WOSUB: A Subchannel Code for Steady-State and Transient Thermal-Hydraulic Analysis of BWR Fuel Pin Bundles. Volume I. Model Description

摘要

The WOSUB-codes are spin-offs and extensions of the MATTEO-code. The series of three reports describes WOSUB-I and WOSUB-II in their respective status as of July 31, 1977. Volume II will not be available from NTIS. This report introduces the drift-flux and vapor diffusion models employed by the code, discusses the solution method and reviews the constitutive equations presently built into the code. Wherever applicable, possible exteriors of the models are indicated especially with due regard of the findings presented in Volume III (Assessment and Comparison).