Search Results - "Wirtz, Siegmar"

Influence of particle diameter and material properties on mixing of monodisperse spheres on a grate: Experiments and discrete element simulation by Simsek, Erdem, Sudbrock, Florian, Wirtz, Siegmar, Scherer, Viktor

“…The Discrete Element Method (DEM) can help to obtain detailed information on the mixing process within a bed of fuel particles on grate firing systems. In a…”
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An experimental analysis on mixing and stoking of monodisperse spheres on a grate by Sudbrock, Florian, Simsek, Erdem, Wirtz, Siegmar, Scherer, Viktor

“…A better understanding of the mixing and stoking process is crucial for an optimization of the combustion process on grate firing systems. Thus experimental…”
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An Experimental and Numerical Study of Transversal Dispersion of Granular Material on a Vibrating Conveyor by Simsek, Erdem, Wirtz, Siegmar, Scherer, Viktor, Kruggel-Emden, Harald, Grochowski, Rafal, Walzel, Peter

“…The mixing of thin granular layers transported on the surface of an oscillating trough is experimentally and numerically examined. The particle dispersion was…”
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Mixing and segregation of spheres of three different sizes on a batch stoker grate: Experiments and discrete element simulation by Hilse, Nikoline, Kriegeskorte, Max, Illana, Enric, Wirtz, Siegmar, Scherer, Viktor

“…Mixing and segregation in a tri-disperse granular assembly of polyoxymethylene (POM) spheres induced by the moveable stoking bars of a generic batch grate…”
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Experimental investigation of radiative heat propagation in a simplified generic packed bed by Tyslik, Matthias, Pörtner, Lukas, Wirtz, Siegmar, Schiemann, Martin

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A numerical and experimental comparison of heat transfer in a quasi two-dimensional packed bed by Tyslik, Matthias, Ebert, Mirko, Schiemann, Martin, Wirtz, Siegmar, Lessig, Christian

“…Heat transfer plays a major role in many industrial processes taking place in packed beds. An accurate and reliable simulation of the heat exchange between…”
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Coupled three dimensional DEM–CFD simulation of a lime shaft kiln—Calcination, particle movement and gas phase flow field by Krause, Bastian, Liedmann, Birk, Wiese, Jens, Wirtz, Siegmar, Scherer, Viktor

“…In lime shaft kilns the limestone is heated in counterflow with the flue gas from multiple burners, commonly fired by fossil or alternative fuels. After…”
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3D-DEM-CFD simulation of heat and mass transfer, gas combustion and calcination in an intermittent operating lime shaft kiln by Krause, Bastian, Liedmann, Birk, Wiese, Jens, Bucher, Patrick, Wirtz, Siegmar, Piringer, Hannes, Scherer, Viktor

“…This work presents DEM-CFD simulations of the transient processes occurring in an industrial scale PFR-kiln. DEM allows the numerical simulation of the moving…”
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Determination of the statistical distribution of drag and lift coefficients of refuse derived fuel by computer vision by Streier, Robin, Wirtz, Siegmar, Aleksandrov, Krasimir, Gehrmann, Hans-Joachim, Stapf, Dieter, Zhang, Miao, Vogelbacher, Markus, Matthes, Jörg, Scherer, Viktor

“…•Drag and lift coefficients are important to describe the flight behaviour of particles.•Refuse derived fuel (RDF) has a non-trivial flight behaviour due to…”
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Pyrolysis of Spherical Wood Particles in a Packed Bed – Comparison between Resolved and Unresolved Discrete Element Method/Computational Fluid Dynamics by Jaeger, Bo, Illana Mahiques, Enric, Wirtz, Siegmar, Scherer, Viktor

“…Abstract The combined discrete element method/computational fluid dynamics (DEM/CFD) approach allows for the description of reacting granular assemblies passed…”
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DEM/CFD modeling of the fuel conversion in a pellet stove by Wiese, Jens, Wissing, Frank, Höhner, Dominik, Wirtz, Siegmar, Scherer, Viktor, Ley, Ursula, Behr, Hans Martin

“…This study presents an approach to simulate wood pellet combustion in domestic heating systems. Until now the challenge of such simulations lies in the…”
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Locally Resolved Simulation of Gas Mixing and Combustion Inside Static and Moving Particle Assemblies by Illana Mahiques, Enric, Brömmer, Maximilian, Wirtz, Siegmar, Scherer, Viktor

“…Resolving the flow field within the voids between particles of reacting granular assemblies is essential to obtain correct conversion rates. Due to the…”
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WITHDRAWN: Determination of the statistical distribution of drag and lift coefficients of refuse derived fuel by computer vision by Streier, Robin, Wirtz, Siegmar, Aleksandrov, Krasimir, Gehrmann, Hans-Joachim, Stapf, Dieter, Zhang, Miao, Vogelbacher, Markus, Matthes, J¨org, Scherer, Viktor

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Shape-changing particles for locally resolved particle geometry in DEM simulations by Illana, Enric, Qyteti, Klidi, Scharnowski, Maik, Brömmer, Maximilian, Wirtz, Siegmar, Scherer, Viktor

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Convective drying of wood chips: Accelerating coupled DEM-CFD simulations with parametrized reduced single particle models by Reineking, Lucas, Fischer, Jonas, Mjalled, Ali, Illana, Enric, Wirtz, Siegmar, Scherer, Viktor, Mönnigmann, Martin

“…The simulation of industry-scale reactive bulks is challenging due to the complex interaction between fluid and particles. The particles in the bulk and their…”
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Experimental Evaluation of a Novel Sensor-Based Sorting Approach Featuring Predictive Real-Time Multiobject Tracking by Maier, Georg, Pfaff, Florian, Pieper, Christoph, Gruna, Robin, Noack, Benjamin, Kruggel-Emden, Harald, Langle, Thomas, Hanebeck, Uwe D., Wirtz, Siegmar, Scherer, Viktor, Beyerer, Jurgen

“…Sensor-based sorting is a machine vision application that has found industrial application in various fields. An accept-or-reject task is executed by…”
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Investigating the inflow into a granular bed using a locally resolved method by Brömmer, Maximilian, Scharnowski, Maik, Illana Mahiques, Enric, Wirtz, Siegmar, Scherer, Viktor

“…Discrete Element Method – Computational Fluid Dynamics (DEM/CFD) simulations of industrial-scale granular systems employ spatial averaging (porous media…”
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Withdrawal notice to: Determination of the statistical distribution of drag and lift coefficients of refuse derived fuel by computer vision [Fuel 338 (2023) 127122] by Streier, Robin, Wirtz, Siegmar, Aleksandrov, Krasimir, Gehrmann, Hans-Joachim, Stapf, Dieter, Zhang, Miao, Vogelbacher, Markus, Matthes, Jörg, Scherer, Viktor

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Coupled DEM/CFD simulation of heat transfer in a generic grate system agitated by bars by Rickelt, Stefan, Sudbrock, Florian, Wirtz, Siegmar, Scherer, Viktor

“…Coupled DEM/CFD simulations are compared to experiments with agitated spherical particles (10mm in diameter) on a generic grate and exposed to a transient…”
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Simulation of Reacting, Moving Granular Assemblies of Thermally Thick Particles by Discrete Element Method/Computational Fluid Dynamics by Mahiques, Enric Illana, Brömmer, Maximilian, Wirtz, Siegmar, Wachem, Berend, Scherer, Viktor

“…The potential and limitations of the discrete element method (DEM) coupled with computational fluid mechanics (CFD) to simulate chemically reacting, moving…”
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