منابع مشابه
Eulerian quadrature-based moment models for dilute polydisperse evaporating sprays
Dilute liquid sprays can be modeled at the mesoscale using a kinetic equation, namely the Williams-Boltzmann equation, containing terms for spatial transport, evaporation and fluid drag. The most common method for simulating the Williams-Boltzmann equation uses Lagrangian particle tracking wherein a finite ensemble of numerical “parcels” provides a statistical estimate of the joint surface area...
متن کاملOn the role of preferential segregation in flame dynamics in polydisperse evaporating sprays
The use of robust and accurate Eulerian/Eulerian formulations in the modeling of reactive two-phase flow would be a major step forward in the framework of turbulent combustion modeling with massively parallel supercomputers. Therefore, the ability of the Eulerian multi-fluid model to capture all stages of turbulent spray combustion has been tested and compared with a usual Lagrangian formulatio...
متن کاملIgnition and Flame Propagation in Dilute Polydisperse Sprays ; Importance of d 32 and <
Suitability of the Sauter mean diameter and the surface-area mean diameter for representing the ignition and combustor behavior of polydisperse sprays is examined. Initial size distributions considered are the Nukiyama-Tanasawa distribution and a bidisperse spray. Two physical situations are analyzed. In the first, the ignition characteristics of a polydisperse spray in the viscinity of a hot w...
متن کاملNumerical strategy for unsteady two-way coupling in polydisperse sprays: application to Solid Rocket Motor instabilities
F. Doisneau1, A. Sibra2, J. Dupays3, A. Murrone4, F. Laurent5, and M. Massot6 DEFA, Département d’Énergétique Fondamentale et Appliquée, ONERA 91120 Palaiseau FRANCE CNRS, UPR 288 “Laboratoire d’Énergétique Moléculaire et Macroscopique, Combustion” ECP, Ecole Centrale Paris, Grande Voie des Vignes 92295 Châtenay-Malabry FRANCE FM, Fédédration de Mathématiques de l’Ecole Centrale Paris, FR CNRS ...
متن کاملTurbulent combustion of polydisperse evaporating sprays with droplet crossing: Eulerian modeling of collisions at finite Knudsen and validation
The accurate simulation of the dynamics of polydisperse sprays in unsteady gaseous flows with large-scale vortical structures is both a crucial issue for industrial applications and a challenge for modeling and scientific computing. In a companion paper, we have shown the capability of the Eulerian multi-fluid model to capture the dynamics and evaporation of such sprays and extended it in order...
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ژورنال
عنوان ژورنال: Review of Scientific Instruments
سال: 1971
ISSN: 0034-6748,1089-7623
DOI: 10.1063/1.1684959