Type
Conference PaperAuthors
Attili, AntonioBisetti, Fabrizio

KAUST Department
Clean Combustion Research CenterMechanical Engineering Program
Physical Science and Engineering (PSE) Division
Reactive Flow Modeling Laboratory (RFML)
Date
2011-12-22Online Publication Date
2011-12-22Print Publication Date
2011-12-22Permanent link to this record
http://hdl.handle.net/10754/554388
Metadata
Show full item recordAbstract
A highly resolved Direct Numerical Simulation of a spatially developing turbulent mixing layer is presented. In the fully developed region, the flow achieves a turbulent Reynolds number Reλ = 250, high enough for a clear separation between large and dissipative scales, so for the presence of an inertial range. Structure functions have been calculated in the self-similar region using velocity time series and Taylor's frozen turbulence hypothesis. The Extended Self-Similarity (ESS) concept has been employed to evaluate relative scaling exponents. A wide range of scales with scaling exponents and intermittency levels equal to homogeneous isotropic turbulence has been identified. Moreover an additional scaling range exists for larger scales; it is characterized by smaller exponents, similar to the values reported in the literature for flows with strong shear.Citation
Structure function scaling in a Reλ = 250 turbulent mixing layer 2011, 318 (4):042001 Journal of Physics: Conference SeriesPublisher
IOP PublishingConference/Event name
13th European Turbulence Conference, ETC13Additional Links
http://stacks.iop.org/1742-6596/318/i=4/a=042001?key=crossref.98eade4edb9144e1ba7e44a0c4192bffae974a485f413a2113503eed53cd6c53
10.1088/1742-6596/318/4/042001