CAJ | 학술논문

某海监船在进行机舱机械通风效用试验时，发现存在舱内气流分布不均、风速梯度变化较大、部分船员操作和活动区域温度偏高等问题。为解决上述问题，利用CFD技术对该船机舱机械通风系统进行数值分析，并提出机舱气流改进方案。随后，选取优化前、后的典型截面进行分析，指出在保证舱内适当负压的情况下可将机械送风改为机械抽风，从而实现机舱进风量增加50%，并消除舱内气流大漩涡和改善气流组织。此外，还提出可在右舷开一个新增风口，以更有效消除气流漩涡，并降低局部温度。结果显示，该优化方案能够满足海船规范要求且施工方便，对于工程设计具有一定的参考价值。
모해감선재진행궤창궤계통풍효용시험시，발현존재창내기류분포불균、풍속제도변화교대、부분선원조작화활동구역온도편고등문제。위해결상술문제，이용CFD기술대해선궤창궤계통풍계통진행수치분석，병제출궤창기류개진방안。수후，선취우화전、후적전형절면진행분석，지출재보증창내괄당부압적정황하가장궤계송풍개위궤계추풍，종이실현궤창진풍량증가50%，병소제창내기류대선와화개선기류조직。차외，환제출가재우현개일개신증풍구，이경유효소제기류선와，병강저국부온도。결과현시，해우화방안능구만족해선규범요구차시공방편，대우공정설계구유일정적삼고개치。
In this paper,the engine room ventilation system is analyzed numerically by utilizing the CFD method,and the optimization design of the marine surveillance ship ventilation is also presented to solve the problem of uneven distribution of airflow,large flow speed gradient,and higher temperature for certain operation and activity areas within the engine room. Specifically,by analyzing typical iso-surfaces, me-chanical inflow is changed to mechanical outflow, which increases the air flux by fifty percent, eliminating the airflow whirlpool and improving the airflow under proper negative pressure conditions. Furthermore,an inlet set is added on the starboard side to better eliminate the whirlpool and reduce the local temperature. All in all,the optimization design successfully meets the specification requirements and is seen to be easi-ly applicable,which is instructive to future engineering design.