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http://dx.doi.org/10.7234/composres.2019.32.1.056

Numerical Simulation of Diffusion and Flow in Fabrication of Carbon/Carbon Composite Using Chemical Vapor Infiltration  

Kim, Hye-gyu (Department of Mechanical Engineering, Ulsan National Institute of Science and Technology (UNIST))
Ji, Wooseok (Department of Mechanical Engineering, Ulsan National Institute of Science and Technology (UNIST))
Jo, Namchun (Agency for Defense Development)
Park, Jonggyu (Agency for Defense Development)
Publication Information
Composites Research / v.32, no.1, 2019 , pp. 56-64 More about this Journal
Abstract
In this paper, a model is developed to simulate carbon/carbon composite fabrication using chemical vapor infiltration, considering density and porosity change in the preform and multi-step hydrocarbons reactions. The model considers the preform as a porous medium whose diffusion and flow properties changes due to the porosity. To verify the theoretical model, two numerical analyses were performed for the case that the flow inside the preform is zero and the case that the flow inside the preform is calculated by fluid mechanics. The numerical results showed good agreement with the experimental data.
Keywords
Carbon/carbon composites; Chemical vapor infiltration; Numerical analysis;
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