小型喷雾冷却系统单相区传热特性的数值模拟Numerical simulation on single-phase heat transfer characteristics of small spray cooling systems
潘艳秋,杜宇杰,张春超,俞路
摘要(Abstract):
针对某小型喷雾冷却系统开发的需要,采用计算流体力学(CFD)方法建立喷雾冷却系统数理模型,在对传热过程进行单因素分析的基础上,采用正交试验模拟方法进行系统的多参数优化。结果表明:当热流密度一定时,系统传热性能随喷雾体积流量增大、喷雾高度和工质温度降低而增强;主要操作参数对传热性能影响的显著程度排序为:热流密度>工质温度>喷雾体积流量>喷雾高度;根据冷却装置设计要求,模拟获得冷却系统的最优操作参数为:喷雾体积流量19.80 L·h~(-1)、喷雾高度6 mm、工质温度10℃、热流密度30 W·cm~(-2)。建立的模型对于喷雾冷却单相区的模拟有良好的推广应用价值,可为小型喷雾冷却系统的设计提供指导。
关键词(KeyWords): 喷雾冷却;数值模拟;传热;正交试验
基金项目(Foundation): 国家自然科学基金(61705230)
作者(Author): 潘艳秋,杜宇杰,张春超,俞路
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