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Application CFD-LES model for modelling multifluid coal combustion process
[article]
2019
Figshare
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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
2016
Chemical Engineering Transactions
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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"
2011
Canadian Journal of Chemical Engineering
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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
2013
Dairy Science and Technology
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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
2018
Industrial & Engineering Chemistry Research
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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"
2020
Biomedical Journal of Scientific & Technical Research
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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]
2002
Lecture Notes in Computer Science
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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
2013
Chemical Engineering Transactions
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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
2021
Zenodo
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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
2003
Computers and Mathematics with Applications
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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
2001
Acta Mechanica Sinica
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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
2011
Proceedings of the 2011 companion on High Performance Computing Networking, Storage and Analysis Companion - SC '11 Companion
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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
2007
Chemical engineering research & design
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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
2001
Chemical Engineering Science
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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
2002
Computers & Fluids
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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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