florent, Thierry Goudon, and Sebastian Minjeaud. "Consistency Analysis of a 1D Finite Volume Scheme for Barotropic Euler Models." In Finite Volumes for Complex Applications VII-Methods and Theoretical Aspects. Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-05684-5_8.

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Dymnikov, Valentin P., and Aleksander N. Filatov. "Analysis of Barotropic Model." In Mathematics of Climate Modeling. Birkhäuser Boston, 1997. http://dx.doi.org/10.1007/978-1-4612-4148-5_3.

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Palmer, T. N. "Extratropical Response to SST Anomalies and the Barotropic Model." In Climate-Ocean Interaction. Springer Netherlands, 1990. http://dx.doi.org/10.1007/978-94-009-2093-4_12.

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Burpee, Robert W. "The Sanders Barotropic Tropical Cyclone Track Prediction Model (SANBAR)." In Synoptic—Dynamic Meteorology and Weather Analysis and Forecasting. American Meteorological Society, 2008. http://dx.doi.org/10.1007/978-0-933876-68-2_11.

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Abgrall, Rémi, and Sophie Dallet. "An Asymptotic Preserving Scheme for the Barotropic Baer-Nunziato Model." In Finite Volumes for Complex Applications VII-Elliptic, Parabolic and Hyperbolic Problems. Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-05591-6_75.

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Thein, Ferdinand. "The Shizuta-Kawashima Condition for the Barotropic SHTC Two Fluid Model." In SEMA SIMAI Springer Series. Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-55260-1_28.

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Conference papers on the topic "Barotropic models"

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Kotambkar, S., P. M. Parkhi, G. P. Singh, and R. K. Kelkar. "Evolution of spatially anisotropic viscous cosmological models filled with barotropic fluid." In SECOND ONLINE INTERNATIONAL CONFERENCE ON RESEARCH FRONTIERS IN SCIENCES. AIP Publishing, 2024. http://dx.doi.org/10.1063/5.0225044.

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Kumar, Amit, Simone Parisi, Roberto Agromayor, Jens Honore Walther, and Fredrik Haglind. "Numerical Analysis of a Two-Phase Turbine: a Comparative Study Between Barotropic and Mixture Models." In ASME Turbo Expo 2024: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2024. http://dx.doi.org/10.1115/gt2024-127133.

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Abstract Two-phase turbines offer the potential to significantly enhance the performance of power generation and refrigeration systems. However, their development has been hindered by comparatively lower efficiencies resulting from additional loss mechanisms absent in single-phase turbines. In this context, Computational Fluid Dynamics (CFD) emerges as a crucial tool to predict the performance of two-phase turbines and guide the design process towards higher efficiency. To date, most multiphase CFD studies on turbomachinery have focused on condensation in the final stages of steam turbines, an
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Jakovljević, Aleksandar, Martin Dumont, and Frédéric Dias. "Effect of Wave-Current Interaction on Strong Tidal Current." In ASME 2018 37th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/omae2018-78121.

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We consider the influence of wave-current interactions (WCI) on the tidal energy resource through changes in the velocity field of tidal currents. In order to investigate this, we have run three models: SWAN (stand-alone), ROMS (stand-alone) and COAWST (two-way coupled ROMS and SWAN model). The research area of our studies is Alderney Race, France, an area with strong currents, which has a strong potential for tidal turbine deployment. The time period used for the simulations was March 2008, when a strong storm hit the Alderney Race area and produced significant wave heights (Hs) of up to 7 m
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Coelho, Henrique, Zhong Peng, Dave Sproson, and Jill Bradon. "A Methodology to Characterize Internal Solitons in the Ocean." In ASME 2018 37th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/omae2018-77869.

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Internal waves in the ocean occur in stably stratified fluids when a water parcel is vertically displaced by some external forcing and is restored by buoyancy forces. A specific case of such internal waves is internal tides and their associated currents. These currents can be significant in areas where internal waves degenerate into nonlinear solitary waves, known as solitons. Solitons are potentially hazardous for offshore engineering constructions, such as oil/gas pipelines and floating platforms. The most efficient mechanism of soliton generation is the tidal energy conversion from barotrop
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Kato, Chisachi. "Industry-University Collaborative Project on Numerical Predictions of Cavitating Flows in Hydraulic Machinery: Part 1—Benchmark Test on Cavitating Hydrofoils." In ASME-JSME-KSME 2011 Joint Fluids Engineering Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/ajk2011-06084.

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Through an industry-university collaborative project, extensive benchmark studies have been made for numerical prediction of cavitating flows around two-dimensional Hydrofoils: Clark-Y 11.7% and NACA0015. The emphases are placed on the ability of present cavitation models to predict the breakdown characteristics for these hydrofoils. The benchmarking was done for a light and a moderate loading condition of these hydrofoils at a chord-based Reynolds number in the order of 106. Four commercial CFD flow solvers, ANSYS CFX, ANSYS Fluent, and STAR-CCM+, and SCRYU/Tetra, along with four open-source
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Kumar, Sunil, Seema Saini, Vineet Bhatt, Pradeep Bedi, and Kamal Krishan Singh. "Small adiabatic barotropic non-radial modes of oscillations of differentially rotating stars." In INTERNATIONAL SCIENTIFIC AND PRACTICAL CONFERENCE “TECHNOLOGY IN AGRICULTURE, ENERGY AND ECOLOGY” (TAEE2022). AIP Publishing, 2022. http://dx.doi.org/10.1063/5.0104060.

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Shida, Sayaka, Yuichiro Shibata, Kiyoshi Oguri, and Duncan A. Buell. "Implementation of a Barotropic Operator for Ocean Model Simulation using a Reconfigurable Machine." In 2007 International Conference on Field Programmable Logic and Applications. IEEE, 2007. http://dx.doi.org/10.1109/fpl.2007.4380723.

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Pouffary, Benoiˆt, Regiane Fortes Patella, and Jean-Luc Reboud. "Numerical Simulation of 3D Cavitating Flows: Analysis of Cavitation Head Drop in Turbomachinery." In ASME 2005 Fluids Engineering Division Summer Meeting. ASMEDC, 2005. http://dx.doi.org/10.1115/fedsm2005-77356.

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The numerical simulation of cavitating flows in turbomachinery is studied at the Turbomachinery and Cavitation team of LEGI (Grenoble - France) in collaboration with the French space agency (CNES) and the rocket engine division of SNECMA Moteurs. A barotropic state law is proposed to model the cavitation phenomenon and this model has been integrated in the commercial CFD code Fine/TurboTM, developed and commercialized by Numeca International. The numerical aspects of the work are mainly focused on numerical stability and reliability of the algorithm, when introducing large density variations t
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Chang, P. S., and G. K. Egan. "An implementation of a barotropic Numerical Weather Prediction model in the functional language SISAL." In the second ACM SIGPLAN symposium. ACM Press, 1990. http://dx.doi.org/10.1145/99163.99176.

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Hu, Yong, Xiaomeng Huang, Allison H. Baker, et al. "Improving the scalability of the ocean barotropic solver in the community earth system model." In SC15: The International Conference for High Performance Computing, Networking, Storage and Analysis. ACM, 2015. http://dx.doi.org/10.1145/2807591.2807596.

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Reports on the topic "Barotropic models"

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Fulton, Scott R. An Adaptive Multigrid Barotropic Tropical Cyclone Track Model. Defense Technical Information Center, 1999. http://dx.doi.org/10.21236/ada376987.

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Fulton, Scott R., Nicole M. Burgess, and Brittany L. Mitchell. Experiments With a Self-Adaptive Multigrid Barotropic Tropical Cyclone Track Model. Defense Technical Information Center, 1999. http://dx.doi.org/10.21236/ada376800.

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Hu, Miao, and Scott R. Fulton. Comparison of Discretization Accuracy in an Adaptive Multigrid Barotropic Tropical Cyclone Track Model. Defense Technical Information Center, 2000. http://dx.doi.org/10.21236/ada377011.

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Blain, Cheryl Ann. Tidal Elevations in the Yellow and East China Seas from a Data-Assimilative, Barotropic Tidal Model. Defense Technical Information Center, 1997. http://dx.doi.org/10.21236/ada327744.

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