Validation of a FLUENT CFD model for hydrogen distribution in a containment

https://catatanstudi.files.wordpress.com/2009/11/2008-validation-of-the-cfx4-cfd-code-for-containment-thermal-hydraulics_houkema.pdf

Validation of the CFX4 CFD code for containment thermal-hydraulics

https://www.oecd-nea.org/nsd/csni/cfd/workshops/CFD4NRS-3/technical-papers/12/12.3%20_Containment.pdf

Interaction of a light gas stratified layer with an air jet coming from below: Large scale experiments and scaling issues

The French Institut de Radioprotection et de Surete Nucleaire (IRSN) and the German Gesellschaft fur Anlagen und Reaktorsicherheit mbH (GRS) have been jointly developing for several years a system of calculation codes (or “integral” code), ASTEC (Accident Source Term Evaluation Code), to simulate the complete scenario of a hypothetical severe accident in a nuclear light water reactor from the initiating event through the possible radiological release of fission products out of the containment, the so-called “source term.” Very intensive validation work has been performed in recent years by IRSN and GRS on the V1 versions by comparison of code calculations with results of more than 160 international experiments. Complementary validation was performed by 30 partners of the SARNET European Network of Excellence in the 6th Framework Programme of the European Commission, where ASTEC is considered the European reference code. The global status of validation is good for most phenomena, as shown by severa...

Validation Status of the ASTEC Integral Code for Severe Accident Simulation

Intrinsic transport and combustion issues of steam-air-hydrogen mixtures in nuclear containments

The ISP-47 programme was carried out in two steps: Step 1 was dedicated to code validation using test data from the separate effects facility TOSQAN (7 m3 volume) and the larger-scale MISTRA facility (100 m3 volume). In the TOSQAN tests, wall condensation, steam injection in air or air/helium atmospheres, and buoyancy were addressed under well-controlled initial conditions in a simple geometry. The interactions of phenomena such as condensation/stratification and turbulence/buoyancy were addressed in the MISTRA tests. Both TOSQAN and MISTRA were specifically designed to produce data for CFD codes with state-of-the-art instrumentation. The TOSQAN benchmark was open, whereas the MISTRA benchmark was blind. Step 2 was devoted to code validation using an experiment in the multi-compartment ThAI facility (60 m3 volume) with different steam and helium injection phases, transient stratification and mixing conditions in the atmosphere, development of natural convection, wall condensate distribution, fog formation, and transient thermal response of heat-conducting walls. From this experiment, detailed measurement data on velocity, temperature and gas concentration fields are provided for detailed code validation. The ThAI benchmark covered three sets of calculations: completely blind, partly blind and open.

International standard problem ISP-47 on containment thermal hydraulics - Final report

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International standard problem ISP-47 on containment thermal hydraulics - Final report