(A) nodal expansion method with spatially coupled effects incorporated in the transverse leakage approximation = 새로운 중성자 횡누설 근사법에 의한 노달확장법 연구

Cited 0 time in webofscience Cited 0 time in scopus
  • Hit : 303
  • Download : 0
The objective of this thesis is to develop an accurate and systematic method for the prediction of criticality and spatial power distributions throughout reactors-especially in those regions where strong material discontinuity occurs. For this purpose, a new method for the transverse leakage treatment such that the neutron``s directional behavior between adjacent nodes to be spatially coupled as the cross terms in evaluating the vertex fluxes of a node is developed. The new transverse leakage model is characterized by the space-dependent neutron flux expanded into the spatially nonseparable polynomial. This new model is then introduced into the diffusion equations based on nodal expansion theory to derive the nodal balance equations. This new method is first numerically benchmarked against to the numerical reference solutions and proven its accuracy and wide applicability. The results of the practical application to the KNU-1, BOC-1 core show that the new method greatly improves the spatial power distributions of the conventional methods in the regions of the significant material discontinuity such as in the assemblies adjacent to the core baffle and water reflector. Furthermore, with regards to the overall accuracy in predicting the spatial power distributions, the new method improves the results of the conventional methods.
Advisors
Chang, Moon-Hee장문희
Description
한국과학기술원 : 핵공학과,
Publisher
한국과학기술원
Issue Date
1987
Identifier
66002/325007 / 000841712
Language
eng
Description

학위논문(석사) - 한국과학기술원 : 핵공학과, 1987.8, [ v, 70 p. ]

URI
http://hdl.handle.net/10203/49164
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=66002&flag=dissertation
Appears in Collection
NE-Theses_Master(석사논문)
Files in This Item
There are no files associated with this item.

qr_code

  • mendeley

    citeulike


rss_1.0 rss_2.0 atom_1.0