scholarly journals Numerical Analyses of a Model Water Tank under Strong Earthquake Loadings and Their Experimental Verification

2000 ◽  
Vol 73 (1) ◽  
pp. 36-41
Author(s):  
Wataru SEKI ◽  
Chikahiro MINOWA ◽  
Manabu TOYOSHIMA
Keyword(s):  
Experimental Verification ◽  
Strong Earthquake ◽  
Numerical Analyses ◽  
Water Tank ◽  
Model Water

Stress-Deformation State in the Rock Massif (Illustrated with the Example of Macedonia)

2015 ◽  
Vol 725-726 ◽  
pp. 214-219 ◽  
Author(s):  
Zlatko Zafirovski ◽  
Nikolay Vatin
Keyword(s):  
Geotechnical Properties ◽  
Rock Massif ◽  
Numerical Analyses ◽  
Water Tank ◽  
Surge Tank ◽  
Secondary Stress ◽  
Stability Analyses ◽  
Deformation State ◽  
Stress Deformation ◽  
The Stability

Main goal of this article is to introduce an used methodology of analyses for excavation of surge tank enlargement of HEC MATKA1. The way of combining of the methods for analyses of discontinual and continual media are explained. The main information’s about existing geological and geotechnical properties are also given, as a basis for analytical and numerical analyses. Some of the results from the stability analyses of structural controlled instabilities during excavation of water tank are presented. The newly secondary stress – deformation state as a result from enlargement (excavation) is analysed with program Z-SOIL.

Deposition of Iter Vacuum Vessel Dust Inside the Pressure Suppression System During a Loss of Coolant Accident: Experimental and Numerical Analyses

2021 ◽  
Author(s):  
Miriam Ibba ◽  
Alessio Pesetti ◽  
Michele Raucci ◽  
Flavio Parozzi ◽  
Roberta Lazzeri ◽  
...  
Keyword(s):  
Numerical Simulations ◽  
Numerical Analyses ◽  
Water Tank ◽  
Vacuum Vessel ◽  
Dust Deposition ◽  
Dust Mass ◽  
Water Container ◽  
Dust Distribution ◽  
Experimental Rig ◽  
Suppression System

Abstract This paper deals with an experimental and numerical analysis of the deposition of ITER dust simulant inside a reduced scale Vacuum Vessel Pressure Suppression System (VVPSS) of the International Thermonuclear Experimental Reactor (ITER). This research, funded by the ITER Organization, aims to analyse the dust deposition in a water container relevant for the ITER VVPSS, the dust removal by means of robotised apparatuses and their decontamination efficiency. The experimental rig, built at the Department of Civil and Industrial Engineering (DICI) of the University of Pisa (Italy), is described and the results of a preliminary experimental test are illustrated, underlining that 2 and 82% of dust mass was strongly and lightly bound to the water container surfaces, respectively, and 16 % were not deposited in the water tank. Furthermore, three numerical analyses were carried out implementing a model of the experimental rig in the Enel Code for Analysis of Radionuclide Transport (ECART) to determine the relevance of different parameters on the deposition, resuspension and removal of dust. The numerical simulations allowed to specify dust mass deposition on the different rig components, revealing a strong dust retention (about 66%) in the first part of the injection piping in case of coarse granulometry. Finest lognormal dust distribution was instead able to reach the water container (about 90%). Moreover, the numerical simulations permitted to define more precisely the test matrix and to analyse the experimental results.

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