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Dokumenttyp:
Zeitschriftenaufsatz 
Autor(en):
Rasthofer, U.; Burton, G.C.; Wall, W.A.; Gravemeier, V. 
Titel:
Multifractal subgrid-scale modeling within a variational multiscale method for large-eddy simulation of passive-scalar mixing in turbulent flow at low and high Schmidt numbers 
Abstract:
Multifractal subgrid-scale modeling embedded into a variational multiscale method is proposed for large-eddy simulation of passive-scalar mixing in turbulent incompressible flow. In this subgrid-scale modeling approach, subgrid-scale velocity and scalar field are directly approximated by a multifractal reconstruction process replicating the actual physics of turbulent flows. Problems from low to high Schmidt numbers (i.e., Sc ≈ 1 to Sc » 1) are considered in this work. Starting from precedin...    »
 
Stichworte:
passive-scalar mixing, large-eddy simulation, multifractal subgrid-scale modeling, variational multiscale method, low and high Schmidt number, turbulent channel flow 
Dewey Dezimalklassifikation:
620 Ingenieurwissenschaften 
Zeitschriftentitel:
Physics of Fluids 
Jahr:
2014 
Band / Volume:
26 
Heft / Issue:
Nachgewiesen in:
Web of Science 
Reviewed:
ja 
Sprache:
en 
Status:
Verlagsversion / published 
Semester:
SS 14