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Influence of filter domain size on the simulation of gas-liquid filtration in nonwoven and foam media

Abishek, S.; Mullins, B.; King, A.; Kasper, G.; Heikamp, W.

Abstract:
The process of coalescence mist filtration in liquid- or gas-liquid systems is strongly controlled by the dynamics of the multi-component fluid transport at the pore- or fibrescales and its interactions with the filter media. However, current designs of mist filters are largely based on empirical data or on single-fibre filtration theory, primarily because of the complexity and difficulty in making accurate measurements at such (small) length scales. Current advancements in high performance computing provide a unique possibility to understand the dynamics of such flows using highly resolved droplet and interface capturing computational fluid dynamics (CFD) simulations - which can provide vital data for application-specific optimization of filter media. However it is important that the spatio-temporal resolutions required to accurately numerical model the fluid dynamics of micro or nano-fibre filtration processes at full size of the filters may typically demand simulations to be run with several hundred million (to over a billion) computational cells and long run-times. Hence, for reduced design lead times as well as computational cost, it is desirable to keep the size of the filter domain to a minimum, while ensuring that the largest fluid structures and scales are captured in the simulations. ... mehr

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Volltext §
DOI: 10.5445/IR/1000063397
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Zugehörige Institution(en) am KIT Institut für Mechanische Verfahrenstechnik und Mechanik (MVM)
Publikationstyp Proceedingsbeitrag
Jahr 2016
Sprache Englisch
Identifikator urn:nbn:de:swb:90-633977
KITopen-ID: 1000063397
Erschienen in Filtech 2016, 11. - 13. Oktober 2016, Köln [G5 - Mist and Droplet Separation II]
Schlagworte Aerosol, Mist filtration, Foam, Fibre, CFD, VOF
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