Mixing efficiency across Rayleigh-Taylor and Richtmeyer-Meshkov fronts
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Cita com:
hdl:2117/28398
Tipus de documentArticle
Data publicació2015-06-03
EditorWorld Scientific Publishing
Condicions d'accésAccés obert
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continguts d'aquesta obra estan subjectes a la llicència de Creative Commons
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Reconeixement-NoComercial-SenseObraDerivada 3.0 Espanya
Abstract
Mixing generated by gravitational acceleration and the role of local turbulence measured through
multifractal methods is examined in numerical experiments of Rayleigh-Taylor and Richtmyer-Meshkov driven
front occurring at density interfaces. The global advance of the fronts is compared with laboratory experiments
and Nusselt and Sherwood numbers are calculated in both large eddy simulation (LES) and kinematic simulation
KS models. In this experimental method, the mixing processes are generated by the evolution of a discrete set of forced
turbulent plumes. We describe the corresponding qualitative results and the quantitative conclusions based on measures of the
density field and of the height of the fluid layers. We present an experimental analysis to characterize the partial mixing process.
The conclusions of this analysis are related to the mixing efficiency and the height of the final mixed layer as functions
of the Atwood number, which ranges from 9.8×10-3 to 1.34×10-1
CitacióRedondo, J. [et al.]. Mixing efficiency across Rayleigh-Taylor and Richtmeyer-Meshkov fronts. "Open Journal of Fluid Dynamics", 03 Juny 2015, vol. 5, p. 145-150.
ISSN2165-3852
Versió de l'editorhttp://www.scirp.org/journal/ojfd/
Col·leccions
Fitxers | Descripció | Mida | Format | Visualitza |
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OJFD_20150603151220.pdf | pdf file | 605,7Kb | Visualitza/Obre |