斜盘发动机缸内热力过程数值分析研究  

Numerical Analysis on In-cylinder Thermodynamic Process of Swash-plate Engine

作　　者：张方方[1] 张振山[1] 梁伟阁[1] 王郑力[1] 

机构地区：[1]海军工程大学兵器工程系,武汉430033

出　　处：《机械工程学报》2013年第16期114-120,共7页Journal of Mechanical Engineering

基　　金：国家部委基金资助项目(4011002010102)

摘　　要：为研究斜盘发动机缸内工质热功转换规律,基于喷管原理推导出工质流入、流出气缸的质量流率,其次基于发动机运动学分析,重点改进工质对外散热模型,使其同时考虑活塞周期性覆盖的影响以及缸套内壁面的轴向温差;对气缸开口系统列能量守恒方程完成缸内工质热力学详尽模型的建立。利用该模型编写计算程序,完成某型斜盘发动机缸内热力过程仿真。仿真所得示功图与参考文献提供的国外软件计算示功图一致性较好,且各仿真曲线反映对应参数在缸内6个热力过程中的变化规律,验证模型建立与仿真的正确性。模型求得的示功图可为斜盘发动机动力学分析提供初始数据。To study thermal-power conversion law of in-cylinder working substance of swash-plate engine,mass flow rate of working substance is calculated by nozzle principle firstly,and then heat release model of working substance is improved with considering the effect of seasonal reciprocating piston and the axial temperature difference of in-cylinder wall based on kinematics analysis for swash-plate engine,and thermodynamics model of in-cylinder working substance is established by energy conservation equation at last.The in-cylinder working process simulation of a swash-plate engine is realized by use of the calculation program based on the thermodynamics model.The simulation dynamometer card is consistent with that one calculated by Russian software in reference,and the simulation curves consist with the variation law of performance parameters during the six thermodynamic processes well,which is the validation of the model and simulation.The dynamometer card calculated by the established model provides initial parameters for dynamic simulation for swash-plate engine.

关 键 词：斜盘发动机 热力学 运动学 散热 数值分析 

分 类 号：TJ63[兵器科学与技术—武器系统与运用工程]