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Graf Isolan
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Untersuchte Arbeit:
Seite: 104, Zeilen: 1-10
Quelle: Fan et al 2004
Seite(n): 9, Zeilen: left col. 21-35
5.4 Eulerian Multi-Fluid Model

In the Eulerian multi-fluid model, the gas and droplet phases are treated as interpenetrating continua in an Eulerian framework. The gas phase is considered as the primary phase, whereas the droplet phases are considered as dispersed or secondary phases. The gas and droplet phases are characterized by volume fractions, and by definition, the volume fractions of all phases must sum to unity:


\alpha_g + \sum_{q=1}^N \alpha_q =1 \quad
(5.16)

where αg is the gas volume fraction, αq is the volume fraction of the qth droplet phase, and N is the total number of droplet phases.

2.1. Multi-fluid model for gas–solid flow

The multi-fluid model is an extension of the two fluid model for gas–solid flows [27]. In this model, the gas and solid phases are treated as inter-penetrating continua in an Eulerian framework. The gas phase is considered as the primary phase, whereas the solid phases are considered as secondary or dispersed phases. Each solid phase is characterized by a specific diameter, density and other properties. The primary and dispersed phases are characterized by volume fractions, and by definition, the volume fractions of all phases must sum to unity:


\epsilon_g + \sum_{\alpha=1}^N \epsilon_{s\alpha} =1 \quad
(1)

where εg is the gas volume fraction, ε is the volume fraction of αth solid phase, and N is the total number of solid phases.

Anmerkungen

Nothing has been marked as a citation. "Solid phase" has been substituted by "droplet phase". Otherwise the text has been taken verbatim.

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