scholarly journals Accelerated self-constricted electron streams in plasma

1959 ◽  
Vol 249 (1258) ◽  
pp. 318-334 ◽  
Keyword(s):  
Electric Fields ◽  
Numerical Solutions ◽  
Fluid Model ◽  
Electron Flow ◽  
Electron Stream ◽  
Ion Collisions ◽  
Two Fluid Model ◽  
Analytical Expressions ◽  
Positive Ion ◽  
Two Fluid

The mechanism is described of radial oscillations in a neutralized cylindrical electron stream in an accelerating electric field. The analysis is based on the two-fluid model of plasma. Analytical expressions for small amplitude oscillations and numerical solutions for large amplitudes are derived. It is found, when electron-positive ion collisions are taken into account, that for dense streams in low electric fields the radial oscillations (pinch oscillations) can destroy the streaming character of the electron flow and thus prevent its acceleration.

Equilibration in intermediate-energy heavy-ion collisions within a relativistic mean-field two-fluid model

1991 ◽  
Vol 340 (4) ◽  
pp. 385-391 ◽  
Author(s):  
Y. B. Ivanov ◽  
V. N. Russkikh ◽  
M. Sch�nhofen ◽  
M. Cubero ◽  
B. L. Friman ◽  
...  
Keyword(s):  
Heavy Ion Collisions ◽  
Fluid Model ◽  
Mean Field ◽  
Heavy Ion ◽  
Intermediate Energy ◽  
Relativistic Mean Field ◽  
Ion Collisions ◽  
Two Fluid Model ◽  
Two Fluid

A Characteristics-Based Approach to the Numerical Solution of the Two-Fluid Model

2003 ◽  
Author(s):  
Robert Nourgaliev ◽  
Nam Dinh ◽  
Theo Theofanous
Keyword(s):  
Numerical Solutions ◽  
Fluid Model ◽  
Main Idea ◽  
Effective Field ◽  
Field Equations ◽  
Two Phase ◽  
Widespread Application ◽  
Formidable Challenge ◽  
Two Fluid Model ◽  
Two Fluid

This paper is concerned with numerical solutions of the two-fluid models of two-phase flow. The two-fluid modeling approach is based on the effective-field description of inter-penetrating continua and uses constitutive laws to account for the inter-field interactions. The effective-field balance equations are derived by a homogenization procedure and known to be non-hyperbolic. Despite their importance and widespread application, predictions by such models have been hampered by numerical pitfalls manifested in the formidable challenge to obtain convergent numerical solutions under computational grid refinement. At the root of the problem is the absence of hyperbolicity in the field equations and the resulting ill-posedness. The aim of the present work is to develop a high-order-accurate numerical scheme that is not subject to such limitations. The main idea is to separate conservative and non-conservative parts, by implementing the latter as part of the source term. The conservative part, being effectively hyperbolic, is treated by a characteristics-based method. The scheme performance is examined on a compressible-incompressible two-fluid model. Convergence of numerical solutions to the analytical one is demonstrated on a benchmark (water faucet) problem.

scholarly journals Natural modes of the two-fluid model of two-phase flow

2021 ◽  
Vol 33 (3) ◽  
pp. 033324
Author(s):  
Alejandro Clausse ◽  
Martín López de Bertodano
Keyword(s):  
Two Phase Flow ◽  
Fluid Model ◽  
Phase Flow ◽  
Two Phase ◽  
Natural Modes ◽  
Two Fluid Model ◽  
Two Fluid

Self-consistent hydrodynamic two-fluid model of vortex plasma

2021 ◽  
Vol 33 (3) ◽  
pp. 037116
Author(s):  
Victor L. Mironov
Keyword(s):  
Fluid Model ◽  
Self Consistent ◽  
Two Fluid Model ◽  
Two Fluid
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