Simulation of the two-phase flow through the hole of the submerged perforated sheet

• Published in: 2023 5th International Youth Conference on Radio Electronics, Electrical and Power Engineering (REEPE) Vol. 5; pp. 1 - 6
• Main Authors: Nikulin, Alexander S., Tokarev, Sergey A., Melikhov, Vladimir I.
• Format: Conference Proceeding
• Language: English
• Published: IEEE 16.03.2023
• Subjects: Codes; Fluids; hydraulic resistance; Hydraulic systems; mathematical modeling; Resistance; Shape; Solid modeling; steam generator; submerged perforated sheet; Tracking; two-phase flow
• ISSN: 2831-7262
• DOI: 10.1109/REEPE57272.2023.10086741

The paper is devoted to the study of the features of the flow of a steam-water mixture in a horizontal steam generator, which is one of the main components of nuclear power plants comprising Russian water-water energy reactors. The aim of the study is to calculate the hydraulic resistance of a perforated sheet using the CFD code OpenFOAM and compare it with experimental results. The mathematical model includes Reynolds-averaged equations of motion for an incompressible fluid, supplemented by a semi-empirical turbulence model; the volume of fluid method (VOF) is used for tracking and locating the steam-water interface. Comparison of calculated hydraulic resistances with experimental ones shows a good correspondence, the relative error does not exceed 3% for a single-phase steam flow and 8% for two-phase steam-water flow, respectively. It is established that the flow of a two-phase medium has a complex non-stationary behavior, the resulting dispersed water formations continuously change their shape, fragmentation and coalescence processes occur.