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多相流动科学与技术
SJR: 0.183 SNIP: 0.483 CiteScore™: 0.5

ISSN 打印: 0276-1459
ISSN 在线: 1943-6181

多相流动科学与技术

DOI: 10.1615/MultScienTechn.v15.i1-4.110
pages 145-149

RESEARCH NEEDS IN MULTIPHASE FLOW: DILUTE PARTICLE-LADEN GAS FLOWS

John K. Eaton
Dept. of Mechanical Engineering Stanford University 488 Panama Mall Stanford, CA 94305 USA

ABSTRACT

This contribution addresses open research questions related to modeling of dilute particle-laden flows. Most current modeling approaches either directly or implicitly assume that the particles are much smaller than the Kolmogorov scale and have small Reynolds numbers. These assumptions are invalid in many real systems, and they lead to erroneous predictions of particle dispersion and turbulence modification. Large eddy simulations are used increasingly to predict particle-laden flows, but there are many open issues including a lack of understanding of the two-way interaction of particles with sub-grid scale turbulence. Fully resolved simulations and experiments including significant particle parameter variation in fixed geometry are needed to advance the field.


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