TY - JOUR
T1 - Containment model library of the Apros process simulation software
T2 - an overview of development and validation work
AU - Silde, Ari
AU - Ylijoki, Jukka
AU - Ahtinen, Esa
N1 - Funding Information:
Development of ACON started in the early 1990s when the principle models and the “heart” of the solution system were coded. During the 2000s, the main work has proceeded by adding the modeling capabilities of engineering safety systems relevant to various containment types and geometries. At this time, the preliminary validation process was also initiated. Nearly 50 experiments performed in Finnish and international test facilities have been calculated so far. In addition, about 10 code-to-code comparison cases have been carried out. Most of the validation calculations are performed in the framework of the Finnish National Research Program, SAFIR, funded by the National Nuclear Waste Management Fund (VYR) and VTT.
Funding Information:
Most of the validation work was carried out within the Finnish National Research Program SAFIR. The work was funded by the Finnish National Nuclear Waste Management Fund (VYR) and VTT.
Publisher Copyright:
© 2019 The Authors
PY - 2019
Y1 - 2019
N2 -
The Apros CONtainment model library (ACON) is an add-on product of the Apros
®
(Advanced Process Simulation Environment) Nuclear software cooperatively developed by VTT and Fortum. ACON is suitable for comprehensive simulation of containment phenomena during nuclear reactor design basis accidents and, to some extent, severe accidents. The lumped parameter approach applied enables flexible modeling of various containment/compartment systems. ACON is a suitable tool for both safety analysis use and accurate training simulator purposes with real time calculation speed. The Apros containment model can be used fully separately, or a containment simulation can be coupled with other thermal-hydraulic calculation to create a complete simulation model of a power plant, including e.g. the reactor and turbine systems. Modeling of relevant engineering safety features is also included. The paper focuses on the modeling features of ACON and the related validation work which includes the calculations of nearly 50 experiments performed in various test facilities. The validation methodology is discussed and the validation calculations are summarized as a validation matrix. The paper provides a detailed presentation of selected validation cases, in which the main studied phenomena are related to general containment thermal-hydraulics, spray effects, blowdown modeling, steam condensation on a structure, steam stratification in containment, and ice melting with associated natural circulation flow. Finally, an example of applications is described. Severe accident containment phenomena are out of the scope of this paper. The results of the validation demonstrate that Apros can be used for analyses of containment thermal-hydraulic behavior including related aspects of engineering safety systems in various containment geometries.
AB -
The Apros CONtainment model library (ACON) is an add-on product of the Apros
®
(Advanced Process Simulation Environment) Nuclear software cooperatively developed by VTT and Fortum. ACON is suitable for comprehensive simulation of containment phenomena during nuclear reactor design basis accidents and, to some extent, severe accidents. The lumped parameter approach applied enables flexible modeling of various containment/compartment systems. ACON is a suitable tool for both safety analysis use and accurate training simulator purposes with real time calculation speed. The Apros containment model can be used fully separately, or a containment simulation can be coupled with other thermal-hydraulic calculation to create a complete simulation model of a power plant, including e.g. the reactor and turbine systems. Modeling of relevant engineering safety features is also included. The paper focuses on the modeling features of ACON and the related validation work which includes the calculations of nearly 50 experiments performed in various test facilities. The validation methodology is discussed and the validation calculations are summarized as a validation matrix. The paper provides a detailed presentation of selected validation cases, in which the main studied phenomena are related to general containment thermal-hydraulics, spray effects, blowdown modeling, steam condensation on a structure, steam stratification in containment, and ice melting with associated natural circulation flow. Finally, an example of applications is described. Severe accident containment phenomena are out of the scope of this paper. The results of the validation demonstrate that Apros can be used for analyses of containment thermal-hydraulic behavior including related aspects of engineering safety systems in various containment geometries.
KW - Apros
KW - Containment modelling
KW - Containment thermalhydraulics
KW - Nuclear safety
KW - Nuclear safety analyses
KW - Validation
UR - http://www.scopus.com/inward/record.url?scp=85063898776&partnerID=8YFLogxK
U2 - 10.1016/j.pnucene.2019.03.031
DO - 10.1016/j.pnucene.2019.03.031
M3 - Article
AN - SCOPUS:85063898776
SN - 0149-1970
VL - 116
SP - 28
EP - 45
JO - Progress in Nuclear Energy
JF - Progress in Nuclear Energy
ER -