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中文摘要：
臭氧层破坏与温室效应的不断加剧,使得应用自然工质CO_2的应用研究成为世界的研究热点.针对CO_2滚动活塞式膨胀机,本文运用FLUENT和EES两种模拟方法,分别对膨胀机内部流动过程、降压过程、泄漏过程、摩擦过程进行模拟分析,可以看出,两种方法压力分析结果一致,因此,每个方法所分析的其它过程均可作为彼此的补充,从而指导今后膨胀机的设计与研究。
英文摘要：
For the deterioration of ozone depletion and greenhouse effect,research on the application of CO_2 has become hotspot all over the world.In view of the CO_2 rolhng piston expander,this article analyzes the interior flowing process,decompression process,leaking process and friction process in the expander using two simulation methods,FLUENT and EES.It can be seen that the pressure changing results between the two methods are similar.Therefore,the results of one method can be the supplement to the other method,and both the two simulation methods can be instruction to the future research and design.
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