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Detection and potential early warning of catastrophic flow events with regional seismic networks
Science, 2021Description Far away landslide detection A mass wasting and flood event on 7 February 2021 in Uttarakhand, India, killed more than 200 people and damaged two hydropower plants. Cook et al.
K. Cook +13 more
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Archive for Rational Mechanics and Analysis, 2018
We are concerned with geometric properties of transonic shocks as free boundaries in two-dimensional self-similar coordinates for compressible fluid flows, which are not only important for the understanding of geometric structure and stability of fluid ...
Gui-Qiang G. Chen, M. Feldman, Wei Xiang
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We are concerned with geometric properties of transonic shocks as free boundaries in two-dimensional self-similar coordinates for compressible fluid flows, which are not only important for the understanding of geometric structure and stability of fluid ...
Gui-Qiang G. Chen, M. Feldman, Wei Xiang
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International Journal of Offshore and Polar Engineering, 2018
This paper presents a two-dimensional, one-way coupling methodology between the quasi-arbitrary Lagrange–Euler finite element method (QALE-FEM) nonlinear potential flow solver and the incompressible smoothed particle hydrodynamics (ISPH) Navier-Stokes ...
G. Fourtakas +5 more
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This paper presents a two-dimensional, one-way coupling methodology between the quasi-arbitrary Lagrange–Euler finite element method (QALE-FEM) nonlinear potential flow solver and the incompressible smoothed particle hydrodynamics (ISPH) Navier-Stokes ...
G. Fourtakas +5 more
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2001
Abstract The study of an ideal (perfect) fluid-’dry water’, as Richard P Feynman refers to it in the Feynman Lectures in Physics-is a crucial part of fluid dynamics. In the mechanics of solids, the laws of motion can be expressed, in the absence of friction, in terms of conservation laws.
Etienne Guyon +3 more
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Abstract The study of an ideal (perfect) fluid-’dry water’, as Richard P Feynman refers to it in the Feynman Lectures in Physics-is a crucial part of fluid dynamics. In the mechanics of solids, the laws of motion can be expressed, in the absence of friction, in terms of conservation laws.
Etienne Guyon +3 more
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Flows, Hierarchies, Potentials
Environment and Planning A: Economy and Space, 1981This work deals with the analysis of interregional flows. The central idea is the decomposition of the origin–destination flow matrix into the additive weighted sum of basic matrices. Each basic matrix represents an extremal flow which optimizes some objective function corresponding to some extremal tendency acting in the real flow.
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π0: A Vision-Language-Action Flow Model for General Robot Control
arXiv.orgRobot learning holds tremendous promise to unlock the full potential of flexible, general, and dexterous robot systems, as well as to address some of the deepest questions in artificial intelligence.
Kevin Black +23 more
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The Physics of Fluids, 1964
An investigation is made of some questions pertaining to the stability of potential flow. A formalism due to Eckart is adapted to obtain equations for the perturbations of a known steady potential flow, in a coordinate system defined by the potential function and the stream function.
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An investigation is made of some questions pertaining to the stability of potential flow. A formalism due to Eckart is adapted to obtain equations for the perturbations of a known steady potential flow, in a coordinate system defined by the potential function and the stream function.
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2019
This chapter presents the time-dependent three-dimensional equation governing the evolution and the steady state compressible potential associated with the irrotational flow of compressible fluids. Some particular cases of the complete equations are presented, followed by a classification of Partial Differential Equations.
José Pontes +2 more
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This chapter presents the time-dependent three-dimensional equation governing the evolution and the steady state compressible potential associated with the irrotational flow of compressible fluids. Some particular cases of the complete equations are presented, followed by a classification of Partial Differential Equations.
José Pontes +2 more
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Non-isentropic potential formulation for transonic flows
21st Aerospace Sciences Meeting, 1983A potential equation for nonisentropic transonic flows is formulated. This procedure captures shock waves with Rankine-Hugoniot strengths, but retains the simplicity of the traditional potential equation. Numerical computations are presented that verify the efficiency of the present procedure. It is also shown that Crocco theorem [\textit{L. Crocco}, Z.
Klopfer, Goetz H., Nixon, David
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Journal of Fluid Mechanics, 2003
Potential flows ${\bm u} = {\bm\nabla} \phi$ are solutions of the Navier–Stokes equations for viscous incompressible fluids for which the vorticity is identically zero. The viscous term $\mu \nabla^2 {\bm u} = \mu{\bm \nabla}\nabla^2\phi$ vanishes, but the viscous contribution to the stress in an incompressible fluid (Stokes 1850) does not vanish in ...
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Potential flows ${\bm u} = {\bm\nabla} \phi$ are solutions of the Navier–Stokes equations for viscous incompressible fluids for which the vorticity is identically zero. The viscous term $\mu \nabla^2 {\bm u} = \mu{\bm \nabla}\nabla^2\phi$ vanishes, but the viscous contribution to the stress in an incompressible fluid (Stokes 1850) does not vanish in ...
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