Sample problem calculations related to two-phase flow transients in a PWR relief-piping network

Autor:	A.H. Wiedermann, Y.W. Shin
Rok vydání:	1981
Předmět:	Engineering Source code Piping business.industry Nuclear engineering media_common.quotation_subject Boundary (topology) Pressurizer Forensic engineering Fluid dynamics Relief valve Boundary value problem Two-phase flow business media_common
DOI:	10.2172/5906946
Popis:	Two sample problems related with the fast transients of water/steam flow in the relief line of a PWR pressurizer were calculated with a network-flow analysis computer code STAC (System Transient-Flow Analysis Code). The sample problems were supplied by EPRI and are designed to test computer codes or computational methods to determine whether they have the basic capability to handle the important flow features present in a typical relief line of a PWR pressurizer. It was found necessary to implement into the STAC code a number of additional boundary conditions in order to calculate the sample problems. This includes the dynamics of the fluid interface that is treated as a moving boundary. This report describes the methodologies adopted for handling the newly implemented boundary conditions and the computational results of the two sample problems. In order to demonstrate the accuracies achieved in the STAC code results, analytical solutions are also obtained and used as a basis for comparison.
Databáze:	OpenAIRE
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