نتایج جستجو برای: dem simulation
تعداد نتایج: 578333 فیلتر نتایج به سال:
Breakage occurs in several particulate systems that are simulated using the discrete element method (DEM), namely crushing and grinding as well inadvertently others include transportation, handling, mixing, separation geotechnical applications. Different approaches may be used to describe particle breakage DEM, but cases which influences significantly flow behaviour of material, imbedding descr...
Various methods have been applied to generate Digital Elevation Models (DEM) but whatever method is used, DEM estimates will always be affected by errors. Comparing interpolated values with the actual elevation values, obtained with a high precision field survey, allows us to assess DEM accuracy. At every spot height location it is possible to subtract the actual values from the DEM values to o...
The primary motivation of this paper is to investigate the sand-retention mechanisms that occur at opening sand filters. Various retention under various conditions are explored have a particulate flow with low concentration particles (called slurry flow) such as particle shape, size, and concentration. computational fluid dynamic (CFD)–discrete element method (DEM) model applied predict steady ...
A Brazilian Tensile Strength (BTS) laboratory test for meta-andesite was modeled using a Finite/Discrete Element Method (FDEM or FEM-DEM). These hybrid methodologies allow modeling the transition from continuous to discontinuous that happens on mechanical tests of rock samples. This article presents calibration and simulation BTS some parameters previously calibrated UCS same material. Irazu, t...
Abstract For a wide range of applications, we need DEM simulations granular matter in contact with elastic flexible boundaries. We present novel method to describe the interaction between particles and membrane. Here, standard mass-spring model approach is supplemented by surface patches given triangulation In contrast models, our simulation allows for an efficient even large particle size disp...
Computergestützte Methoden zur akustischen Raumsimulation finden Anwendung bei der Planung und Simulation von Konferenzräumen, Konzertoder Plenarsälen, also bei Architektur, bei der die Akustik eine wichtige Funktion erfüllt. Dabei wird unter Verwendung von physikalischen Modellen die Schallausbreitung in dem betrachteten Raum simuliert und der Höreindruck an bestimmten Positionen innerhalb des...
Terrain aided positioning (TAP) is a kind of positioning method which acquires position information from the terrain elevation datum underneath the vehicle. This method has the characteristics of autonomy, allweather, anti-interference, strong stealthiness and high accuracy. It is widely used in the navigation system for various aircrafts, cruise missiles and underwater vehicles. The fundamenta...
The problem of expansion of a dilute granular gas consisting of smooth, inelastic hard spheres into vacuum was investigated by three different methods: both (1) analytical and (2) computational (CFD) treatments of a hydrodynamic model, and (3) by Discrete Element Method (DEM) simulation. Furthermore, the systems were followed for long times, over which the granular kinetic energy decreases by s...
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