2026-10-13T20:43:16Z https://www.scidb.cn/oai

10.57760/sciencedb.hjs.00610 2026-01-21T11:31:52Z

2026-01-21 CFD study on the bubble dynamics characteristics of water-cooled reactors based on AMR doi:10.57760/sciencedb.hjs.00610 en Background: Computational Fluid Dynamics (CFD) is a crucial tool for analyzing bubble dynamics in water-cooled reactors. Current studies on gas-liquid two-phase flow in such reactors predominantly employ fixed grids, which require a large number of grid cells to ensure 3D simulation accuracy at the gas-liquid interface, leading to high computational resource demands. Purpose: This study aims to apply Adaptive Mesh Refinement (AMR) technology to reduce computational cost while maintaining accurate capture of bubble dynamics in 3D simulations of water-cooled reactors. Methods: The AMR technique, which dynamically adjusts grid density, was combined with the VOF (Volume of Fluid) model. Three-dimensional numerical simulations were performed on typical bubble motion and phase change scenarios. Results: The research findings demonstrate that the AMR technique can effectively reduce the overall number of grid cells while appropriately refining the mesh at the gas-liquid interface. This approach accurately captures the kinematic characteristics of bubbles. Conclusions: The AMR technique shows good applicability for three-dimensional simulation of single bubbles, as it can lower computational costs while ensuring accurate prediction of bubble motion behavior. Adaptive Mesh Refinement; CFD; Bubble Dynamics; Two-Phase Flow; VOF Yang Ting Liu Ziyi PUBLIC https://creativecommons.org/licenses/by/4.0/ dataset Science Data Bank