精品文档---下载后可任意编辑DBS 曳力模型与湍流模型对气液 CFD 模拟的影响的开题报告摘要：本文主要讨论了 DBS 曳力模型和湍流模型对气液两相流的 CFD 模拟的影响。通过构建气液两相流模型，采纳 FLUENT 软件进行数值模拟，分别运用了 DBS 曳力模型和湍流模型对其进行模拟，对比分析了两种模型的模拟结果差异。实验结果表明，在气-液两相流模拟中，DBS 曳力模型在预测细小气泡运动方面表现更加准确，而湍流模型则在预测大气泡运动方面表现更优异。关键词：DBS 曳力模型；湍流模型；气液 CFD 模拟；数值模拟；液体填充率。Abstract：This paper mainly studies the influence of DBS drag force model and turbulence model on CFD simulation of gas-liquid two-phase flow. By constructing a gas-liquid two-phase flow model and using FLUENT software for numerical simulation, DBS drag force model and turbulence model were respectively used to simulate the flow, and the differences between the simulation results of the two models were compared and analyzed. The experimental results show that in the simulation of gas-liquid two-phase flow, DBS drag force model performs more accurately in predicting the movement of small bubbles, while the turbulence model performs better in predicting the movement of large bubbles.Keywords: DBS drag force model; turbulence model; gas-liquid CFD simulation; numerical simulation; liquid filling rate.
