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Showing 1 to 20 of 35 for “"Particle Flow"”.
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Particle detector optimization via particle flow algorithms
Using the the SLIC simulator software and the org.lcsim reconstruction framework package, the performance of Mat Charles' NonTrivialPfa.java PFA for several different detector variations was found by determining the mass resolution for a given detector geometry. The variations tested included the …
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Development of a Particle Flow Test for Rotational Molding
<p>One of the current testing method (the Dry Flow test) to qualify resin for use in production in the rotomolding process has been shown to have many flaws in both equipment and procedure. Research was done here to investigate a possible alternative that could eliminate some of these testing …
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Investigation of hydro-mechanical particle flow through horizontal orifices
… has been done on the gravitational passing of particles through an orifice, where in contrast, limited knowledge exists on alternative driving factors of flow. The movement of particles induced both mechanically and hydraulically formed the basis of this dissertation in which selected granular …
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The Simulation and Analysis of Particle Flow Through an Aggregate Stockpile
… techniques, understanding the timing and flow of particles through a stockpile is important for correctly timing samples, making proper process adjustments and overall stockpile safety. Because much of the research of today lacks important information regarding actual interior particle …
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Simulation of urea particle flow using DEM for dry fertilizer spreading optimization
… Urea was first characterized experimentally for particle size and density, and the DEM particles were represented as single spheres with a mean diameter of 3.2 mm. A full-factorial design of experiment was then used to calibrate the model using two bulk responses: angle of repose and loose-fill …
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Machine learning techniques for calorimeter cluster calibration of the CMS particle flow algorithm.
… the energies of charged and neutral hadrons. The Particle Flow (PF) algorithm integrates information from various CMS sub-detectors to reconstruct and identify all particles produced in proton collisions. Photons and neural hadrons are reconstructed using PF element energy clusters. A proper …
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Machine learning techniques for calorimeter cluster calibration of the CMS particle flow algorithm.
… the energies of charged and neutral hadrons. The Particle Flow (PF) algorithm integrates information from various CMS sub-detectors to reconstruct and identify all particles produced in proton collisions. Photons and neural hadrons are reconstructed using PF element energy clusters. A proper …
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Direct Simulations of Fluid-Particle Flow in Newtonian and non-Newtonian Fluids Using Coupled Lattice Boltzmann and Discrete Element Methods
… are employed to investigate a suite of fluid-particle flow problems in both Newtonian and non-Newtonian fluids. First, the rheological properties of finer particle suspensions in a Newtonian fluid are investigated, as the particle shape and solid fraction vary. An increase of the relative …
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Calorimetry at a Future Linear Collider
… experiments is built around high-granularity Particle Flow Calorimetry that, in contrast to traditional calorimetry, uses the energy measurements for charged particles from the tracking detectors. This can only be realised if calorimetric energy deposits from charged particles can be separated …
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An assessment of software packages as applied to particles in a rotating mill
… ncomminution. The packages are ELFEN, ABAQUS and Particle Flow Code (PFC²D). The numerical codes differe in the method of inputting data as well as the theoretical models used. ELFEN and ABAQUS are finite element (FEM) packages wheras PFC²D uses the discrete element method (DEM). The packages also …
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Jet substructure at the Large Hadron Collider
… the 2-prong substructure of jets. We use CMS's particle flow reconstruction algorithm to obtain jet constituents, which we then use to perform various jet substructure studies. After validating our basic kinematics and substructure results through a comparison to results from parton shower …
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Direct Ink Writing of Functional Fiber/Granular Composites
… granular composites provide scalable access to particle based structures with high material efficiency and broad resource compatibility. However, the additive manufacturing of these composite systems remains challenging. For fiber based composites, precise control of fiber placement, matrix …
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High constriction ratio continuous insulator based dielectrophoretic particle sorting
… to distinguish, characterize, and manipulate particles and bacteria based on their size and general cell phenotype (e.g. gram positive vs. gram negative). However, separation of bacteria with diverse surface phenotypes but similar sizes sets a much higher demand on separation sensitivity, …
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Parametric Analysis of Particle Spreading with Discrete Element Method
… sintering. Several processing parameters such as particle size, inter-particle friction, blade speed, and blade gap size affect the spreading process and, therefore, the final product quality. The objective of this study is to parametrically analyze the particle flow behavior and the effect of the …
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Gas phase hydrodynamics inside a circulating fluidized bed
… The gas phase is important as the motion of the particles is controlled by the gas. Accurate simulations of CFB's are not possible without accurate information on the gas phase. Instrumentation was developed for use in measuring gas phase fluctuations inside a scale model CFB. Results were …
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Discrete Element Modeling of Railway Ballast for Studying Railroad Tamping Operation
The behavior of the ballast particles during their interaction with tamping tines in tamping operation is studied by developing a simulation model using the Discrete Element Model (DEM), with the aim of optimizing the railroad tamping operation. A comprehensive literature review is presented …
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Numerical simulation of selected geologic processes based on Discrete Element Method
… of pull-apart basin development based on Particle Flow Code (PFC) and simulation of deformation and earthquake potential of Ordos Block (China) under present tectonic stress regime based on Universal Distinct Element Code (UDEC). A scale-independent modeling approach based on PFC2D has …
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Development of a static bioactive stent prototype and dynamic aneurysm-on-a-chip(TM) model for the treatment of aneurysms
… the stent itself. The second step is to test particles/cells in a microfluidic environment. Therefore, biocompatability data was collected against PDMS, bacterial nanocellulose (BNC), and magnetic bacterial nanocellulose (MBNC). Preliminary static bioactive stents were synthesized whereby BNC …
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Novel effects in light-actuated systems based on dispersed azobenzene dyes and azopolymers
… manipulation of objects, and a light-controlled particle flow system where propulsion channels can freely be drawn on liquid surfaces. We hope that this approach, together with exciting recent examples from literature, may inspire further work in what could be referred to as azopolymer system …
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ΔΙΦΑΣΙΚΗ ΡΟΗ ΑΕΡΑ - ΣΤΕΡΕΩΝ ΣΩΜΑΤΙΔΙΩΝ ΣΕ ΚΛΕΙΣΤΟΥΣ ΑΓΩΓΟΥΣ
THE GAS-PARTICLE TWO PHASE FLOW IN CLOSED, STRAIGHT, HORIZONTAL PIPES IS EXAMINED. IN DERIVING THE EQUATIONS, IT IS ASSUMED THAT A GAS PARTICLE SUSPENSION MAYBE REGARDED AS A CONTINUUM, I.E. THE PARTICLES ARE CONSIDERED TO BE CONTINUOUSLY, BUT NOT NECESSARILY UNIFORMLY, DISTRIBUTED THROUGHOUT THE …
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