This paper proposes a new analytical procedure to simulate the frost heave of granular materials. The objective of the research is to examine the applicability of discontinuous analysis to numerical simulation for the mechanical behaviour of granular materials subjected to freeze-thaw action. In this paper, numerical simulations of freeze-thawing triaxial compression tests for glass beads were ...

Many hydrological algorithms have been developed to automatically extract drainage networks from DEM, and the D8 algorithm is widely used worldwide to delineate drainage networks and catchments. The simulation accuracy of the SWAT model depends on characteristics of the watershed, and previous studies of DEM resolution and its impacts on drainage network extraction have not generally considered...

Till Steinbach Hochschule für Angewandte Wissenschaften Hamburg Berliner Tor 7 20099 Hamburg Deutschland [email protected] Till Steinbach ist wissenschaftlicher Mitarbeiter an der Hochschule für Angewandte Wissenschaften (HAW) Hamburg, wo er zuvor Informatik studierte. Anfang 2011 schloss er seine Masterarbeit zur Simulation von Echtzeit-Ethernet basierten Fahrzeugnetzen ...

The Discrete Element Method (DEM) recently presents numerical tool widely used in simulation of heterogeneous solids. The method captures dynamic behaviour of solid by considering motion and interaction of material particles. The most computationally expensive procedure of the DEM is search of contacts for particles, therewith each pair of colliding particles has to be identified. To investigat...

according to variety of accessible hydrological models, evaluateing the efficiency of models for different management objectives are essential. therefore, models with simple structure and using minimal input that can provide an acceptable result can serve as an effective tool to watershed managers. hence, the objective of this research is to evaluate the relative performances of the lumped conc...

A coupled SPH-DEM based two-dimensional (2-D) micro-scale single cell model is developed to predict basic cell-level shrinkage effects of apple parenchyma cells during air drying. In this newly developed drying model, Smoothed Particle Hydrodynamics (SPH) is used to model the low Reynolds Number fluid motions of the cell protoplasm, and a Discrete Element Method (DEM) is employed to simulate th...

Es wird ein Modell vorgestellt, welches die N-Dynamik im Weinbau simuliert. Basierend auf dem Modell HERMES wurden Modifikationen zur speziellen Berücksichtigung von Managementmaßnahmen im Weinbau vorgenommen. Das Wachstumsmodell für Wein beinhaltet neben einer mehrjährigen Simulation des Rebenwachstums auch die Möglichkeit einzelne Schnittmaßnahmen organspezifisch zu berücksichtigen und das Sc...