"The rising global energy demand is causing a dramatic acceleration of social unrest. Impact of climate change on the environment due to the combustion of nonrenewable energy sources is becoming increasingly alarming. ...

This thesis starts with a brief overview of patterns in rapid granular flows driven by vibration, gravity and shear, e.g. standing wave patterns and convection rolls in a vibrated granular system, density waves in gravity ...

Abstract not available

The gravity-driven flow of granular materials in a vertical channel is simulated us- ing molecular dynamics technique. The granular particles are modelled as smooth hard disks, so the simulations are performed in two ...

In the present thesis, the gravity driven granular Poiseuille flow has been probed via event-driven simulations in three dimensions between two infinite parallel plates. A monodisperse system of “rough” inelastic hard ...

The present work concerns the orientation dynamics of anisotropic particles in viscoelastic °uids. A spheroidal geometry is taken as being representative of an anisotropic, axisymmetric particle, and the work is an ...

The study of granular materials has received a recent upsurge of interest in physics. This has been motivated by both the relevance of such flows to a wide range of industrial and geological processes, and by the realization ...

In the present thesis, the natural convection flow over a line heat source is studied for the mean flow and the linear stability characteristics at different Prandtl numbers. This flow is purely driven by buoyancy and ...

Abstract not available

Aerodynamic theory for fixed wing aeroplanes, in the high Reynolds number limit, has now been well established. In nature however, it is the flapping motion that dominates, and it is observed that the frequency of flapping ...