Abstract
The Lagrangian evolution of infinitesimal material lines is investigated experimentally through three dimensional measurements of particle trajectories (3D-PTV) in quasi homogeneous isotropic turbulence with Re λ = 50. By postprocessing 3D-PTV data obtained by Lüthi et al. (2005) we access the full set of velocity derivatives ∂u i/∂x j which allows for monitoring the evolution of various turbulent quantities along each particle trajectory. The main goal of the present investigation concerns the physical mechanisms that govern the Lagrangian evolution of material lines I. In particular we will focus on the effect of vorticity and strain, respectively, on the orientation and on the stretching of I.
| Original language | English (US) |
|---|---|
| Title of host publication | 4th International Symposium on Turbulence and Shear Flow Phenomena |
| Pages | 91-94 |
| Number of pages | 4 |
| Volume | 1 |
| State | Published - Dec 1 2005 |
| Event | 4th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 4 - Williamsburg, VA, United States Duration: Jun 27 2005 → Jun 29 2005 |
Other
| Other | 4th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 4 |
|---|---|
| Country | United States |
| City | Williamsburg, VA |
| Period | 6/27/05 → 6/29/05 |
Fingerprint Dive into the research topics of 'The effect of vorticity and strain on the evolution of material lines in homogeneous turbulence'. Together they form a unique fingerprint.
Cite this
Guala, M., Liberzon, A., Kinzelbach, W., Lüthi, B., & Tsinober, A. (2005). The effect of vorticity and strain on the evolution of material lines in homogeneous turbulence. In 4th International Symposium on Turbulence and Shear Flow Phenomena (Vol. 1, pp. 91-94)