摘要
为强化水下热滑翔机的固液相变传热性能,提出将泡沫金属嵌入水下热滑翔机换热管内的方法,通过数值模拟分析泡沫金属的材料种类和结构对相变速率、潜深、温度分布、换热管中心温度、体积变化率的影响。结果表明:不同材料种类和结构的泡沫金属均可以显著提高固液相变速率;孔隙率为0.98的泡沫铝性能最优,不仅满足水下热滑翔机的运行要求,而且使得水下热滑翔机下潜阶段相变材料凝固时间减少78.7%,上浮阶段相变材料熔化所需时间减少93.1%,一个循环所需时间减少90.0%,潜深减少78.7%,这有利于增大水下热滑翔机的循环速率。
In order to enhance the solid-liquid phase change heat transfer performance in underwater thermal gliders,a method of embedding metal foam into the heat exchange tube of underwater thermal gliders is proposed,and the effects of different metal foam materials and structures on the phase change rate,the diving depth,the temperature distribution,the center temperature of the heat exchange tube and the volume change rate are numerically investigated.The results show the following:the metal foams with different materials and structures all can increase the solid-liquid phase change rate;the performance of aluminum foam with the porosity of 0.98 is optimal,not only meeting the operation requirements of underwater thermal gliders,but also making the phase-change material solidification time in the diving stage reduced by 78.7%,the phase-change material melting time in the floating stage reduced by 93.1%,the time for a cycle reduced by 90.0%,and the diving depth reduced by 78.7%,which is beneficial to increase the cycle rate of underwater thermal gliders.
作者
彭浩
陈亚琴
李美林
PENG Hao;CHEN Yaqin;LI Meilin(Merchant Marine College,Shanghai Maritime University,Shanghai 201306,China)
出处
《上海海事大学学报》
北大核心
2022年第4期113-119,共7页
Journal of Shanghai Maritime University
基金
上海市自然科学基金(19ZR1422300)。
关键词
水下热滑翔机
海洋温差能
相变材料
泡沫金属
underwater thermal glider
ocean thermal energy
phase change material
metal foam
