Motion Trajectories Of Particles Research Articles

3D particle motion trajectories: Direct observation of Love‐Rayleigh coupling

We present observations of severe particle motion distortion due to Love‐Rayleigh wave coupling (e.g., between 0L and 1R) using a display of 3D particle motion trajectory for records obtained at GDSN station HON. Though effects of lateral heterogeneity are yet to be examined carefully, phase velocity dispersion curves, calculated for a multilayered oceanic model with azimuthal anisotropy, predict this type of coupling in the period range between 20 and 30 s depending on the propagation direction of surface waves.

On the motion of a particle over a rough rotating plane

The motion of a particle over a rough horizontal plane that rotates with constant angular velocity about a vertical axis is studied. The particle is acted on by dry friction with the plane that satisfies Coulomb's law. The equations of motion are solved asymptotically close to the point where the particle stops. Various types of motion with stopping are found. The motions are simulated numerically over the full range of variation of the parameters and initial conditions. As a result, typical trajectories of particle motion are constructed. The integral manifold which isolates in phase space the motions with stopping and the motions in which the particle moves away to infinity is found. The phase trajectories are constructed in this manifold.

Velocities of convective air currents in electric arcs

The authors used a conventional technique of high-speed photography of light-emitting, finely-dispersed carbon particles which were introduced into the gap between the electrodes by special vibrators. When the trajectory of particle motion is available the value of ..delta..U/ ..delta..5 can be determined for the radial and vertical velocity components.

The motion of a particle in a nonuniform moving viscous medium

The motion of particles is examined in a nonuniform moving viscous medium in the regions Re < 1 and 1 < Re ≤300. Solutions are presented for the differential equations which make it possible to calculate the trajectories of particle motion in a nonuniform moving viscous medium.