Zobrazeno 1 - 10
of 21
pro vyhledávání: '"E. J. Caramana"'
Autor:
Raphaël Loubère, E. J. Caramana, P.P. Whalen, Mikhail Shashkov, Amy L. Bauer, Donald E. Burton
Publikováno v:
Journal of Computational Physics. 218:572-593
This work explores the somewhat subtle meaning and consequences of the salient properties of the discrete, compatible formulation of Lagrangian hydrodynamics. In particular, since this formulation preserves total energy to roundoff error, the amount
Autor:
Raphaël Loubère, E. J. Caramana
Publikováno v:
Journal of Computational Physics. 215:385-391
The bane of Lagrangian hydrodynamics calculations in multi-dimensions is the appearance of vorticity that causes tangling of the mesh and consequent run termination. This vorticity may be numerical or physical in origin, and is in addition to the spu
Autor:
Raphaël Loubère, E. J. Caramana
Publikováno v:
Journal of Computational Physics. 216:1-18
This study presents the force and mass discretization of exceptional points in the compatible formulation of Lagrangian hydrodynamics. It concludes a series of papers that develop various aspects of the theoretical exposition and the operational impl
Autor:
E. J. Caramana
Publikováno v:
Journal of Computational Physics. 166:173-185
Publikováno v:
Journal of Computational Physics. 157:89-119
This work presents a numerical algorithm for the solution of fluid dynamics problems with moderate to high speed flow in three dimensions. Cartesian geometry is chosen owing to the fact that in this coordinate system no curvature terms are present th
Publikováno v:
Journal of Computational Physics. 146:227-262
The principal goal of all numerical algorithms is to represent as faithfully and accurately as possible the underlying continuum equations to which a numerical solution is sought. However, in the transformation of the equations of fluid dynamics into
Publikováno v:
Journal of Computational Physics. 144:70-97
In this paper we present a new formulation of the artificial viscosity concept. Physical arguments for the origins of this term are given and a set of criteria that any proper functional form of the artificial viscosity should satisfy is enumerated.
Autor:
Mikhail Shashkov, E. J. Caramana
Publikováno v:
Journal of Computational Physics. 142:521-561
The bane of Lagrangian hydrodynamics calculations is the premature breakdown of grid topology that results in severe degradation of accuracy and run termination often long before the assumption of a Lagrangian zonal mass has ceased to be valid. At sh
Autor:
E. J. Caramana, P.P. Whalen
Publikováno v:
Journal of Computational Physics. 141:174-198
We investigate the problem of perfectly preserving a symmetry associated naturally with one coordinate system when calculated in a different coordinate system. This allows a much wider range of problems that may be viewed as perturbations of the give
Publikováno v:
Applied optics. 30(21)
Chemically generated CO(2) laser pulses at 10.6 microm have been used to clear a 5-cm diameter hole through a stratus-like cloud in a laboratory cloud chamber. The results show that 100% clearing can be achieved. The mechanism is shown to be droplet