多孔介质发动机再热循环有限时间热力学分析

建立了多孔介质（PM）发动机循环的有限时间热力学模型，对PM循环进行了分析，导出了存在摩擦及传热损失时循环功率与压缩比、效率与压缩比以及功率效率的特性关系，同时由数值计算分析了压缩比、预胀比、传热损失和摩擦损失对循环性能的影响特点。将PM循环与Otto循环进行了比较，结果表明：PM循环的性能要优于Otto循环的性能。

Finite time thermodynamic analysis for heat regenerative cycle in porous medium engine

A finite time thermodynamic model was developed to analyze the cycle in porous medium engine. The relations between the power output with the compression ratio, the efficiency with the compression ratio, and the optimal relation between the power output and the efficiency of the cycle with heat transfer loss and friction like term loss were derived. Moreover, the effects of compression ratio, volume ratio, heat transfer loss and friction like term loss on the performance of the cycle were analyzed by detailed numerical examples. Comparing the performance of the heat regenerative cycle of the PM engine with Otto cycle shows that the performance of the PM cycle is superior to that of the Otto cycle.