A dual-scale approach for modeling turbulent liquid/gas phase interfaces

Dominic Kedelty, James Uglietta, Marcus Herrmann

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

Advances to a dual-scale modeling approach [1] are presented to describe turbulent phase interface dynamics in a large-eddy-simulation-type spatial filtering context. Spatial filtering of the governing equations introduces several sub-filter terms that require modeling. Instead of developing individual closure-models for the terms associated with the interface, the dual-scale approach uses an exact closure by explicitly filtering a fully resolved realization of the phase interface. This resolved realization is maintained on a high-resolution over-set mesh. The advection equation for the phase interface on this DNS scale requires a model for the fully resolved interface advection velocity. This velocity is the sum of the filter scale LES velocity, available from the LES flow solver, and the sub-filter velocity fluctuation. The sub-filter velocity fluctuation is due to sub-filter turbulent eddies, reconstructed using a local fractal interpolation technique [2]. Results of the dual-scale model are compared to recent DNS of unit density and viscosity contrast interfaces in homogeneous isotropic turbulence without surface tension [3].

Original languageEnglish (US)
Title of host publicationERCOFTAC Series
PublisherSpringer
Pages257-264
Number of pages8
DOIs
StatePublished - Jan 1 2019

Publication series

NameERCOFTAC Series
Volume26
ISSN (Print)1382-4309
ISSN (Electronic)2215-1826

Fingerprint

Phase interfaces
Gases
Liquid
Filter
Liquids
Spatial Filtering
Modeling
Advection
Closure
Fluctuations
Interface Dynamics
Advection Equation
Large Eddy Simulation
Large eddy simulation
Term
Surface Tension
Fractals
Surface tension
Turbulence
Governing equation

ASJC Scopus subject areas

  • Fluid Flow and Transfer Processes
  • Computational Mathematics

Cite this

Kedelty, D., Uglietta, J., & Herrmann, M. (2019). A dual-scale approach for modeling turbulent liquid/gas phase interfaces. In ERCOFTAC Series (pp. 257-264). (ERCOFTAC Series; Vol. 26). Springer. https://doi.org/10.1007/978-3-030-12547-9_27

A dual-scale approach for modeling turbulent liquid/gas phase interfaces. / Kedelty, Dominic; Uglietta, James; Herrmann, Marcus.

ERCOFTAC Series. Springer, 2019. p. 257-264 (ERCOFTAC Series; Vol. 26).

Research output: Chapter in Book/Report/Conference proceedingChapter

Kedelty, D, Uglietta, J & Herrmann, M 2019, A dual-scale approach for modeling turbulent liquid/gas phase interfaces. in ERCOFTAC Series. ERCOFTAC Series, vol. 26, Springer, pp. 257-264. https://doi.org/10.1007/978-3-030-12547-9_27
Kedelty D, Uglietta J, Herrmann M. A dual-scale approach for modeling turbulent liquid/gas phase interfaces. In ERCOFTAC Series. Springer. 2019. p. 257-264. (ERCOFTAC Series). https://doi.org/10.1007/978-3-030-12547-9_27
Kedelty, Dominic ; Uglietta, James ; Herrmann, Marcus. / A dual-scale approach for modeling turbulent liquid/gas phase interfaces. ERCOFTAC Series. Springer, 2019. pp. 257-264 (ERCOFTAC Series).
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