Improvements in contact resolution of arbitrarily shaped bodies in CFD-DEM solver
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F22%3A43925781" target="_blank" >RIV/60461373:22340/22:43925781 - isvavai.cz</a>
Výsledek na webu
<a href="https://sscheconference.sk/full_papers/396.pdf" target="_blank" >https://sscheconference.sk/full_papers/396.pdf</a>
DOI - Digital Object Identifier
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Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Improvements in contact resolution of arbitrarily shaped bodies in CFD-DEM solver
Popis výsledku v původním jazyce
The automotive industry faces increasing demand for pollution reduction. Present methods and technologies developed for exhaust gas after treatment must be optimised and improved to meet rising demands. Such optimisation can be accomplished with a mathematical model describing the washcoating deposition of active catalytic material into a structure of catalytic filter. This process is currently described only with empirical models. The irregular solid particles of catalyst are dispersed in fluid in the form of slurry during washcoating. The fluid and solid phases are mutually affected by the solid particles coming into contact with each other and with the substrate. Such conditions require a detailed description of particles and fluid. This can be achieved with the coupling of CFD and DEM methods. However, the vast majority of currently available CFD-DEM solvers replace solid particles with spheres. Nevertheless, the real particles often cannot be simplified to spheres, and the irregularity of their shape must be considered. In this work, we present the extension to the custom-developed CFD-DEM solver designed to ensure accurate solution of particle collisions without a significant burden on computation time, the so-called virtual mesh. The principle of the proposed virtual mesh is to increase the resolution of particle collisions without any modifications to the computational mesh. The results of this approach are presented in a pilot study comparing the trajectory of particles and normal contact force for a plastic collision between two spheres. The test was carried out for the standard sphere DEM, dynamic mesh refinement and virtual mesh.
Název v anglickém jazyce
Improvements in contact resolution of arbitrarily shaped bodies in CFD-DEM solver
Popis výsledku anglicky
The automotive industry faces increasing demand for pollution reduction. Present methods and technologies developed for exhaust gas after treatment must be optimised and improved to meet rising demands. Such optimisation can be accomplished with a mathematical model describing the washcoating deposition of active catalytic material into a structure of catalytic filter. This process is currently described only with empirical models. The irregular solid particles of catalyst are dispersed in fluid in the form of slurry during washcoating. The fluid and solid phases are mutually affected by the solid particles coming into contact with each other and with the substrate. Such conditions require a detailed description of particles and fluid. This can be achieved with the coupling of CFD and DEM methods. However, the vast majority of currently available CFD-DEM solvers replace solid particles with spheres. Nevertheless, the real particles often cannot be simplified to spheres, and the irregularity of their shape must be considered. In this work, we present the extension to the custom-developed CFD-DEM solver designed to ensure accurate solution of particle collisions without a significant burden on computation time, the so-called virtual mesh. The principle of the proposed virtual mesh is to increase the resolution of particle collisions without any modifications to the computational mesh. The results of this approach are presented in a pilot study comparing the trajectory of particles and normal contact force for a plastic collision between two spheres. The test was carried out for the standard sphere DEM, dynamic mesh refinement and virtual mesh.
Klasifikace
Druh
D - Stať ve sborníku
CEP obor
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OECD FORD obor
20302 - Applied mechanics
Návaznosti výsledku
Projekt
<a href="/cs/project/GA22-12227S" target="_blank" >GA22-12227S: Počítačový návrh katalytických filtrů zohledňující vliv zachycených částic</a><br>
Návaznosti
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Ostatní
Rok uplatnění
2022
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název statě ve sborníku
Proceedings 48th International Conference of the Slovak Society of Chemical Engineering SSCHE 2022 and Membrane Conference PERMEA 2022
ISBN
978-80-8208-070-7
ISSN
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e-ISSN
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Počet stran výsledku
8
Strana od-do
1-8
Název nakladatele
Slovenská technická univerzita v Bratislave, Fakulta chemickej a potravinárskej technológie (FCHPT STU)
Místo vydání
Bratislava
Místo konání akce
Tatranske Matliare
Datum konání akce
23. 5. 2022
Typ akce podle státní příslušnosti
EUR - Evropská akce
Kód UT WoS článku
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