摘要
以某新型鱼雷转缸式斜盘发动机为研究对象,利用动网格技术对缸内的热力过程进行了详细的描述,建立了缸内过程流固耦合数值仿真模型,获得了一个循环六个热力过程下缸内燃气的压力和温度分布情况,得到了热端部件壁面温度分布和热应力。数值计算结果表明:缸内过程组织合理;进气过程,热负荷最大;燃气侧热端部件的壁面温度均低于材料的最高允许工作温度;活塞和气缸套的O形圈沟槽壁面温度低于最高允许工作温度;气缸体、气缸套、活塞的热应力满足强度要求。
Using dynamic mesh technology, In-cylinder working process of the engine is detailedly designed in this article regarding the new swashplate revolving cylinder piston engine. We establish the numeral simulation model of the engine working process based on fluid-structure interaction, the pressure and temperature distribution of the In-cylinder gas in the six thermal process is obtained, and the temperature distribution of the hot end components is presented. The results show that the working process of the engine is reasonably organized. The biggest thermal load appears in the intake flow process. The wall temperature of the gas side is lower than the maximum allowable working temperature of the material. The temperatures of piston and cylinder sleeve of the O ring groove wall are below the maximum allowable working temperature of O ring material, which can ensure high temperature gas and cooling water reliable seals. The thermal stress of the cylinder, cylinder sleeve and piston can satisfy the strength limit.
作者
李鑫
杨赪石
彭博
Li Xin;Yang Chengshi;Peng Bo(The 705 Research Institute,China Shipbuilding Industry Corporation,Xi＇an 710077,China)
出处
《系统仿真学报》
CAS
CSCD
北大核心
2018年第9期3514-3525,共12页
Journal of System Simulation
关键词
转缸式斜盘发动机
动网格
热力过程
流固耦合
swashplate revolving cylinder engine
dynamic mesh
working process
fluid-structure interaction
