TY - JOUR
T1 - Velocity-vorticity patterns in turbulent flow
AU - Pelz, Richard B.
AU - Yakhot, Victor
AU - Orszag, Steven A.
AU - Shtilman, Leonid
AU - Levich, Evgeny
PY - 1985
Y1 - 1985
N2 - Direct numerical simulation of the Navier-Stokes equations is used for the investigation of local helicity fluctuations in plane Poiseuille (channel) and Taylor-Green vortex flows. It is shown that in regions of high dissipation, the cosine of the angle between velocity and vorticity is evenly distributed; in regions of low dissipation, the velocity and vorticity vectors have a tendency to align. It is also shown that near the central part of the channel, velocity and vorticity vectors have a strong tendency to be aligned, while in the buffer region, all angles are nearly equally probable.
AB - Direct numerical simulation of the Navier-Stokes equations is used for the investigation of local helicity fluctuations in plane Poiseuille (channel) and Taylor-Green vortex flows. It is shown that in regions of high dissipation, the cosine of the angle between velocity and vorticity is evenly distributed; in regions of low dissipation, the velocity and vorticity vectors have a tendency to align. It is also shown that near the central part of the channel, velocity and vorticity vectors have a strong tendency to be aligned, while in the buffer region, all angles are nearly equally probable.
UR - http://www.scopus.com/inward/record.url?scp=33747377540&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.54.2505
DO - 10.1103/PhysRevLett.54.2505
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AN - SCOPUS:33747377540
VL - 54
SP - 2505
EP - 2508
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 23
ER -