서지주요정보
정상가동시 핵연료의 핵분열생성물 기체방출에 대한 전산모형 = A computer modelling of fission gas release in $UO_2$ fuel during normal operation
서명 / 저자 정상가동시 핵연료의 핵분열생성물 기체방출에 대한 전산모형 = A computer modelling of fission gas release in $UO_2$ fuel during normal operation / 유동한.
저자명 유동한 ; You, Dong-Han
발행사항 [서울 : 한국과학기술원, 1985].
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등록번호

4103407

소장위치/청구기호

학술문화관(문화관) 보존서고

MNE 8510

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초록정보

A computer code to predict fission gas release in $UO_2$ fuel during normal operations was developed. In this model, the fission gas release was analyzed by solving the diffusion equation with the production rate and diffusion coefficient varying with time during reacter operations. The following two steps were taken for the analysis of the fission gas release in the model: a) released from fuel grains to grain-boundaries b) released from grain-boundaries to internal free volume of the fuel. For numerical calculation of intragranular model, time-dependent governing equations coupled with the behaviors of the gas atoms and the bubbles in the grain matrix were derived by using a suitable grain-boundary loss term. These coupled equations were solved by the successive iteration method. The flux of gas atoms arriving at the grain-boundary was computed with grain-boundary loss term. The continual growth of grain-boundary bubbles, resulting from the accumulation of gas atoms on the grain-boundary, leads to grain-boundary interlikage. Then, all gas atoms that subsequently reach the grain-boundary were assumed to be released. The model also deals with the mechanism of knock out release which is independent of the fuel temperature. The results predicted by the present model were then compared with the experimental data of DIDO reacter fuels obtained by Bellamy and Rich. It was found that the computational results well agreed with the experimental data. This agreement suggests that the present model can be used in analyzing fuel element performance for nuclear fuel design and safety analysis.

서지기타정보

서지기타정보
청구기호 {MNE 8510
형태사항 vi, 65 p. : 삽도 ; 26 cm
언어 한국어
일반주기 부록 : A, 확산계수가 시간의 함수인 확산방정식 풀이해. - B, Fission induced resolution process
저자명의 영문표기 : Dong-Han You
지도교수의 한글표기 : 석호천
지도교수의 영문표기 : Ho-Chun Suk
학위논문 학위논문(석사) - 한국과학기술원 : 핵공학과,
서지주기 참고문헌 : p. 57-60
주제 Fission gases.
Fission products.
핵 연료. --과학기술용어시소러스
혼합 산화물 연료. --과학기술용어시소러스
핵분열 생성물. --과학기술용어시소러스
가스 방출. --과학기술용어시소러스
방사능 방출. --과학기술용어시소러스
Nuclear fuels.
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