نتایج جستجو برای: dem simulation

تعداد نتایج: 578333  

Journal: :Powder Technology 2021

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...

2006
Annamaria Castrignanò Gabriele Buttafuoco Roberto Comolli Cristiano Ballabio

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...

Journal: :Journal of Japan Society of Civil Engineers, Ser. A1 (Structural Engineering ^|^ Earthquake Engineering (SE/EE)) 2014

Journal: :Energies 2021

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 ...

Journal: :REM - International Engineering Journal 2021

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...

Journal: :Granular Matter 2023

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...

2011
Christian Borß

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...

Journal: :JSW 2011
Li Shidan Liguo Sun Xin Li Desheng Wang

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...

2002
A. Goldshtein

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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