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This is an introductory course into some aspects of the physics of granular materials. Three theoretical questions are looked into more detail corresponding to the 3h of the course: I present some statistical models to describe the shape of a heap under impact and present a way to calculate the...
Persistent link: https://www.econbiz.de/10010591540
, hydrodynamics and irreversible thermodynamics. These tools have proved their relevance for molecular mixtures and the Soret effect …
Persistent link: https://www.econbiz.de/10010591840
A gas kinetic method for simulating ideal fluids based on the BGK equation is described. The method is extended to model nonideal fluids. The method developed is used to simulate systems described by a Cahn–Hilliard equation coupled to a fluid equation. The results of simulations of binary...
Persistent link: https://www.econbiz.de/10010599458
In the present work we derive hydrodynamic equations for the infinite, rarified, smooth, non-homogeneous spherical granular gas. The long-time behavior of these equations is analyzed and we show that the diffusive modes become negligible compared to the propagating modes of the system. This...
Persistent link: https://www.econbiz.de/10010599484
We report on details of a simulation technique for particles under quasi-static motion determined by a balance of conservative and dissipative interactions acting at the pair level. We develop frame-invariant and linear viscous interactions between pairs of translating and rotating spheres in a...
Persistent link: https://www.econbiz.de/10010586274
Tidal turbine blades are subjected to significant thrust and torsional loadings due to the high density of the seawater in which they operate. These thrust loadings lead to high bending moments at the blade root, which can prove to be a serious design constraint for these devices and can have...
Persistent link: https://www.econbiz.de/10011044383
This paper presents an investigation of the impacts of a Severn Barrage on the hydro-environment of the Bristol Channel and Severn Estuary using the Environmental Fluid Dynamics Code (EFDC) model with a recently developed Barrage module (EFDC_B). Details are given of a barrage module being...
Persistent link: https://www.econbiz.de/10011044938
TSE values. In the case study (Ria de Ortigueira, a large estuary in NW Spain) a numerical model of the hydrodynamics is …
Persistent link: https://www.econbiz.de/10011046038
An important class of floating wave energy converters (that includes the IPS buoy, the Wavebob and the PowerBuoy) comprehends devices in which the energy is converted from the relative (essentially heaving) motion between two bodies oscillating differently. The paper considers the case of the...
Persistent link: https://www.econbiz.de/10011046297
Lattice Boltzmann numerical simulations were performed to obtain the drag force on 3D fractal objects. The hydrodynamic radius Rh was calculated and compared with the radius of gyration Rg for a series of fractal aggregates to get an insight in to the role of the aggregate size and fractal...
Persistent link: https://www.econbiz.de/10011050493