Journal
FLOW TURBULENCE AND COMBUSTION
Volume 86, Issue 2, Pages 263-293Publisher
SPRINGER
DOI: 10.1007/s10494-010-9316-x
Keywords
Turbulent channel flow; Kinematic simulation; Streaks
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Funding
- EPSRC
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We detail a new method of generating kinematic simulation fields in a channel. We employ a new decomposition for kinematic simulation which ensures that the boundary conditions are automatically satisfied while preserving incompressibility. We impose statistics up to second order, including the Reynolds shear-stress and one-dimensional spectral densities. We observe streak-like structures kinematically similar to those observed in the laboratory, with a similar scaling with the wall-normal distance. We explain the appearance and scaling of the streak-like structures in terms of the two-dimensional spectra imposed on the fields.
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