文档介绍：ELSEVIER
Modeling of Dynamics, Heat Transfer,
bustion in Two-Phase
Turbulent Flows: 1. Isothermal Flows
L. I. Zaichik • This paper presents a review of authors' collective works in the field of
V. A. Pershukov two-phase flow modeling done in the past few decades. The paper is aimed
at the construction of mathematical models for simulation of particle-laden
M. V. Kozelev turbulent flows. A ic equation was obtained for the probability density
A. A. Vinberg function (PDF) of the particle velocity distribution in turbulent flows. The
Institute for High Temperatures of the proposed ic equation describes both the interaction of particles with
Russian Academy of Sciences, turbulent eddies of the carrier phase and particle-particle collisions. This
Moscow, Russia PDF equation is used for the derivation of different schemes describing
turbulent momentum transfer in the dispersed particle phase. The turbu-
lent characteristics of the gaseous phase are calculated on the basis of the
k-e turbulence model with a modulation effect of particles on the
turbulence.
The constructed models have been applied to the calculation of various
two-phase gas-particle turbulent flows in jets and channels as well as
particle deposition in tubes and separators. For validating the theoretical
and numerical results, a wide range parisons with experimental data
from Russian and foreign sources has been done. © Elsevier Science Inc.,
1997
Keywords: mathematical model, ic equation, turbulence, particle,
gas, probability density function, modulation effect, jet, channel,
deposition, numerical scheme
INTRODUCTION because of the decreasing time-step size for solving the
equation of motion, which results in very puta-
The known methods for the prediction of two-phase tur- tional times. Moreover, the coupling between the phases
bulent flows can be subdivided into two groups. The first at high loading creates a problem in reaching a c