船舶机舱在不同送风形式下的气流组织数值模拟

Numerical Simulation of Air Distribution in Ship Engine Room under Different Air Supply Modes

针对某船舶机舱由于热源众多而存在热环境复杂的问题,采用计算CFD方法,对斜向下送风和垂直向下送风2种典型送风形式下的舱室气流组织进行数值模拟,分析典型截面的速度场及温度场,结果表明,斜向下送风和垂直向下送风下舱室的平均温度均能达到设计要求。斜向下送风形式相对于垂直向下送风形式,设备壁面临近区域的最高温度降低约44.4%,所以该送风形式更有利于高温设备的壁面临近区域温度控制及散热。

In order to solve the problem of complicated thermal environment in a ship engine room due to numerous heat sources,the CFD technology was used to simulate the air distribution in the cabin under two typical air supply forms,oblique downward air supply and vertical downward air supply,and the velocity field and temperature field of typical sections were analyzed.The results showed that the average cabin temperature under both oblique and vertical downward air supply can meet the design requirements.Compared with the vertical downward air supply,the maximum temperature of the adjacent area of the equipment wall by using oblique air supply decreases by about 44.4%,so this type of air supply is more conducive to temperature control and heat dissipation.