Browse

Implementation of the Sanchez-Pomraning Double Heterogeneity Treatment Method in DeCART

Cited 0 time in Web of Science Cited 0 time in Scopus
Authors
Pogosbekyan, Leonid; Joo, Han Gyu
Issue Date
2007-09
Publisher
서울대학교 원자로 물리 연구실 = Reactor Physics Laboratory,. Seoul National University
Keywords
Double HeterogeneityMOCDeCARTSubgroup
Abstract
The Sanchez-Pomraning method to resolve the double heterogeneity (DH) in the method of
characteristics (MOC) transport calculation, which we call DH MOC, is implemented into
the DeCART code for the application of the DeCART code to the gas cooled reactors
involving particulate triso fuels. Since the DH MOC requires essentially no modification of
the existing MOC calculation module other than providing the effective macroscopic cross
section and the effective source constructed from the stochastic material properties and
micro regional source, implementation is focused on the variable structure changes to
incorporate micromaterials and the pre and post processing for the DH MOC calculation.
The DH MOC solver is incorporated first in the shielded resonance cross section
determination and then as in the normal MOC transport solution. As a prerequisite for the
implementation of the DH MOC solver, a method to determine the volume to volume
collision probabilities (CP) for a sphere is derived in detail. The verification of the CP
routines and other code modifications are performed using various analytical solutions. The
final verification of the DH MOC is performed by comparing the DeCART DH MOC results
with the MCNP results obtained with an explicit representation of the particulate fuels. The
effect of double heterogeneity on the resonance cross section and on the normal MOC
transport calculation are assessed separately.
Language
English
URI
http://hdl.handle.net/10371/8793
Files in This Item:
Appears in Collections:
College of Engineering/Engineering Practice School (공과대학/대학원)Dept. of Energy Systems Engineering (에너지시스템공학부)Nuclear Engineering (원자핵공학전공)Others_원자핵공학과
  • mendeley

Items in S-Space are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse