大尺度双体船具有型深和船宽大、辐射噪音小、重量和尺寸要求严格等技术特点，导致其机舱通风系统送风管路过长、回风阻力高、管系布置困难，这极易造成舱内局部风速严重不均、重点区域温度过高以及舱内压力过大等现象。本文以世界最大的6 000吨级双体船的设计为例，利用CFD技术对其机舱通风系统进行数值模拟分析，发现其气相组织在风速、温度和压力等方面存在诸多问题；进一步提出具体改造方案，即增加主甲板送风支路、增加底舱抽风管系和甲板通风开孔，并选取优化前后的典型截面进行气相组织对比分析，验证了优化方案的正确性。该优化方案满足海船规范要求，且成本低、施工方便，对于大尺度双体船通风系统的设计具有一定的参考价值。
Because of the technical characteristics such as big depth and width, low radiation noise, strict weight and size requirements of the large-scale catamaran, cabin ventilation system is too long, the return air resistance is high, and the piping system is difficult to arrange, which is likely to cause serious wind uneven, excessive temperature and pressure. Taking the design of the world's larges 6000T catamaran as an example, this paper used CFD technology to carry out numerical simulation analysis of its ventilation system, and found that its airflow had many problems in speed, temperature and pressure; This paper further proposed a specific plan, which was to increase the main deck duct branch, increase the bottom cabin exhaust ducts and deck exhaust air openings, and selected the typical section before and after optimization to analyze the airflow, and verified the correctness of the plan. The plan meet the requirements of regulations, and had low cost and convenient construction, which had certain reference value for the design of large-scale catamaran ventilation system.
2020,42(1): 75-79 收稿日期：2018-12-16
DOI：10.3404/j.issn.1672-7649.2020.01.015
分类号：U663.82
作者简介：郭昂(1987-),男,硕士研究生,工程师,研究方向为船舶空调和通风系统
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