In der Chirurgie spielte Training schon immer eine wichtige Rolle. Mit der Einführung minimal-invasiver Verfahren ist der Bedarf deutlich gestiegen. Neben dem Tiermodell konnte der Anwender bisher nur auf Boxoder virtuelle Trainer zurückgreifen. ELITE (endoskopisch-laparoskopische interdisziplinäre Trainingseinheit) ist ein neues voll-synthetisches ex-vivo Trainingsmodell, mit dem die unterschi...

The hydro-mechanical coupling transport process of sand production is numerically investigated with special attention paid to the bonding effect between sand grains. By coupling the lattice Boltzmann method (LBM) and the discrete element method (DEM), we are able to capture particles movements and fluid flows simultaneously. In order to account for the bonding effects on sand production, a cont...

With the growth of available computational resource, CFD–DEM (computational fluid dynamics–discrete element method) becomes an increasingly promising and feasible approach for the study of sediment transport. Several existing CFD–DEM solvers are applied in chemical engineering and mining industry. However, a robust CFD–DEM solver for the simulation of sediment transport is still desirable. In t...

Calculations based on US Geological Survey (USGS) digital elevation models (DEMs) inherit any errors associated with that particular representation of topography. We investigated the potential impact of error in a USGS 30 m DEM on terrain analysis over 27 km. The difference in elevation between 2652 differential Global Positioning Systems measurements and USGS 30-m DEM derived elevations provid...

To improve the working performance of hammer mill, cutting-edge and oblique were designed in this study. The advantages new hammers theoretically analyzed. grinding process corn grain with different was studied by discrete element method (DEM) experiments. Discrete simulation results showed that under same rotor speed conditions, had highest bond-breaking efficiency model. could reduce incident...