Steam condensation simulation in a scaled IRWST-ADS simulator with GOTHIC 8.1

Estévez-Albuja, Samanta; Varas, Gonzalo Jiménez; Issa, S. Al; Macián‐Juan, Rafael; Fernández-Cosials, Kevin

doi:10.1016/j.nucengdes.2018.04.020

Cited by 5 publications

(3 citation statements)

References 20 publications

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“…A large validation effort against light gas experiments has been performed with 2D and 3D models, as can be seen in (Andreani et al, 2012(Andreani et al, , 2010Hultgren et al, 2014;Paladino et al, 2010). Recent applications of GOTHIC 3D models involve research on hydrogen safety (Fernández-Cosials et al, 2017), steam discharges into a pool (Estévez-Albuja et al, 2018;Gallego-Marcos et al, 2018), filtered containment venting systems (Fernández-Cosials et al, 2018), depressurization transients in the High Temperature Gas Reactor (HTGR) (Yildiz et al, 2018), or the Fukushima accident analysis (Ozdemir et al, 2015). The code version used in the present study is GOTHIC 8.2 QA (EPRI, 2016b).…”

Section: The Gothic Codementioning

confidence: 99%

3D containment modeling of PWR-KWU Trillo NPP with the GOTHIC code

Fernández-Cosials

Estévez-Albuja

Varas

et al. 2019

Annals of Nuclear Energy

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Containment safety analysis is a field in expansion given the complex phenomenology developed during an accident, and the recent code capabilities improvement. In this paper, a modeling strategy to create complex containments with porous CFDs in a single control volume is presented. This methodology involves using solely Computer Aided Design (CAD) tools, to manage the geometrical model, instead of using the GOTHIC code pre-processor interface. This methodology is applied to Trillo NPP (KWU 3 loops) where a LBLOCA is simulated to illustrate its capabilities. The results are compared against a Lumped Parameters model obtaining similar average values. Finally, a sensitivity analysis is made to quantify the influence of the modeling simplifications showing a small dependence. This implies that this modeling strategy is able to recreate models accurately, with an affordable computational cost, and with a time saving improvement, which nowadays is the main bottleneck for 3D containment models.

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Section: The Gothic Codementioning

confidence: 99%

3D containment modeling of PWR-KWU Trillo NPP with the GOTHIC code

Fernández-Cosials

Estévez-Albuja

Varas

et al. 2019

Annals of Nuclear Energy

Self Cite

View full text Add to dashboard Cite

show abstract

“…GOTHIC can use two different models to calculate the turbulent terms: the Prandtl mixing length model and the two-equation k-ε model. The mixing length model (MIX-L) provides reasonable results for situations involving uniform geometries and flow fields [92]. Variations of the k-ε model available in GOTHIC are:…”

Section: Nodalization and Geometry Approximationmentioning

confidence: 99%

“…For the aforementioned fluid fields, GOTHIC calculates the relative velocities between the separate but interacting fluid fields, including the effects of two-phase slip on pressure drop. The heat transfer between phases and contact surfaces is calculated as interface source terms [92].…”

Section: Source Termsmentioning

confidence: 99%