S-Space College of Engineering/Engineering Practice School (공과대학/대학원) Dept. of Mechanical Aerospace Engineering (기계항공공학부) Theses (Master's Degree_기계항공공학부)
Development of Equilibrium Flow CFD Code Using CEA Database and Prediction on Ablation of SiC Coating Nozzle : CEA 데이터베이스를 활용한 평형 유동 CFD 코드 개발 및 SiC 코팅 노즐의 삭마량 예측
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- 공과대학 기계항공공학부
- Issue Date
- 서울대학교 대학원
- 학위논문 (석사)-- 서울대학교 대학원 공과대학 기계항공공학부, 2017. 8. 김규홍.
- This study was conducted with the aim such as development of ablation model of SiC due to combustion gas inside nozzle, prediction on ablation of SiC coating nozzle, development of ablation analysis code. For this purpose, equilibrium flow analysis code using CEA database and a structural temperature distribution analysis code had been developed and the reliability of the code had been secured by carrying out the validation process. These codes were coupled by transferring the wall heat flux and wall temperature as boundary conditions to each other, and the flow/structure integrated analysis code was developed. In order to develop the ablation model, the active and passive oxidation characteristics of SiC materials was investigated. The shear erosion model was developed to simulate mechanical ablation and the melting model was developed to simulate thermochemical ablation. The amount of ablation over time was predicted and compared with the measured amount of erosion depth of nozzle test delivered from the Agency for Defense Development.
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