Continuum modeling of two-phase flows

作者：J. Bataille, J. Kestin · 年份：1981 · DOI：10.2172/893478 · 被引用次数：3 · 研究领域：Rheology and Fluid Dynamics Studies、Lattice Boltzmann Simulation Studies、Fluid Dynamics and Mixing

Continuum modeling of two-phase flows can essentially be achieved in two ways. The first approach, the so-called continuum theory of mixtures, ignores the details of the flow occurring on the microscopic level, while the second one is the result of some averaging procedure. Although they both lead, as expected, to the same set of basic equations, they differ strongly in their spirit when closure equations have to be found. In the present report, we have attempted to give a brief critical review of both approaches, to compare them and to discuss some of the major difficulties which arise. It is shown that the application of the continuum theory of mixtures is, in most cases, questionable and that the only appropriate way of finding closure equations, besides correlating experimental results, consists in a useful investigation of the microscopic flow pattern associated with an adequate averaging technique.