基于MOOSE框架的五方程两相流分析程序开发

Application of High-order Analysis Code Solving Five-equation Two-phase Flow Problem Based on MOOSE

摘要: 基于多物理场耦合框架MOOSE，采用五方程两相流模型开发了模块化程序ZEBRA，实现了高阶时间、空间离散格式两相流动传热问题的求解。采用Bartolomei开展的垂直圆管过冷沸腾实验对ZEBRA进行验证，在不同热流密度、质量流密度、压力工况下，将程序计算值与实验值进行了数值验证和计算分析。结果表明：ZEBRA中五方程模型预测值与实验值符合良好，沸腾起始点和空泡份额的预测合理，表明ZEBRA初步具备了处理两相流问题的能力。

Abstract: Based on the multiphysics coupling framework MOOSE, the modular analysis code ZEBRA was developed using the fiveequation twophase flow model. The highorder time and space discrete formats were implemented in twophase flow and heat transfer problems. The vertical tube subcooled boiling experiment data carried out by Bartolomei were used to validate ZEBRA. The predicted results by ZEBRA were compared with experimental values in different wall heat flux, mass flux and pressure conditions. The results show that the predicted results of the fiveequation model in ZEBRA are in well agreement with the experimental values. The prediction results of the onset of boiling and void fraction are reasonable, indicating that the twophase flow problems can be preliminarily solved by ZEBRA.