摘要
为了防止在极地低温的影响下,船舶海水冷却系统换热管道发生冰堵,保障船舶的航行安全,以海水冷却系统中水平换热管道为研究对象,热焓多孔介质模型为基础建立数学模型,利用CFD软件FLUENT对换热管道的海水-冰晶两相流体进行换热特性数值仿真。仿真结果表明流速对管道换热的影响显著。在以流速为被控量的管道两相流动过程中,为避免管道中冰晶堆积形成堵塞,需要选择合适的流速范围,以确保最优的换热效果,使船舶冷却水系统的正常换热,从而保证动力系统的正常运行。
In order to prevent ice from jamming the heat-transfer pipe in the seawater cooling system of a vessel under the influence of polar temperatures and to safeguard the navigational safety of the ship,a mathematical model is constructed of the level heat-exchange pipeline in the seawater cooling system in the form of a porous-medium enthalpy model. The computational fluid dynamics software Fluent is used to simulate the heat-transfer characteristics of two-phase seawater/ice flow in the heat-transfer pipeline. The simulation results show that the flow rate has a significant effect on the heat transfer. To avoid ice accumulating and blocking the pipeline during such two-phase flow,it is necessary to select an appropriate range of flow rate to ensure optimal heat transfer. This facilitates normal heat transfer in the ship＇s cooling water system,thereby assuring normal operation of the power system.
出处
《哈尔滨工程大学学报》
EI
CAS
CSCD
北大核心
2017年第6期887-891,共5页
Journal of Harbin Engineering University
基金
国家自然科学基金项目(51479152)
关键词
极地船
海水-冰晶
FLUENT
流速
换热
冰堵
polar vessel
seawater and ice
FLUENT
flow velocity
heat transfer
ice blocking
