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Application CFD-LES model for modelling multifluid coal combustion process [article]

Wojciech P. Adamczyk, Robert Zmuda, Sergiusz Mandrela, John Parra-Alvarez, Sean T. Smith, Jeremy N. Thornock, Minmin Zhou
2019 Figshare  
The system of interest is a mid-size industrial scale, pulverized-coal boiler (OP-430, 100% load: 342 MW) and the simulation of this system was carried out using a Large Eddy Simulation -Computational  ...  One of the most difficult challenges in combustion modelling is to accurately predict flow turbulence with its large range of active length \& time scales.  ...  The system of interest is a mid-size industrial scale, pulverized-coal boiler (OP-430, 100% load: 342 MW) and the simulation of this system was carried out using a Large Eddy Simulation -Computational  ... 
doi:10.6084/m9.figshare.9889454 fatcat:dwboyfy5ibhjnbwzx65wqtjil4

Coherent Computational Analysis of Large-Scale Explosions and Fires in Complex Geometries – From Combustion Science to a Safer Oil and Gas Industry

Erik Rian Kjell, Trond Evanger, Erling Vembe Bjørn, Inge Lilleheie Nils, Brynjar Lakså, H. Hjertager Bjørn, F. Magnussen Bjørn
2016 Chemical Engineering Transactions  
The KFX™simulation technology includes the industrial fire simulation code KAMELEON FIREEX KFX® and the industrialgas explosion simulation code EXSIM™, both extensively validated.  ...  The present paper demonstrates and discusses the development of a coherent technology for both gas explosion and fire safety assessment in the oil and gas industry based on the Eddy Dissipation Concept  ...  Acknowledgments The authors gratefully acknowledge the long-term extensive support by major partners in the development and industrialization of KFX™, namely Statoil, Total, ENI, ConocoPhillips, Gassco  ... 
doi:10.3303/cet1648030 doaj:a984fbf7cc5e4bdabdb896d2c1a50d21 fatcat:m7u7xiv5fzcnparroc6zuevzca

Introduction to a series of featured articles: "Multiphase computational fluid dynamics for industrial processes"

Dmitry Eskin, Jos Derksen
2011 Canadian Journal of Chemical Engineering  
Models for small-scale turbulence are used to alleviate the computational burden and make simulations of large-scale industrial turbulent flows possible.  ...  Direct simulations aim at fully resolving the micro-scale including the behaviour (motion, deformation, breakup, coalescence,  ...  Models for small-scale turbulence are used to alleviate the computational burden and make simulations of large-scale industrial turbulent flows possible.  ... 
doi:10.1002/cjce.20520 fatcat:a24ildupiffovhyhegn2vt5ebm

Large eddy simulation of unsteady turbulent flow in a semi-industrial size spray dryer

F. J. Jongsma, F. Innings, M. Olsson, F. Carlsson
2013 Dairy Science and Technology  
at industrial scales.  ...  This work demonstrates the feasibility of LES for a spray dryer of semi-industrial scale and the ability of LES to predict large-scale motions.  ...  The present report is aimed firstly at demonstrating the feasibility of LES simulation of a spray dryer of semi-industrial scale and secondly at an initial exploration of large scale features of the flow  ... 
doi:10.1007/s13594-012-0097-y fatcat:rqjtjru66nhqdhlgjbk2b2c23q

Numerical simulation of biomass growth in OKTOP®9000 reactor at industrial scale

Dmitry Gradov, Mei Han, Petri Tervasmäki, Marko Latva-Kokko, Johanna Vaittinen, Arto Pihlajamäki, Tuomas Koiranen
2018 Industrial & Engineering Chemistry Research  
Gas−liquid drag force is modified to simulate effects of liquid turbulence and bubble swarms. Resolved steady state multiphase hydrodynamics is used to simulate the fermentation process.  ...  The 800 m 3 industrial scale reactor is equipped with a radial impeller, designed by Outotec Oy for gas dispersion in the draft tube reactor.  ...  Power number (N p ) measured at an industrial OKTOP®9000 reactor was shared by Outotec Co for validating the large-scale CFD model (see section 2.2).  ... 
doi:10.1021/acs.iecr.8b02765 pmid:30416255 pmcid:PMC6219852 fatcat:c5vdumcnuzf4zaufzg2j7in23a

"A Review of Computational Fluid Dynamics (CFD) Simulations of Mixing in the Pharmaceutical Industry"

Andrej Pohar
2020 Biomedical Journal of Scientific & Technical Research  
and its use has expanded into many industrial sectors.  ...  /down operation of laboratory and industrial mixing vessels.  ...  the need for laboratory and large-scale operation.  ... 
doi:10.26717/bjstr.2020.27.004494 fatcat:d4eahxrm45gkbciia6rqt6qdlu

Lattice-Boltzmann Based Large-Eddy Simulations Applied to Industrial Flows [chapter]

Jos Derksen
2002 Lecture Notes in Computer Science  
In the large-eddy approach to turbulence modeling, the Smagorinsky subgrid-scale model, supplemented with wall damping, is applied exclusively. The assumptions underlying the model are discussed.  ...  A procedure for simulating single-phase, turbulent fluid flow based on the lattice-Boltzmann method is described.  ...  Introduction The performance of many industrial processes relies on turbulent flows.  ... 
doi:10.1007/3-540-46043-8_72 fatcat:gaknxsmjovgetgydlroqereixu

Computational Analysis of Large-Scale Fires in Complex Geometries – a Means to Safeguard People and Structural Integrity in the Oil and Gas Industry

B.F. Magnussen, K.E. Rian, B. Grimsmo, N.I. Lilleheie, R.N. Kleiveland, B.E. Vembe
2013 Chemical Engineering Transactions  
It includes a brief review of the concept and its physical basis which is implemented together with other models into a dedicated fire simulation tool, KAMELEON FIREEX KFX®.  ...  The present paper demonstrates and discusses the development of a coherent technology for fire safety assessment in the oil and gas industry based on the Eddy Dissipation Concept (EDC) by Magnussen.  ...  Examples from large-scale industry applications are given.  ... 
doi:10.3303/cet1331133 doaj:4a7f42b09a5e46fdbb1f4840b9c480f1 fatcat:fs2qn4tkfncjxo5lcaf6ofdiwu

Numerical investigation to reduce environmental emissions from manufacturing industries

Miloua Hadj
2021 Zenodo  
From the present numerical simulation the carbon dioxide appears to be the best candidate as tracer gas and Simulation (LES) methods, which directly calculate the large-scale turbulent structures and reserve  ...  A detailed look at results is beyond the scope of analysis to determine optimal CO2 emission.  ...  In LES the large scale motions ̅ (x, t) (large eddies) of turbulent flow are computed directly and only small scale (sub-grid scale (SGS)) motions ́( ⃗ ) are modeled, resulting in a significant reduction  ... 
doi:10.5281/zenodo.4625344 fatcat:qx5h5svomvho7fd2u3q2ovfjiy

Simulation of environmental flows: Similarities and differences from technological flows

J.H. Ferziger
2003 Computers and Mathematics with Applications  
An important goal of smaller scale simulations is to provide the parameterizations to be used in the large scale simulations; this task is made very difficult by the large number and range of parameters  ...  Another issue that makes simulation of environmental flows very different from simulation of industrial flows is that, in a large fraction of cases, one needs to predict the actual future state of the  ... 
doi:10.1016/s0898-1221(03)90018-6 fatcat:gq4q2o3op5fxdg6ohyu6srbag4

Large eddy simulation of complex turbulent flows: Physical aspects and research trends

Li Jiachun
2001 Acta Mechanica Sinica  
turbulent flows in industry and natural environment.  ...  In the current paper, we have primarily addressed one powerful simulation tool developed during the last decades Large Eddy Simulation (LES), which is most suitable for unsteady three-dimensional complex  ...  The simulation of turbulent flows within and above canopy was performed by Dr. Z.T. Xie, to whom the author is grateful for his contribution.  ... 
doi:10.1007/bf02487457 fatcat:b6kex4jzubayvcfxvjth7w4ocu

Large eddy simulation of a turbulent buoyant helium plume

Philip Smith, Michal Hradisky, Jeremy Thornock, Jennifer Spinti, Diem Nguyen
2011 Proceedings of the 2011 companion on High Performance Computing Networking, Storage and Analysis Companion - SC '11 Companion  
At the Institute for Clean and Secure Energy at the University of Utah we are focused on education through interdisciplinary research on high-temperature fuel-utilization processes for energy generation  ...  We also work closely with the government agencies and private industry companies to promote rapid deployment of new technologies through the use of high performance computational tools.  ...  Large Eddy Simulation is a turbulence model that provides a much greater degree of resolution of physical scales than the more common Reynolds-Averaged Navier Stokes models.  ... 
doi:10.1145/2148600.2148671 dblp:conf/sc/SmithHTSN11 fatcat:rvunadmsgnfgnphh5gf5niq27q

Large-Eddy Simulation of Single-Phase Flow Dynamics and Mixing in an Industrial Crystallizer

J.J. Derksen, K. Kontomaris, J.B. McLaughlin, H.E.A. Van den Akker
2007 Chemical engineering research & design  
This paper assesses the feasibility of using a computationally efficient large-eddy simulation (LES) technique to quantify the fine scale turbulent structure in an industrial crystallizer.  ...  It was found that the simulations adequately resolved the highly anisotropic fine-scale turbulence generated by the strong interaction between the impeller, the various other internals and the vessel wall  ...  Scale-up effects were examined by performing simulations at three Reynolds numbers, 14 000, 82 000 and 350 000.  ... 
doi:10.1205/cherd06025 fatcat:clrnz24vtndlxeg32gfhi6rltq

The microscopic modelling of hydrodynamics in industrial crystallisers

A ten Cate, J.J Derksen, H.J.M Kramer, G.M van Rosmalen, H.E.A Van den Akker
2001 Chemical Engineering Science  
This simulation was done with a lattice-Boltzmann scheme with a Smagorinsky sub-grid-scale turbulence model (c Q was 0.11) on approximately 35.5;10 grid nodes.  ...  For this purpose, the simulation of the internal #ow of an 1100 l draft tube ba%ed crystalliser at a Reynolds number of 240,000 is presented.  ...  Large eddy simulation For the simulation of #ows at industrially relevant Reynolds numbers (i.e. at turbulent conditions) direct simulation of the #ow is not feasible and turbulence modelling is required  ... 
doi:10.1016/s0009-2509(00)00433-4 fatcat:g2t7ykb67rhobb2niwbmuy6ee4

Numerical simulation of geophysical turbulence

Joel H Ferziger, Jeffrey R Koseff, Stephen G Monismith
2002 Computers & Fluids  
A large number of direct numerical and large eddy simulations of turbulent stratified flows that are mainly of interest in environmental fluid mechanics and geophysics that have been made over that last  ...  The differences between simulations of geophysical flows and flows of direct interest to engineers are discussed in some detail.  ...  For industrial or engineering flows, this leaves one with the choice of doing large eddy simulations (LES) or computations based on the Reynolds averaged Navier-Stokes (RANS) equations which employ one  ... 
doi:10.1016/s0045-7930(01)00066-4 fatcat:o6m5f5hzfveivda4zqqn2bcaqy
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