논문
Helicity and geometric nature of particle trajectories in homogeneous isotropic turbulence
- 저자최연택
- 학술지INT J HEAT FLUID FL 31
- 등재유형
- 게재일자(2010)
The role of helicity in Lagrangian turbulence is investigated using direct numerical simulation of homogeneous
isotropic turbulence. Probability density functions and autocorrelations along a fluid particle trajectory
associated with geometric quantities such as curvature and torsion of the Lagrangian trajectory
are provided. The relationship between helicity and the ratio of torsion to curvature is investigated.
We found that probability density functions of torsion and torsion normalized by curvature clearly show
well-established slope in log?log plots. Finally, the relationship between helicity, acceleration and geometric
quantities are discussed.
isotropic turbulence. Probability density functions and autocorrelations along a fluid particle trajectory
associated with geometric quantities such as curvature and torsion of the Lagrangian trajectory
are provided. The relationship between helicity and the ratio of torsion to curvature is investigated.
We found that probability density functions of torsion and torsion normalized by curvature clearly show
well-established slope in log?log plots. Finally, the relationship between helicity, acceleration and geometric
quantities are discussed.
The role of helicity in Lagrangian turbulence is investigated using direct numerical simulation of homogeneous
isotropic turbulence. Probability density functions and autocorrelations along a fluid particle trajectory
associated with geometric quantities such as curvature and torsion of the Lagrangian trajectory
are provided. The relationship between helicity and the ratio of torsion to curvature is investigated.
We found that probability density functions of torsion and torsion normalized by curvature clearly show
well-established slope in log?log plots. Finally, the relationship between helicity, acceleration and geometric
quantities are discussed.
isotropic turbulence. Probability density functions and autocorrelations along a fluid particle trajectory
associated with geometric quantities such as curvature and torsion of the Lagrangian trajectory
are provided. The relationship between helicity and the ratio of torsion to curvature is investigated.
We found that probability density functions of torsion and torsion normalized by curvature clearly show
well-established slope in log?log plots. Finally, the relationship between helicity, acceleration and geometric
quantities are discussed.
