Unsteady drag consideration in stochastic Eulerian-Lagrangian formulation of two-phase flow

Keh Chin Chang, Jinn Cherng Yang

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

The unsteady effect of drag coefficient in the stochastic Eulerian-Lagrangian computation of a two-phase, turbulent, planar mixing layer flow of droplets-in-gas type is examined. It is found that the use of an unsteady drag coefficient in modeling two-phase turbulent flows with the stochastic Eulerian-Lagrangian formulation is necessary to obtain complete information of the dispersed-phase turbulence characteristics. It is shown that the use of the quasisteady drag coefficient, which is mostly adopted in two-phase turbulent flow computations, does not cause too much deviation in the determination of mean quantities of the droplet velocity through use of the ensemble-averaging method weighting with the probability density function of the carrier phase.

Original languageEnglish
Pages (from-to)434-442
Number of pages9
JournalAIAA journal
Volume37
Issue number4
DOIs
Publication statusPublished - 1999 Apr

All Science Journal Classification (ASJC) codes

  • Aerospace Engineering

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