Validation of the STEG code using PGV experiments on hydrodynamics of horizontal steam generator
| Autor: | S M Nikonov, A. A. Nerovnov, Oleg I. Melikhov, Tung Thanh Le, V.I. Melikhov |
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| Rok vydání: | 2020 |
| Předmět: |
Pressure drop
Nuclear and High Energy Physics Test facility 020209 energy Mechanical Engineering Boiler (power generation) Experimental data 02 engineering and technology Mechanics 01 natural sciences 010305 fluids & plasmas Nuclear Energy and Engineering Drag Bundle 0103 physical sciences 0202 electrical engineering electronic engineering information engineering General Materials Science VVER Safety Risk Reliability and Quality Waste Management and Disposal Geology |
| Zdroj: | Nuclear Engineering and Design. 356:110380 |
| ISSN: | 0029-5493 |
| DOI: | 10.1016/j.nucengdes.2019.110380 |
| Popis: | The results of the validation of the STEG code using the experiments on the PGV test facility are presented. The PGV test facility (Electrogorsk, Russia) is a slice of the upper part of the horizontal steam generator for Russian type VVER reactors. The main aim of the tests is to investigate the influence of submerged perforated sheets (SPSs) with uniform and non-uniform perforation degrees on the hydrodynamics of two-phase water-steam flows. The brief description of the STEG code based on the 3D two-fluid model is presented. The crucial constitutive laws that allow an accurate simulation of the PGV tests are the correlation for SPS pressure drop and the interfacial drag force model. The SPS pressure drop is calculated with empirical correlation obtained at the PGV experimental data. It is demonstrated that three different models of interfacial drag force are necessary in different regions of the test facility (above the SPS, below the SPS and zone between the tube bundle and the SPS). The formulations of the models are presented. All experiments are analyzed using the STEG code. The peculiarities of the spatial two-phase flows have been established, and a quantitative comparison with experimental data (SPS pressure drops and void fractions) has been performed. It can be argued that the results generally indicate the relatively good predictive ability of the STEG code. |
| Databáze: | OpenAIRE |
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