基于CFD的船舶货舱通风数值模拟

摘要

The ventilation system of a container ship's cargo hold has been simulated based on the actual ventilation conditions by utilizing CFD. Reasonable numerical method is used based on the characteristics of ventilation system. And the air flow is described through the tracing method of Lagrangian particle. In consideration of the influence of the number and facing directions of holes on air supply pipes, three different design plans are simulated. Finally the best one is found by comparing different design plans. The simulation results show that the CFD technology is conducive to design of ventilation in a vessel cargo and provides a powerful tool for improving the performance of ventilation system.%以某集装箱船的货舱通风系统为研究对象,根据船舶舱室的通风系统的特点,采用合理的数值模拟方法,并利用拉格朗日粒子示踪的方法描述舱室中的气体流动状况.在此基础上,分析比较3种不同的通风设计方案,通过对比分析研究送风管上开孔朝向和数目对通风效果的影响,确定对通风最有利的方案.模拟结果表明,应用CFD技术进行通风系统分析,可以很好地从流场的分布特性以及空气粒子的运动追踪等方面来评估设计方案的优劣,为通风系统的设计、优化提供有力的工具.