Three-gas mixture plume inducing mixing and stratification in a multi-compartment containment

Paladino, Domenico; Zboray, Robert; Benz, Pascal; Andreani, Michele

doi:10.1016/j.nucengdes.2008.07.014

Cited by 29 publications

(19 citation statements)

References 8 publications

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“…More detailed presentations of the experimental results are reported for the near wall plume tests by , and Paladino et al 2010a, for the free plumes by Zboray and Paladino (2010), for the horizontal jet series by Paladino et al (2010b), and for the Three-gas mixture test by Paladino et al (2010c). A detailed analysis of the PANDA SETH tests, carried out at PSI using GOTHIC, is reported by , and .…”

Section: Panda Test Resultsmentioning

confidence: 99%

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Toward a CFD-grade database addressing LWR containment phenomena

Paladino

Andreani

Zboray

et al. 2012

Nuclear Engineering and Design

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The large-scale, multi-compartment PANDA facility (located at PSI in Switzerland) is one of the stateof-the-art facilities which is continuously upgraded to progressively match the requirements of CFD-grade experiments. Within the OECD/SETH projects, the PANDA facility has been used for the creation of an experimental database on basic containment phenomena e.g. gas mixing, transport, stratification, condensation. In the PANDA tests, these phenomena are driven by large scale plumes or jets. In the paper a selection of the SETH PANDA experimental results is presented. Examples of analytical activities performed at PSI using the GOTHIC, CFX-4 and CFX-5 codes will be used to illustrate how the spatial and temporal resolutions for the measurement grid in PANDA tests are adequate for CFD code assessment and validation purposes.

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Section: Panda Test Resultsmentioning

confidence: 99%

“…In general, the results obtained with GOTHIC for the entire test showed that the prediction of transients characterized by complex evolution of the density difference between compartments is a challenging task, even for a code having 3D capabilities. A more detailed analysis of Test 25 is reported by Paladino et al (2010c) and …”

Section: Test 17mentioning

confidence: 99%

Toward a CFD-grade database addressing LWR containment phenomena

Paladino

Andreani

Zboray

et al. 2012

Nuclear Engineering and Design

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“…A large validation effort against light gas experiments has been made by Dr. Andreani and Dr. Paladino at PSI (Paladino et al, 2008;Andreani et al, 2009Andreani et al, , 2012Andreani and Smith, 2003;Andreani and Erkan, 2010). The version of the code used in the present research is GOTHIC 8.0 (QA).…”

Section: The Gothic Codementioning

confidence: 99%

“…In the Frame of the OECD SETH project, conducted in PSI, the stratification build up was investigated (De Cachard et al, 2007;Andreani and Paladino, 2010;Paladino et al, 2008). OECD-SETH 2 project performed research on the erosion and break-up of a stratified atmosphere (Andreani et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Analysis of a gas stratification break-up by a vertical jet using the GOTHIC code

Fernández-Cosials

Varas

López-Alonso

2016

Nuclear Engineering and Design

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“…These codes are thus limited to analyze simple scenarios due to computational expenses. In addition, studies in the European Union show that current CFD analyses can not accurately predict the gases distribution for complex mixing cases (Paladino et al, 2010). Therefore, it is desired to find other high fidelity and efficient gas mixing and stratification methods to improve the accuracy of nuclear safety analyses at reasonable computational cost.…”

Section: Introductionmentioning

confidence: 99%

Validation of hydrogen gas stratification and mixing models

Zhao

2015

Annals of Nuclear Energy

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a b s t r a c tTwo validation benchmarks confirm that the BMIX++ code is capable of simulating unintended hydrogen release scenarios efficiently. The BMIX++ (UC Berkeley mechanistic MIXing code in C++) code has been developed to accurately and efficiently predict the fluid mixture distribution and heat transfer in large stratified enclosures for accident analyses and design optimizations. The BMIX++ code uses a scaling based one-dimensional method to achieve large reduction in computational effort compared to a 3-D computational fluid dynamics (CFD) simulation. Two BMIX++ benchmark models have been developed. One is for a single buoyant jet in an open space and another is for a large sealed enclosure with both a jet source and a vent near the floor. Both of them have been validated by comparisons with experimental data. Excellent agreements are observed. The entrainment coefficients of 0.09 and 0.08 are found to fit the experimental data for hydrogen leaks with the Froude number of 99 and 268 best, respectively. In addition, the BIX++ simulation results of the average helium concentration for a enclosure with a vent and a single jet agree with the experimental data within a margin of about 10% for jet flow rates ranging from 1.21 Â 10 À4 to 3.29 Â 10 À4 m 3 /s. Computing time for each BMIX++ model with a normal desktop computer is less than 5 min.Published by Elsevier Ltd.

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Three-gas mixture plume inducing mixing and stratification in a multi-compartment containment

Cited by 29 publications

References 8 publications

Toward a CFD-grade database addressing LWR containment phenomena

Toward a CFD-grade database addressing LWR containment phenomena

Analysis of a gas stratification break-up by a vertical jet using the GOTHIC code

Validation of hydrogen gas stratification and mixing models

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