基于群体平衡原理的液化天然气水下泄漏流动沸腾多流体模型的分析与应用  

Analysis and Application of Population Balance Based Multi-fluid Model in Boiling Flow of LNG Leaking Underwater

作　　者：张彬[1] 吴宛青[1] 封星[1] 于桂峰[1] 

机构地区：[1]大连海事大学轮机工程学院,辽宁大连116026

出　　处：《船海工程》2009年第5期76-80,共5页Ship & Ocean Engineering

摘　　要：为模拟LNG水下泄漏流动沸腾过程,将群体平衡原理与多流体模型耦合为一套新的多流体模型,该模型以传统多流体模型为基础,纳入了群体平衡原理及MUSIG模型,并考虑了碰撞、聚合和相变等因素对气泡直径及数量密度的影响。使用新模型与传统多流体模型进行数值模拟,结果比较得出:新模型的模拟结果更加符合实际的气泡产生与生长发展过程,能够在较大范围内对两相流参数的多维分布和变化进行有效预测。For modeling boiling flow of LNG leaking underwater, a new multi-fluid model was proposed by coupling the classical multi-fluid model and population balance model （PBM）, which was based on the classical multi-fluid model, includes the PBM and MUSIG model, as well as the bubble coalescence model , bubble break-up model and phase change model. By comparing the simulation results of new and classical multi-fluid model, the new model simulation results were better agree with the actual progress of bubble born and development, and it can make a good prediction in a wider range than the classical model.

关 键 词：液化天然气 水下泄漏 多流体模型 群体平衡 流动沸腾 

分 类 号：U698.7[交通运输工程—港口、海岸及近海工程] TB61[交通运输工程—船舶与海洋工程]