鱼雷燃烧室气—液—固三相耦合换热数值仿真  

Simulation of Torpedo Combustion Chamber Thermal-Fluid-SolidCoupling Heat Transfer

作　　者：陈肯 冯要飞 宗潇 伊进宝 肖炎彬 史小锋 CHEN Ken;FENG Yaofei;ZONG Xiao;YI Jinbao;XIAO Yanbin;SHI Xiaofeng(The 705 Research Institute,China State Shipbuilding Corporation Limited,Xi’an 710077,China)

机构地区：[1]中国船舶集团有限公司第705研究所,陕西西安710077

出　　处：《水下无人系统学报》2023年第3期442-450,共9页Journal of Unmanned Undersea Systems

摘　　要：为了提高鱼雷燃烧室的冷却换热性能,文中基于热流固耦合数值计算方法,开展了鱼雷燃烧室内气-液-固三相冷却换热过程数值仿真,得到了燃烧室在2种不同冷却水流道结构下的流场分布情况,并对不同流道结构下的冷却换热性能进行了分析。研究结果表明,随着冷却区域底部流道数量的增加,冷却区域底部湍流强度减弱,局部高温区变小;随着冷却区域出口流道数量的增加,出口处的湍流、漩涡及局部高温区逐渐消失,冷却区域底部由水流对冲而产生的截流现象消失;增加流道数量的方式使换热效率提升,且增加底部流道数量的方式对换热效率的提升效果更明显;通过增加燃烧室流道数量使冷却换热功率提升了约8.5%,壳体的最高温度降低了11 K。文中的研究结果可对鱼雷燃烧室冷却结构的设计及改进提供参考。To improve the cooling heat transfer performance of torpedo combustion chambers,a numerical simulation of thethermal-fluid-solid cooling heat transfer process in a torpedo combustion chamber was performed based on the thermal-fluid-solid coupling numerical calculation method.The flow field distribution was obtained under two types of cooling waterchannel structures in the combustion chamber,and the cooling heat transfer performance under these different water channelstructures was analyzed.The results indicated that,with an increase in the number of the water channels at the bottom ofcooling area,the turbulent intensity decreased,and size of the local overheating area reduced.With an increase in the numberof outlet water channels at the bottom of the cooling area,the turbulence,vortex,and local overheating area at the outletgradually disappeared,and the block flow at the bottom of the cooling area caused by water impact also disappeared.Furthermore,the heat transfer efficiency was improved by increasing the number of water channels,with a larger number ofwater channels at the bottom yielding better improvement in the heat transfer efficiency.Increasing the number of waterchannels in the combustion chamber raised the cooling heat transfer power about 8.5%,and the maximum temperature of theshell decreased by 11 K.The results of this study can provide a reference for the design and improvement of the coolingstructure of torpedo combustion chambers.

关 键 词：鱼雷 燃烧室 热流固耦合 换热性能 

分 类 号：TJ630.32[兵器科学与技术—武器系统与运用工程]