We present a numerical solution of the natural convection from inclined wall plumes which arise from a line thermal source imbedded at the leading edge of an adiabatic plate with arbitrary tilt angle between 0 and n/2, and embedded in a fluid-saturated porous medium. An appropriate transformation of the governing boundary-layer equations is proposed and a very efficient novel numerical solution...

Flow on an inclined plane is both one of the most common situations encountered in granular ows, as well as one of the most extensively studied geometries in their theoretical treatment. Nevertheless, so far there are very few systematic studies concerning the innuence of the (dissipative) material properties on the ow. Here, numerical simulations are presented where the focus is on the innuenc...

We report experimental results on the defect turbulent state of undulation chaos in inclined layer convection of a fluid with Prandtl number approximately 1. By measuring defect density and undulation wave number, we find that the onset of undulation chaos coincides with the theoretically predicted onset for stable, stationary undulations. At stronger driving, we observe a competition between o...

Geosynthetic Clay Liners (GCLs) are mainly used to provide watertightness for soils. Their principal function is often fulfilled when construction regulations are implemented. However, when these materials are set in an inclined position, the failure of the whole landfill facility becomes a major concern. Slope stability becomes out significant to be verified; otherwise the principal function o...

We investigate a one-dimensional model describing the motion of liquid drops sliding down an inclined plane (the so-called quasi-static approximation model). We prove existence and uniqueness of a solution and investigate its long time behavior for both homogeneous and inhomogeneous medium (i.e. constant and non-constant contact angle). We also obtain some homogenization results.

For multielectron beam systems with a single electron source, the outside beams need to be collimated before entering the individual microcolumns. As an alternative of the traditional multibeam source design where the broad beam from the source is collimated by a single lens, the broad beam can be first split in subbeams that are focused by a microlens array and subsequently collimated by a def...

The dynamics of artificial asteroids on the Trojan-like orbits around Neptune is investigated in this paper. We describe the dependence of the orbital stability on the initial semimajor axis a and inclination i by constructing a dynamical map on the (a, i)−plane. Rich details are revealed in the dynamical map, especially a unstable gap at i = 45◦ is determined and the mechanism triggering chaos...

The avalanche behavior of gravitationally forced granular layers on a rough inclined plane is investigated experimentally for different materials and for a variety of grain shapes ranging from spherical beads to highly anisotropic particles with dendritic shape. We measure the front velocity, area, and height of many avalanches and correlate the motion with the area and height. We also measure ...

We present Keck spectropolarimetry of the highly polarized radio-loud quasar 3CR68.1 (z = 1.228, V = 19). The polarization increases from 5% in the red (4000Å rest-frame) to >10% in the blue (1900Å rest-frame). The broad emission lines are polarized the same as the continuum, which shows that 3CR68.1 is not a blazar as it has sometimes been regarded in the past. We also present measurements of ...

We consider the static and dynamic behaviour of two-dimensional droplets on inclined heterogeneous substrates. We utilize an evolution equation for the droplet thickness based on the long-wave approximation of the Stokes equations in the presence of slip. Through a singular perturbation procedure, evolution equations for the location of the two moving fronts are obtained under the assumption of...