Momentum Flux
Mostrando 13-18 de 18 artigos, teses e dissertações.
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13. Theoretical analysis of formation and sustainment methods for compact toroids
Recent theoretical studies on the use of neutral beams (NB), rotating magnetic fields (RMF) and helicity injection (HI) to form and sustain compact toroids are reported. A Monte Carlo code was employed to study NB injection in Field Reversed Configurations (FRC) and Spheromaks. The code calculates the ionization of the neutral particles and follows the exact
Brazilian Journal of Physics. Publicado em: 2004-12
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14. Modelo computacional dinamico lagrangeano - euleriano para escoamento bifasico em poços de petroleo
A new computational model is introduced for describing long-term transient aspects of two-phase vertical flow, focusing the convection phenomenon only. The model uses the concepts ofthe drift-flux model along with specific constitutive relations for bubble, slug and annular flow. The motion of gas is treated with Lagrangean cells, whereas mass and momentum c
Publicado em: 1996
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15. Algoritmo de diferenças finitas com variaveis primitivas em convencção natural, para placa plana vertical, aplicado a agua e ao ar com propriedades variaveis
The aim of the work is to analyse the behavior of the fluids water and air in laminar steady-state which natural convection flow around a vertical flat plate, considering both the uniform temperature and uniform heat flux cases and the variation of the properties with the temperature. The Finite Difference Method with the primitives variables is applied usin
Publicado em: 1995
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16. Estudo numerico de um escoamento bifasico, laminar : padrões anular e estratificado
A numerical solution of the two-dimensional momentum equations for a two-phase, Newtonian fluid(s), steady, laminar, axial, fully developed flow in a long, horizontal, circular pipe is conducted. The annular and stratified patterns are considered by assuming the interface between the phases to be either circular-cylindrical or an arc-segment of a cylindrical
Publicado em: 1995
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17. Outlining social physics for modern societies—locating culture, economics, and politics: The Enlightenment reconsidered
A groundwork is laid for a formulation of the modern human social system as a field continuum. As in a simple material physical field, the independent implied relationships of materials or processes in flux have to be based on local conservations of mass, energy, and momentum. In complex fields, the transport fluctuations of momentum are transformed into act
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18. Regional alveolar pressure during periodic flow. Dual manifestations of gas inertia.
We measured pressure excursions at the airway opening and at the alveoli (PA) as well as measured the regional distribution of PA during forced oscillations of six excised dog lungs while frequency (f[2-32 Hz]), tidal volume (VT [5-80 ml]), and mean transpulmonary pressure (PL [25, 10, and 6 cm H2O]) were varied. PA's were measured in four alveolar capsules