skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Experiment on large scale plume interaction with a stratified gas environment resembling the thermal activity of a autocatalytic recombiner

Abstract

Computational Fluid Dynamics codes (CFD) are increasingly being used to simulate containment conditions after various transient accident scenarios. Consequently, the reliability of such codes must be tested against experimental data. Such validation experiments related to gas mixing and hydrogen transport within containment compartments addressing the effect of heat source are presented in this paper. The experiments were conducted in the large-scale thermal-hydraulics PANDA facility located at the Paul-Scherrer-Inst. (PSI) in Switzerland, in the frame of the OECD/SETH-2 project. A 10 kW electric heater simulating the thermal activity of the autocatalytic recombiner was activated at full power in a containment vessel at the top of which a thick helium layer is initially present. The hot plume interacts with the bottom of the helium layer which is slowly eroded until complete break up at 1350 s. After final erosion of the layer a strong temperature and concentration gradient is maintained in the vessel below the heater inlet as well as in the adjacent vessel below the interconnecting pipe. A detailed characterization of the operating heater suggests the presence of cold gas ingress at the outlet that affects the flow in the chimney. This can be of concern if present in a realmore » PAR unit. (authors)« less

Authors:
; ; ;  [1]
  1. Thermal Hydraulics Laboratory, Nuclear Energy and Safety Dept., Paul Scherrer Institut, 5232 Villigen PSI (Switzerland)
Publication Date:
Research Org.:
American Nuclear Society, 555 North Kensington Avenue, La Grange Park, IL 60526 (United States)
OSTI Identifier:
22107803
Resource Type:
Conference
Resource Relation:
Conference: ICAPP '12: 2012 International Congress on Advances in Nuclear Power Plants, Chicago, IL (United States), 24-28 Jun 2012; Other Information: Country of input: France; 19 refs.; Related Information: In: Proceedings of the 2012 International Congress on Advances in Nuclear Power Plants - ICAPP '12| 2799 p.
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; 22 GENERAL STUDIES OF NUCLEAR REACTORS; COMPUTERIZED SIMULATION; CONTAINERS; CONTAINMENT; HEAT SOURCES; HEATERS; HELIUM; HYDROGEN; HYPOTHETICAL ACCIDENTS; LAYERS; MIXING HEAT; NUCLEAR POWER PLANTS; PIPES; RELIABILITY; SWITZERLAND; THERMAL HYDRAULICS; VALIDATION

Citation Formats

Mignot, G., Kapulla, R., Paladino, D., and Zboray, R. Experiment on large scale plume interaction with a stratified gas environment resembling the thermal activity of a autocatalytic recombiner. United States: N. p., 2012. Web.
Mignot, G., Kapulla, R., Paladino, D., & Zboray, R. Experiment on large scale plume interaction with a stratified gas environment resembling the thermal activity of a autocatalytic recombiner. United States.
Mignot, G., Kapulla, R., Paladino, D., and Zboray, R. Sun . "Experiment on large scale plume interaction with a stratified gas environment resembling the thermal activity of a autocatalytic recombiner". United States.
@article{osti_22107803,
title = {Experiment on large scale plume interaction with a stratified gas environment resembling the thermal activity of a autocatalytic recombiner},
author = {Mignot, G. and Kapulla, R. and Paladino, D. and Zboray, R.},
abstractNote = {Computational Fluid Dynamics codes (CFD) are increasingly being used to simulate containment conditions after various transient accident scenarios. Consequently, the reliability of such codes must be tested against experimental data. Such validation experiments related to gas mixing and hydrogen transport within containment compartments addressing the effect of heat source are presented in this paper. The experiments were conducted in the large-scale thermal-hydraulics PANDA facility located at the Paul-Scherrer-Inst. (PSI) in Switzerland, in the frame of the OECD/SETH-2 project. A 10 kW electric heater simulating the thermal activity of the autocatalytic recombiner was activated at full power in a containment vessel at the top of which a thick helium layer is initially present. The hot plume interacts with the bottom of the helium layer which is slowly eroded until complete break up at 1350 s. After final erosion of the layer a strong temperature and concentration gradient is maintained in the vessel below the heater inlet as well as in the adjacent vessel below the interconnecting pipe. A detailed characterization of the operating heater suggests the presence of cold gas ingress at the outlet that affects the flow in the chimney. This can be of concern if present in a real PAR unit. (authors)},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2012},
month = {7}
}

Conference:
Other availability
Please see Document Availability for additional information on obtaining the full-text document. Library patrons may search WorldCat to identify libraries that hold this conference proceeding.

Save / Share: