机舱热发散控制用通风参数影响的模拟分析

针对船舶机舱发电机组、锅炉等高负荷热源，研究采用空气射流通风技术进行热发散控制。结合机舱的现场条件，建立机舱热发散控制的物理模型，选用计算流体力学的标准k-ε模型作为数值模拟计算模型。采用正交试验法对稳态条件下的送风速度、喷嘴高度、送风温度、送风湿度、排风速度等因素进行了模拟试验分析。试验得出不同通风因素对热发散控制效果影响的显著性大小排序：送风温度、送风速度、喷嘴高度、排风速度。结合试验分析结果提出了热发散通风控制的优方案和考虑节能后再优化调整方案。

Simulation and analysis of ventilation parameters for controling heat dissipation in engine room

For the high load heat of generator and boiler in ship engine room, considering the air jet ventilation technology to control heat dissipation effectively. Combined with the actual conditions of the engine room, a physical model for controlling heat dissipation were established, selecting criteria k-εmodel as the numerical model based on computational fluid dynamics. The factors that influence the average temperature, including air velocity, nozzle height, air temperature, air humidity, ventilation rate, were numerically analyzed in steady state condition by orthogonal test. The test on heat dissipation effects of different ventilation parameters reflected significant size:air temperature, air speed, nozzle height, exhaust velocity. Through analyzing the test results, the paper provided optimal combinations of heat dissipation and adjusting optimal combination condition after considering energy-saving.