Files in this item



application/pdfXu_Wu.pdf (1MB)
(no description provided)PDF


Title:Coupling of system thermal-hydraulics and Monte-Carlo method for a consistent thermal-hydraulics-reactor physics feedback
Author(s):Wu, Xu
Advisor(s):Kozlowski, Tomasz
Department / Program:Nuclear, Plasma, & Rad Engr
Discipline:Nuclear, Plasma, Radiolgc Engr
Degree Granting Institution:University of Illinois at Urbana-Champaign
Subject(s):Monte Carlo
Code coupling
Abstract:The present thesis describes the coupling of a three-dimensional continuous-energy Monte Carlo reactor physics code, Serpent, with thermal-hydraulics safety analysis code RELAP5-3D. Thermal-hydraulics and reactor physics coupling is commonly used in deterministic methods, for example RELAP5/PARCS and TRACE/PARCS. It has been well-validated for a number of steady and transient problems. The coupling of Monte-Carlo and reactor thermal-hydraulics will significantly improve the MC predictive capability and its applicability to a wide range of reactor problems of practical interest, as right now it is limited to fixed-feedback conditions. In this thesis, the coupled Serpent/RELAP5-3D code capability is demonstrated by the improved axial power distribution of single assemblies, achieved by a consistent thermal-hydraulics feedback. The code coupling is demonstrated for the UO2 and MOX single assemblies based on the OECD-NEA/NRC PWR MOX-UO2 Core Transient Benchmark [1]. Comparisons of calculation results using the coupled code with those from the individual codes in stand-alone mode, also with deterministic methods, specifically heterogeneous multi-group transport code DeCART, show that the coupling produces more precise results.
Issue Date:2013-08-22
Rights Information:Copyright 2013 Xu Wu
Date Available in IDEALS:2013-08-22
Date Deposited:2013-08

This item appears in the following Collection(s)

Item Statistics