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20th International Conference on Hydrotransport

作者： Abbaszadeh Molaei, E. Kuang, S.B. Zhou, Z.Y. Yu, A.B. Laboratory for Simulation and Modelling of Particulate Systems Department of Chemical Engineering Monash University Australia

Hydraulic transport of solids in pipelines is an important operation in industries such as metallurgy, mining and mineral processing. The hydraulic behaviour of the solids, i.e. velocity and concentration spatial distributions and pressure drop, in the conveyer pipes should be well understood as it results in developing of a set of correlations which are necessary for the design of hydraulic pipelines. Pipeline slurries exhibit a complex range of flow patterns, depending upon the physical properties of carrier fluid and transported solids, the superficial liquid velocity and concentration of slurry. Most of numerical, theoretical and experimental studies in the area of vertical lifting have been focused on the transportations of fine and medium size solids;and just a few research have been carried out on the vertical hydraulic conveying of coarse particles, particularly in terms of numerical studies. Therefore, in this work, a three-dimensional Discrete Element Model (DEM) and Computational Fluid Dynamics (CFD) are coupled to study the hydraulic transport of coarse solids in vertical conveyers with carrying fluid of water under different operation conditions. The model shows a good agreement with experimental observations both qualitatively and quantitatively, and it captures some specific phenomena related to the coarse particles such as the near-wall hydrodynamic lift force, which keeps the particles away the pipe wall. © BHR Group Hydrotransport 20.

关键词： Pipelines

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Simultaneous desulfurization and denitrification of sintering flue gas via composite absorbent

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Chinese Journal of Chemical Engineering 2016年第8期24卷 1104-1111页

作者： Jie Wang Wenqi Zhong Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education School of Energy and Environment Southeast University Centre for Simulation and Modelling of Particulate Systems Southeast University–Monash University Joint Research School

Experiments on simultaneous absorption of SO_2 and NO_X from sintering flue gas via a composite absorbent NaClO_2/NaClO were carried out. The effects of various operating parameters such as NaClO_2 concentration(ms), NaClO concentration(mp), molar ratio of NaClO_2/NaClO(M), solution temperature(TR), initial solution pH, gas flow(Vg) and inlet concentration of SO_2(CS) and NO(CN) on the removal efficiencies of SO_2 and NO were discussed. The optimal experimental conditions were determined to be initial solution pH = 6, TR=55 °C and M = 1.3 under which the average efficiencies of desulfurization and denitrification could reach99.7% and 90.8%, respectively. Moreover, according to the analysis of reaction products, it was found that adding NaClO to NaClO_2 aqueous solution is favorable for the generation of ClO_2 and Cl_2 which have significant effect on desulfurization and denitrification. Finally, engineering experiments were performed and obtained good results demonstrating that this method is practicable and promising.

关键词： Simultaneous desulfurization and denitrification Sintering flue gas Composite absorbent

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Operational Research: Methods and Applications

arXiv

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arXiv 2023年

作者： Petropoulos, Fotios Laporte, Gilbert Aktas, Emel Alumur, Sibel A. Archetti, Claudia Ayhan, Hayriye Battarra, Maria Bennell, Julia A. Bourjolly, Jean-Marie Boylan, John E. Breton, Michèle Canca, David Charlin, Laurent Chen, Bo Cicek, Cihan Tugrul Cox, Louis Anthony Currie, Christine S.M. Demeulemeester, Erik Ding, Li Disney, Stephen M. Ehrgott, Matthias Eppler, Martin J. Erdogan, Güneş Fortz, Bernard Franco, L. Alberto Frische, Jens Greco, Salvatore Gregory, Amanda J. Hämäläinen, Raimo P. Herroelen, Willy Hewitt, Mike Holmström, Jan Hooker, John N. Işık, Tugçe Johnes, Jill Kara, Bahar Y. Karsu, Özlem Kent, Katherine Köhler, Charlotte Kunc, Martin Kuo, Yong-Hong Letchford, Adam N. Leung, Janny Li, Dong Li, Haitao Lienert, Judit Ljubić, Ivana Lodi, Andrea Lozano, Sebastián Lurkin, Virginie Martello, Silvano McHale, Ian G. Midgley, Gerald Morecroft, John D.W. Mutha, Akshay Oguz, Ceyda Petrovic, Sanja Pferschy, Ulrich Psaraftis, Harilaos N. Rose, Sam Saarinen, Lauri Salhi, Said Song, Jing-Sheng Sotiros, Dimitrios Stecke, Kathryn E. Strauss, Arne K. Tarhan, Istenç Thielen, Clemens Toth, Paolo Van Woensel, Tom Vanden Berghe, Greet Vasilakis, Christos Vaze, Vikrant Vigo, Daniele Virtanen, Kai Wang, Xun Weron, Rafal White, Leroy Yearworth, Mike Yıldırım, E. Alper Zaccour, Georges Zhao, Xuying School of Management University of Bath Bath United Kingdom Makridakis Open Forecasting Center University of Nicosia Nicosia Cyprus Department of Decision Sciences HEC Montréal Montreal Canada Molde University College Molde Norway Cranfield School of Management Cranfield University Cranfield United Kingdom Department of Management Sciences University of Waterloo Waterloo Canada ESSEC Business School in Paris Department of Information Systems Decision Sciences and Statistics Cergy France H. Milton Stewart School of Industrial and Systems Engineering Georgia Institute of Technology Atlanta United States Centre for Decision Research Leeds University Business School University of Leeds Leeds United Kingdom Université du Québec à Montréal Montreal Canada Centre for Marketing Analytics and Forecasting Lancaster University Management School Lancaster University Lancaster United Kingdom School of Engineering Department of Industrial Engineering and Management Science I University of Seville Seville Spain Mila-Quebec AI Institute Montreal Canada Warwick Business School University of Warwick Coventry United Kingdom Department of Industrial Engineering Atilim University Ankara Turkey Department of Business Analytics University of Colorado School of Business Denver United States Cox Associates Denver United States Mathematical Sciences University of Southampton Southampton United Kingdom Faculty of Economics and Business Research Center for Operations Management KU Leuven Leuven Belgium Durham University Business School Durham University Durham United Kingdom Center for Simulation Analytics and Modelling University of Exeter Business School Exeter United Kingdom Department of Management Science Lancaster University Management School Lancaster University Lancaster United Kingdom University of St. Gallen St. Gallen Switzerland HEC - Management School of the University of Liège Liège Belgium Département d'Informatique Université Libre de Bruxelles Bruss

Throughout its history, Operational Research has evolved to include a variety of methods, models and algorithms that have been applied to a diverse and wide range of contexts. This encyclopedic article consists of two main sections: methods and applications. The first aims to summarise the up-to-date knowledge and provide an overview of the state-of-the-art methods and key developments in the various subdomains of the field. The second offers a wide-ranging list of areas where Operational Research has been applied. The article is meant to be read in a nonlinear fashion. It should be used as a point of reference or first-port-of-call for a diverse pool of readers: academics, researchers, students, and practitioners. The entries within the methods and applications sections are presented in alphabetical order. The authors dedicate this paper to the 2023 Turkey/Syria earthquake victims. We sincerely hope that advances in OR will play a role towards minimising the pain and suffering caused by this and future catastrophes. © 2023, CC BY.

关键词： Decision making

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Engineering VO2 Nanoparticles for Energy and Environmental Applications

Engineering VO2 Nanoparticles for Energy and Environmental A...

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中国化学会第30届学术年会-论坛六：中澳科学家论坛

作者：蒋绪川 Laboratory for Simulation and Modelling of Particulate Systems(SIMPAS) Department of Chemical Engineering Monash University

Energy and environment have emerged as the most critical challenges human faced to the sustainable global developments in the 21 *** have attracted much more attention because of their unique functional properties and... 详细信息

关键词： Engineering VO2 Nanoparticles for Energy and Environmental Applications

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An environment for sustainable research software in Germany and beyond: Current state, open challenges, and call for action

arXiv

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arXiv 2020年

作者： Anzt, Hartwig Bach, Felix Druskat, Stephan Löffler, Frank Loewe, Axel Renard, Bernhard Y. Seemann, Gunnar Struck, Alexander Achhammer, Elke Aggarwal, Piush Appel, Franziska Bader, Michael Brusch, Lutz Busse, Christian Chourdakis, Gerasimos Dabrowski, Piotr W. Ebert, Peter Flemisch, Bernd Friedl, Sven Fritzsch, Bernadette Funk, Maximilian D. Gast, Volker Goth, Florian Grad, Jean-Noël Hermann, Sibylle Hohmann, Florian Janosch, Stephan Kutra, Dominik Linxweiler, Jan Muth, Thilo Peters-Kottig, Wolfgang Rack, Fabian Raters, Fabian H.C. Rave, Stephan Reina, Guido Reißig, Malte Ropinski, Timo Schaarschmidt, Joerg Seibold, Heidi Thiele, Jan P. Uekerman, Benjamin Unger, Stefan Weeber, Rudolf Germany Innovative Computing Lab University of Tennessee KnoxvilleTN United States Department of English Studies Friedrich Schiller University Jena Germany Germany Department of Computer Science Humboldt-Universität zu Berlin Germany Heinz Nixdorf Chair for Distributed Information Systems Friedrich Schiller University Jena Germany Michael Stifel Center Jena Germany Center for Computation and Technology Louisiana State University Baton Rouge United States Germany Robert Koch Institute Berlin Germany Hasso Plattner Institute Faculty of Digital Engineering University of Potsdam Germany Institute for Experimental Cardiovascular Medicine University Heart Centre Freiburg Bad Krozingen Germany Faculty of Medicine University of Freiburg Freiburg Germany Matters of Activity. Image Space Material. Cluster of Excellence at Humboldt-Universität zu Berlin Germany Technische Universität München Germany Language Technology Lab Universität Duisburg-Essen Germany Germany Department of Informatics Technical University of Munich Germany Technische Universität Dresden Germany Deutsches Krebsforschungszentrum Heidelberg Germany Scientific Computing in Computer Science Technical University Munich Germany School of Computing Communication and Business Hochschule für Technik und Wirtschaft Berlin Germany Center for Bioinformatics Saar Saarland Informatics Campus Germany Institute for Modelling Hydraulic and Environmental Systems University of Stuttgart Germany Berlin Institute of Health Germany Scientific Computing Alfred Wegener Institute Helmholtz Center for Polar and Marine Research Bremerhaven Germany Max-Planck-Gesellschaft e.V. Institut für Theoretische Physik und Astrophysik Universität Würzburg Germany Institut für Computerphysik University of Stuttgart Germany University Library University of Stuttgart Germany Universität Bremen Germany Max Planck Institute of Molecular Cell Biology and Genetics Dresden Germany European Molecular Biology Laboratory Heidelb

Research software has become a central asset in academic research. It optimizes existing and enables new research methods, implements and embeds research knowledge, and constitutes an essential research product in itself. Research software must be sustainable in order to understand, replicate, reproduce, and build upon existing research or conduct new research effectively. In other words, software must be available, discoverable, usable, and adaptable to new needs, both now and in the future. Research software therefore requires an environment that supports sustainability. Hence, a change is needed in the way research software development and maintenance are currently motivated, incentivized, funded, structurally and infrastructurally supported, and legally treated. Failing to do so will threaten the quality and validity of research. In this paper, we identify challenges for research software sustainability in Germany and beyond, in terms of motivation, selection, research software engineering personnel, funding, infrastructure, and legal aspects. Besides researchers, we specifically address political and academic decision-makers to increase awareness of the importance and needs of sustainable research software practices. In particular, we recommend strategies and measures to create an environment for sustainable research software, with the ultimate goal to ensure that software-driven research is valid, reproducible and sustainable, and that software is recognized as a first class citizen in research. This paper is the outcome of two workshops run in Germany in 2019, at deRSE19 - the first International Conference of Research Software Engineers in Germany - and a dedicated DFG-supported follow-up workshop in Berlin. Copyright © 2020, The Authors. All rights reserved.

关键词： Software design

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simulations on mixing behaivors of superheated steam, heat-carrier and biomass particles

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Kung Cheng Je Wu Li Hsueh Pao/Journal of Engineering Thermophysics 2016年第5期37卷 1021-1026页

作者： Liu, Xue-Jiao Zhong, Wen-Qi Yu, Ai-Bing Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education Southeast University Nanjing210096 China Centre for Simulation and Modelling of Particulate Systems Southeast University-Monash University Joint Research Institute Suzhou215123 China Department of Chemical Engineering Monash University ClaytonVIC3800 Australia

A three-dimensional Eulerian-Eulerian multiphase model (two-fluid model, TFM) was developed to simulate the three-phase mixing behaviors of superheated steam, heat-carrier and biomass particles in an industrial-scale spout-fluid bed mixer. The superheated steam was treated as continuous primary phase simulated by the k-Ε two-equation turbulent model, while the heat-carrier and biomass were treated as two different secondary phases, and their viscosities and pressures were provided by the Kinetic theory of granular flow. The interactions between gas phase and each solid phase are described by Symbol-O'Brein drag model, while the interaction between two solid phases is described by morsi-alexander model. Heat transfers between gas phase and solid phases were calculated by Gunn model. Based on above models, the mixing effectiveness of the mixer was valuated and the effects of material properties on the heat transfer between phases were numerically investigated. Results show that the mixing effectivenss of spout-fluid mixer can reach over 70% and the final temperature of biomass is most sensitive to the size of biomass particle. © 2016, Science Press. All right reserved.

关键词： Computational fluid dynamics

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A Numerical Study of Raceway Formation in an Ironmaking Blast Furnace

A Numerical Study of Raceway Formation in an Ironmaking Blas...

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第十届中国钢铁年会暨第六届宝钢学术年会

作者： Miao Zhen Zhou Zongyan Yu Aibing Laboratory of Simulation and Modelling of Particulate Systems Department of Chemical EngineeringMonash University

This work presents a numerical study of gas-solid flow in a blast furnace raceway region by CFD-DEM coupled approach. In the simulation, 120000 spherical particles with particle diameter of 80 mm are packed into a real blast furnace geometry. Blast is injected at high velocities to generate a void space in the front of tuyere. The results show that three types of raceways are formed, including anti-clockwise circulating motions of particles, clockwise circulating motions of particles, and plume-like raceway. The results are analysed mainly in terms of particle flow patterns, particle velocity, porosity,and gas flow field around the raceway region. The observation of two opposite circulating gas vortexes locating upon and below tuyere during raceway formation has a good agreement with experiments. Further, the effects of different variables such as tuyere length and angles, and particle properties on raceway size and shape are examined.

关键词： blast furnace raceway CFD-DEM solid flow

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3D CFD-DEM study of gas-solids flow and heat transfer in a full-loop circulating fluidized bed

3D CFD-DEM study of gas-solids flow and heat transfer in a f...

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11th International Conference on Fluidized Bed Technology, CFB 2014

作者： Wahyudi, H. Chu, K.W. Yu, A.B. Laboratory for Simulation and Modelling of Particulate Systems School of Materials Science and Engineering The University of New South Wales Sydney Australia

In this work, an extended CFD-DEM approach is developed to study the gas-solids flow and heat transfer between bed and riser wall in three-dimensional full-loop circulating fluidized bed. The effects of some operational, such as superficial gas velocity and solids inventory, on the heat transfer coefficient between bed and riser wall are investigated. The governing heat transfer modes such as wall-fluid convection, wall-particle conduction, are then discussed to gain better understanding about heat transfer between bed and wall in circulating fluidized beds. This work demonstrates that the developed 3D CFD-DEM approach could be a useful tool to study the coupled fluid flow and heat transfer in such a complex system.

关键词： Fluidization

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Cooling rate dependence of polymorph selection during rapid solidification of liquid metal zinc

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Transactions of Nonferrous Metals Society of China 2015年第12期25卷 4072-4079页

作者：田泽安周丽丽莫云飞梁永超刘让苏贵州大学大数据与信息工程学院贵阳550025 赣南医学院信息工程学院赣州341000 Laboratory for Simulation and Modelling of Particulate Systems School of Materials Science and Engineering University of New South Wales 湖南大学物理与微电子科学学院长沙410082

The polymorph selection during rapid solidification of zinc melt was investigated by molecular dynamics simulation. Several methods including g（r）, energy, CNS, basic cluster and visualization were used to analyze the results. The results reveal that the cooling rate has no observable effect on the microstructure as TTc（Tc is the onset temperature of crystallization）; and at the first stage of crystallization, although microstructures are different, the morphologies of nucleus are similar, which are composed of HCP and FCC layers; the polymorph selection of cooling rate finally takes place at the second stage of crystallization： at a high cooling rate, the rapid increase of FCC atoms leads to a FCC crystal mixed with less HCP structures; while at a low cooling rate, HCP atoms grow at the expense of FCC atoms, resulting in an almost perfect HCP phase. The results reveal that the cooling rate is one of the important factors for polymorph selection.

关键词： polymorph selection crystal structure rapid solidification metal zinc molecular dynamics simulation

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Experimental studies of segregation in gas fluidization of ellipsoidal particles

Experimental studies of segregation in gas fluidization of e...

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11th International Conference on Fluidized Bed Technology, CFB 2014

作者： Gan, Jieqing Xu, Yingbo Zhou, Zongyan Yu, Aibing Laboratory for Simulation and Modelling of Particulate Systems School of Materials Science and Engineering The University of New South Wales Sydney NSW 2052 Australia

In this work, segregation of non-spherical particles in gas fluidization is studied by physical experiments. The shapes considered are spheroids with aspect ratio varying from 0.1 to 5.0. It is revealed that binary mixtures of ellipsoids have a higher minimum fluidization velocity than mono-shaped ellipsoids. Segregation occurs in binary-shaped mixtures within a narrow gas velocity range and large shape difference. Initial packing conditions have negligible influence on the final segregation degree.

关键词： Binary mixtures

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