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J. Korean Ceram. Soc. > Volume 58(2); 2021 > Article
Journal of the Korean Ceramic Society 2021;58(2): 184-191.
doi: https://doi.org/10.1007/s43207-020-00082-5
Application of CFD simulation to silicon carbide deposition for nozzles with funnel
Jin-Won Seo, Kyoon Choi
Engineering Ceramic Center, KICET, Icheon 17303, Korea
Correspondence  Kyoon Choi ,Email: knchoi@kicet.re.kr
Received: August 3, 2020; Revised: September 3, 2020   Accepted: September 8, 2020.  Published online: March 31, 2021.
ABSTRACT
Carbon/silicon carbide composites (C/SiC) have been extensively studied for structural components in extreme environments because of their excellent thermal shock resistance and specific strength at high temperatures. In order to overcome their oxidizing problems, chemical vapor deposition (CVD) coating of silicon carbide to C/SiC has become an important technical issue especially for the specific shapes such as nozzles and pipes that withstand supersonic flows of exhaust gases and particles. The growth rate prediction based on the CFD simulation was carried out to effectively coat the inner surface of a nozzle. For the inner coating of nozzels, a funnel that guides the reaction gases to the nozzles was introduced in order to accelerate the SiC coating. As the CFD simulation predicted, the growth rate of silicon carbide with the funnel is 5 times higher than that without the funnel.
Key words: Silicon carbides · Chemical vapor deposition · Anti-ablation · CFD simulation
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