Precipitation Moisture Sources of Ethiopian River Basins and Their Role During Drought Conditions
Frontiers in Earth Science, 2022 In this study, we identified and investigated the annual climatological moisture sources for the Ethiopian river basins during 1980–2018. First, according to cluster analysis, the 12 river basins of this country were grouped into four regions: northeast (
Milica Stojanovic +6 more
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Nonconservative Lagrangian mechanics: a generalized function approach [PDF]
Journal of Physics A: Mathematical and General, 2003 To be published in Journal of Physics A: Mathematical and General, IOP Publishing Ltd.
Dreisigmeyer, David W., Young, Peter M.
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Competing Lagrangians for incompressible and compressible viscous flow [PDF]
Royal Society Open Science, 2019 A recently proposed variational principle with a discontinuous Lagrangian for viscous flow is reinterpreted against the background of stochastic variational descriptions of dissipative systems, underpinning its physical basis from a different viewpoint ...
F. Marner +3 more
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The HyperCASL algorithm: A new approach to the numerical simulation of geophysical flows [PDF]
, 2009 We describe a major extension to the Contour-Advective Semi-Lagrangian (CASL) algorithm (Dritschel & Ambaum 1997, 2006). The extension, called ‘HyperCASL’ (HCASL), uses Lagrangian advection of material potential vorticity contours like CASL, but a Vortex-
Fontane, Jérôme +4 more
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Dissipative solitons with a Lagrangian approach [PDF]
Optical Fiber Technology, 2007 We apply Lagrangian techniques to dissipative systems described by the complex Ginzburg–Landau equation (CGLE) that is used for modeling passively mode-locked fiber lasers and all-optical soliton transmission lines. In particular, using Lagrangian equations, we re-derive the known exact solutions of the CGLE.
Ankiewicz, Adrian +2 more
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Geometric Discretization of Lagrangian Mechanics and Field Theories [PDF]
, 2009 This thesis presents a unified framework for geometric discretization of highly oscillatory mechanics and classical field theories, based on Lagrangian variational principles and discrete differential forms. For highly oscillatory problems in mechanics,
Stern, Ari Joshua
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Energy and Force Stepping Integrators in Lagrangian Mechanics [PDF]
, 2011 The overarching goal of this thesis is to develop new numerical time integration schemes for Lagrangian mechanics that better cope with the challenges of understanding the dynamic behavior of materials.
Gonzalez, Marcial
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The Fundamental Lepage Form in Two Independent Variables: A Generalization Using Order-Reducibility
Mathematics, 2022 A second-order generalization of the fundamental Lepage form of geometric calculus of variations over fibered manifolds with 2-dimensional base is described by means of insisting on (i) an equivalence relation “Lepage differential 2-form is closed if and
Zbyněk Urban, Jana Volná
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Lagrangian Averaging, Nonlinear Waves, and Shock Regularization [PDF]
, 2005 In this thesis, we explore various models for the flow of a compressible fluid as well as model equations for shock formation, one of the main features of compressible fluid flows.
Bhat, Harish Subrahmanya
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Updated Lagrangian for Compressible Hyperelastic Material with Frictionless Contact
Applied Mechanics, 2022 The Updated Lagrangian method for nonlinear elasticity with contact is presented. First, we describe the Total Lagrangian for a compressible Neo-Hookean material.
Cornel Marius Murea
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