| Mon December 1st 2008 11:00 ZH286 | Seminar | Acceleration statistics of inertial particles in turbulent flow Enrico Calzavarini |
Details:The dynamics of particles in turbulent flows when the particle-size is larger than the dissipative scale of the carrier flow is discussed. Recent experiments have highlighted the signature of particles finite-size on the acceleration statistics. Several effects, such as the decrease of acceleration variance at increasing the particles size and the correspondent increasing of the acceleration correlation time, cannot be accounted for by point particle models considering e.g. only the Stokes drag and the added mass term in the particle’s equation of motion. By means of a detailed comparison between numerical simulations and experimental data, it will be shown that a more consistent description is achieved when taking into account Faxén corrections in the particle’s equation of motion. | ||
