Results 31 to 40 of about 1,585,030 (297)
The Newtonian Limit for Perfect Fluids [PDF]
Communications in Mathematical Physics, 2007 We prove that there exists a class of non-stationary solutions to the Einstein-Euler equations which have a Newtonian limit. The proof of this result is based on a symmetric hyperbolic formulation of the Einstein-Euler equations which contains a singular parameter $\ep = v_T/c$ where $v_T$ is a characteristic velocity scale associated with the fluid ...
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In search of the perfect fluid [PDF]
AIP Conference Proceedings, 2009 4 pages, prepared for the proceedings of CIPANP 09, San Diego, USA, March 26-31 ...
Thomas Schäfer, Marvin L. Marshak
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Frontiers in Astronomy and Space Sciences, 2022 Within the context of Saez-Ballester theory, we explored the interaction of a five-dimensional Bianchi type-I anisotropic cloud string cosmological model Universe with an electromagnetic field. With an electromagnetic field, the energy momentum tensor is
Jagat Daimary, Rajshekhar Roy Baruah
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Chapter 14. The Swedish perfect and periphrasis
, 2021 This paper investigates the apparent near-optionality of the perfect auxiliary ha (‘have’) in Swedish. Restrictions on the near-optionality of ha-omission are typically recognized in the previous literature as lexical or structural. The paper scrutinizes
Fredrik Heinat, Heinat, Fredrik,
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Perfect fluid theory and its extensions [PDF]
Journal of Physics A: Mathematical and General, 2004 We review the canonical theory for perfect fluids, in Eulerian and Lagrangian formulations. The theory is related to a description of extended structures in higher dimensions. Internal symmetry and supersymmetry degrees of freedom are incorporated. Additional miscellaneous subjects that are covered include physical topics concerning quantization, as ...
Jackiw, R. +3 more
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PERFECT FLUID AND SCALAR FIELD IN HIGHER DIMENSION
, 2023 In this study, we examine perfect fluid and scalar field in higher dimensional FRW model. Also, we obtain dynamic solutions, H Hubble parameter, q deceleration parameter and w the state of equation parameter of perfect fluid and scalar field.
E.C. GÜNAY DEMİREL +1 more
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Stationary Spherical Vortices in a Perfect Fluid [PDF]
Proceedings of the National Academy of Sciences, 1972 Necessary conditions are derived for a spherical vortex in a perfect fluid to be stationary in the case when the velocities depend on a single surface harmonic. The motion is indeterminate unless an additional condition is imposed. In the case when this condition is incompressibility, the equations are solved, yielding a class of stationary spherical ...
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Quantum Cosmological Perfect Fluid Models [PDF]
General Relativity and Gravitation, 2002 Perfect fluid Friedmann-Robertson-Walker quantum cosmological models for an arbitrary barotropic equation of state $p = αρ$ are constructed using Schutz's variational formalism. In this approach the notion of time can be recovered. By superposition of stationary states, finite-norm wave-packet solutions to the Wheeler-DeWitt equation are found.
Alvarenga, F. G. +3 more
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Locomotion of Articulated Bodies in a Perfect Fluid [PDF]
Journal of Nonlinear Science, 2005 This paper is concerned with modeling the dynamics of N articulated solid bodies submerged in an ideal fluid. The model is used to analyze the locomotion of aquatic animals due to the coupling between their shape changes and the fluid dynamics in their environment. The equations of motion are obtained by making use of a two-stage reduction process
Eva Kanso +3 more
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Similarity of Solutions of Non Conformally Perfect Fluid Models of Embedding Class One [PDF]
Engineering and Technology Journal, 2013 The Study of similarity Transformation Method has played a remarkable role of dealing with many immediate theoretical and practical applications in our life problems, such as physical and engineering problems [6].This method find the solution for the ...
Dhuha Majeed Salih
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