Modeling the dynamical friction timescale of a sinking satellite

Dynamical friction on satellite galaxies

Michiko Fujii Department of Astronomy, Graduate School of Science, the University of Tokyo, Tokyo, 113 [email protected] Yoko Funato General Systems Studies, Graduate Division of International and Interdisciplinary Studies, University of Tokyo, Tokyo, 153 [email protected] and Junichiro Makino Department of Astronomy, Graduate School of Science, the University of Tokyo, ...

Modeling the dynamical sinking of biogenic particles in oceanic flow

We study the problem of sinking particles in a realistic oceanic flow, with major energetic structures in the mesoscale, focussing in the range of particle sizes and densities appropriate for marine biogenic particles. Our aim is to evaluate the relevance of theoretical results of finite size particle dynamics in their applications in the oceanographic context. By using a simplified equation of...

Dynamical modeling with application to friction phenomena

Interactive comment on “Modeling the dynamical sinking of biogenic particles in oceanic flow” by

The manuscript "Modeling the dynamical sinking of biologenic particles in oceanic flow" presents an interesting study of particle sedimentation in realistic oceanic flows. In particular, it focuses in a simplified dynamics accounting for gravitational settling and also scrutinizes the effect of additional terms such as that due to Coriolis force (accounting for rotation) and inertial terms. The...

Timescale Analysis for Nonlinear Dynamical Systems

Insight into the behavior and simpliŽ ed control of a nonlinear dynamical system can be gained by analyzing the timescale structure. Near an equilibrium point, the eigenvalues and eigenvectors for the linearized system provide the necessary information. Nonlinear systems often operate on multiple timescales away from equilibrium, but there has been no general systematic approachto determine the...