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| 1 | Study on air flow dynamic characteristic of mechanical ventilation of a lung simulator显示文摘As an important life support treatment, mechanical ventilation is usually adopted in clinics. With the development of the res-piratory diagnostic and treatment technologies, air flow dynamics of mechanical ventilation is usually referenced in the evaluation of pulmonary status and assessment of respiratory therapy. In order to improve the ventilation efficiency and provide a reference for pulmonary diagnostics, in this paper, a new mathematical model of mechanical ventilation system was set up. Furthermore, a prototype mechanical ventilation system for an artificial simulating lung was designed and experimentally studied. Lastly, in order to improve the ventilation efficiency and provide a reference for pulmonary diagnostics, the air flow dynamics of the mechanical ventilation system was illustrated through simulation and experimental studies. The study can be helpful to the optimization of the mechanical ventilation system. | NIU JingLong SHI Yan CAO ZhiXin CAI MaoLin CHEN Wei ZHU Jian XU WeiQing | 2017 | Science China(Technological Sciences)2017，60，2： | 8 |
| 2 | 场协同理论在聚合物加工中的应用显示文摘对场协同强化传热理论在聚合物加工中的应用进行了探索性研究。采用数值计算方法分析了聚合物塑化系统中不同螺杆结构的流动与传热特性,对螺纹元件、Maddock 元件、销钉元件进行了传热分析,验证了场协同原理在聚合物非牛顿流体强化传热中的可行性。基于场协同理论,提出了一种新型螺杆结构——扭转元件,并对 2 种扭转元件构型进行了场协同强化传热分析。结果表明,场协同原理可以很好地解释高黏度非牛顿流体的强化传热现象,以此为理论基础设计的新型扭转结构能够较好地改善速度场与温度梯度场的协同性,提高对流换热系数,强化对流换热性能。 | 鉴冉冉 谢鹏程 丁玉梅 杨卫民 | 2019 | 塑料2019，48，3： | 0 |
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