Simulation of Chemical Vapor Infiltration and Deposition Based on 3D Images: A Local Scale Approach
A numerical solution for the simulation of chemical vapor infiltration (CVI) of ceramic matrix composites is presented. This computational model requires a 3D representation of the preform. Gas transport and chemical reaction are simulated by a Monte Carlo random walk technique. The developed algori...
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Veröffentlicht in: | Chemical vapor deposition 2011-12, Vol.17 (10-12), p.312-320 |
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | A numerical solution for the simulation of chemical vapor infiltration (CVI) of ceramic matrix composites is presented. This computational model requires a 3D representation of the preform. Gas transport and chemical reaction are simulated by a Monte Carlo random walk technique. The developed algorithm can also be used for the determination of effective transport and reaction properties in a porous medium. It is firstly validated by considering the simple case of diffusion and reaction in a flat pore. Results of infiltration of an actual fiber arrangement are described and discussed. Extension to deposition on a thin substrate with asperities is also studied
A numerical tool based on Monte Carlo Random Walks in 3D images is presented as a solution for direct simulation of chemical vapor infiltration and of chemical vapor deposition over a patterned substrate. The code can also be used for determination of effective transport and reaction properties in a porous medium. Validations and application cases are shown and discussed. |
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ISSN: | 0948-1907 1521-3862 |
DOI: | 10.1002/cvde.201106895 |