Bird screen meshes are installed at the air inlet and outlet ducts of spent fuel storage casks to inhibit the intrusion of debris from the external environment. The presence of these screens introduces an additional resistance to air flow through the ducts. In this study, a porous media model was developed to simplify the bird screen meshes. CFD analyses were used to derive and verify the flow resistance factors for the porous media model. Thermal analyses were carried out for concrete storage cask using the porous media model. Thermal tests were performed for concrete casks with bird screen meshes. The measured temperatures were compared with the analysis results for the porous model. The analysis results agreed well with the test results. The analysis temperatures were slightly higher than the test temperatures. Therefore, the reliability and conservatism of the analysis results for the porous model have been verified.

1. 서론
 2. 다공성매질 입력자료 산출
 3. 콘크리트 저장용기의 열해석
  3.1 열해석 모델
  3.2 열해석 결과
 4. 저장용기의 열시험 및 해석결과 비교
  4.1 저장용기 열시험
  4.2 열시험 및 해석결과 비교
 5. 결론
 REFERENCES

• Ju-Chan Lee(한국원자력연구원) | 이주찬 Corresponding Author
• Kyung-Sik Bang(한국원자력연구원) | 방경식
• Woo-Seok Choi(한국원자력연구원) | 최우석
• Ki-Seog Seo(한국원자력연구원) | 서기석
• 고성호(충남대학교) | Sungho Ko