The paper focuses on the development, implementation, and initial validation of the NEK-2P two-fluid two-phase model. Recent extensions of the Extended Boiling Framework (EBF) models are presented, including the implementation of a four-field two-phase topology which replaces the previous two-field two-phase approach. The paper presents results of recent NEK-2P analyses of several CHF experiments. Good agreement between the simulated wall temperatures and measured data is observed. The simulation results predict well both the dryout location and post dryout wall temperature magnitudes, illustrating the ability of the NEK-2P code and extended EBF models to simulate the CHF phenomena for a range of thermal-hydraulic conditions.
- Nuclear Engineering Division
Modeling of Two-Phase Boiling Flow and Critical Heat Flux With the NEK-2P CFD Code
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Tentner, A, Vegendla, P, Tomboulides, A, Obabko, A, Merzari, E, & Shaver, D. "Modeling of Two-Phase Boiling Flow and Critical Heat Flux With the NEK-2P CFD Code." Proceedings of the 2017 25th International Conference on Nuclear Engineering. Volume 8: Computational Fluid Dynamics (CFD) and Coupled Codes; Nuclear Education, Public Acceptance and Related Issues. Shanghai, China. July 2–6, 2017. V008T09A016. ASME. https://doi.org/10.1115/ICONE25-66529
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