Coherent structures and secondary motions in open duct flow
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Beschreibung
This book addresses the turbulence-driven mean secondary motions in straight open duct flow with rectangular cross-section. Despite its weak intensity, the secondary flow influences the primary velocity distribution significantly. Coherent structure analysis showed that the secondary flow is the statistical footprint of quasi-streamwise vortices, and the unique mean flow pattern is a consequence of a vortex sorting mechanism that is only effective in the vicinity of free surface.
This book addresses the turbulence-driven mean secondary motions in straight open duct flow with rectangular cross-section. Despite its weak intensity, the secondary flow influences the primary velocity distribution significantly. Coherent structure analysis showed that the secondary flow is the statistical footprint of quasi-streamwise vortices, and the unique mean flow pattern is a consequence of a vortex sorting mechanism that is only effective in the vicinity of free surface.
Autor*in
Yoshiyuki Sakai
Themen in »Coherent structures and secondary motions in open duct flow«
Offene Kanalstroemung Kohaerente Strukturen Open duct flow Secondary flow Direkte Numerische Simulation Coherent structures Sekundaerstroemung Direct Numerical Simulation