Perfect Fluid
Mostrando 13-24 de 42 artigos, teses e dissertações.
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13. Proposta de sistematização das questões de ordem pública processual e substancial
Issues of public order have always been relevant to us due to the serious consequences they generate if violated.Because there is no legal regime previously determined by law, we sought to systemize public order issues based on that existing in the legal system in order to understand their nature and adequately present them, define them and understand the tr
Publicado em: 2007
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14. Interior problem in a ponsymmetric theory of gravitation
The field equations of a previous metric nonsymmetric theory of gravitation are considered for the interior of a static spherically symmetric perfect fluid with a view to a study of stellar equilibrium. The equations are put into a form of four first-order differential equations which are ready for numerical integration.
Brazilian Journal of Physics. Publicado em: 2006-06
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15. Attractors in dark energy models with Born-Infeld scalar field
We derive, in the large scale limit, analytical solutions for a dark energy model described by the Born-Infeld field plus a perfect fluid, both for homogeneous background and first order perturbations. These analytical results are compared with numerical solutions in a model with radiation, pressureless matter and the field. We investigate the non-adiabatic
Brazilian Journal of Physics. Publicado em: 2005-12
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16. Solitons in nucleon-nucleus collisions / Solitons em colisões núcleon-núcleo
Assuming that the nucleus can be treated as a perfect fluid we study the conditions for the formation and propagation of Korteweg-de Vries (KdV) solitons in nuclear matter. The existence of these solitons depends on the nuclear equation of state, which, in its turn, depends on the underlying microscopic theory of the nucleon-nucleon interaction and also on t
Publicado em: 2005
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17. Modelling of the dispersed air flotation process applied to dairy wastewater treatment
The aim of this work was to develop a mathematical model for a continuously operating flotation tank to provide the scale-up and optimization of the separation system. The fluid dynamic of the tank was assumed to be a perfect mixture and the flotation kinetics to be a first-order reaction, as suggested by the batch operation. The experiments were carried out
Brazilian Journal of Chemical Engineering. Publicado em: 2004-06
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18. Stationary Spherical Vortices in a Perfect Fluid
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 vortice
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19. ON THE MOTION OF A SPHERE IN A PERFECT FLUID, WITH APPLICATION TO LIQUID HELIUM*
Momentum relationships involved in the motion of a sphere through a perfect fluid are considered. The mechanism, by which the momentum given to a sphere by an external impulsive force is transferred to the container as a whole, is traced through in some detail, and energy and momentum relationships are discussed. Comparison is made with a 3He atom or a roton
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20. Stationary spherical vortices in a perfect fluid
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21. Microscopic analysis of synovial fluid--the perfect diagnostic test?
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22. ON THE FLOW OF A PERFECT FLUID THROUGH A POLYGONAL NOZZLE. I*
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23. ON THE FLOW OF A PERFECT FLUID THROUGH A POLYGONAL NOZZLE. II*
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24. RELATIVISTIC SURFACE DYNAMICS OF AN ISOLATED WORLD TUBE OF PERFECT FLUID