Grid-averaged Lagrangian equations of dispersed phase in dilute two-phase flow

Keh Chin Chang, Jinn Cherng Yang, Muh Rong Wang

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


A set of grid-averaged Lagrangian transport equations of the dispersed-phase turbulence kinetic energy <upik′upik′> and the turbulence modulation quantity <u′iupik′> is derived and demonstrated through a well-defined test problem of droplet-loading mixing layer. It is shown that accurate predictions of the turbulence kinetic energy of the droplets can be achieved by solving from this set of grid-averaged Lagrangian equations with significantly less computational droplets than those of a purely stochastic model. The information of the turbulence modulation quantity, which is solved from the grid-averaged Lagrangian transport equation of <u′iupik′>, can also be used to evaluate accurately the source term accounting for the two-phase interaction in the turbulence kinetic energy k transport equation of the carrier fluid, which is important for determining the turbulence characteristics of the carrier fluid.

Original languageEnglish
Pages (from-to)1292-1303
Number of pages12
JournalAIAA journal
Issue number7
Publication statusPublished - 2003 Jul

All Science Journal Classification (ASJC) codes

  • Aerospace Engineering


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