Numerical Simulation of Multi-Scale Two-Phase Flows Using a Hybrid Interface-Resolving Two-Fluid Model (HIRES-TFM)
Dokumenttyp:
Zeitschriftenaufsatz
Autor(en):
Marschall, H.; Hinrichsen, O.
Abstract:
This contribution outlines the coherent and mathematical rigorous derivation of a generalized multi-scale model framework that is based on the Eulerian-Eulerian two-fluid methodology. By conditional volume-averaging (based on the immersed interface concept) and subsequent closure modeling, the two-phase flow features are first divided into an unresolved portion (on average or sub-grid scale) and a resolved portion, and then interpreted on a physical basis leading to constitutive relations for closure. The resulting two-fluid model framework HIRES-TFM (Hybrid Interface-Resolving Two-Fluid Model) exhibits the same basic structure as found for single-phase flow, which results in an inherently stable method and enables us to reuse numerical techniques that have been developed for single-phase problems. Moreover, the conceptual approach is both compatible to the Large Eddy Simulation (LES) framework for turbulence modeling, and is expandable to multi-scale flow scenarios, i.e. dispersed and segregated two-phase flows.
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This contribution outlines the coherent and mathematical rigorous derivation of a generalized multi-scale model framework that is based on the Eulerian-Eulerian two-fluid methodology. By conditional volume-averaging (based on the immersed interface concept) and subsequent closure modeling, the two-phase flow features are first divided into an unresolved portion (on average or sub-grid scale) and a resolved portion, and then interpreted on a physical basis leading to constitutive relations for cl...
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Kongresstitel:
ISI Document Delivery No.: 207RW Times Cited: 0 Cited Reference Count: 38 Marcshall, Holger Hinrichsen, Olaf Center of Smart Interfaces, TU Darmstadt, Germany The first author (HM) gratefully acknowledges research and financial support from the Mathematical Modeling and Analysis group (Prof. Dr. Dieter Bothe), Center of Smart Interfaces, TU Darmstadt, Germany. 0 Soc chemical eng japan Bunkyo ku tokyo