中文摘要：

在一条可变剖面图 nano 隧道的聚乙烯液体的注射的数字模拟用分子的动力学方法被执行。rheological 行为和聚乙烯液体的结构的性质上的 nano 隧道剖面图和外部力量的效果被调查。吸收的层出现在墙和与增加 nano 隧道的锥角度增加的吸收的层的厚度附近，这被发现。聚乙烯液体的注射距离与增加减少了锥角度和减少的外部力量。在有锥角度 45 的 nano 隧道

英文摘要：

Numerical simulation of injection of polyethylene fluid in a variable cross-section nano-channel was carried out using the mo- lecular dynamics method. The effects of the nano-channel cross-section and the external force on the theological behavior and structural properties of the polyethylene fluid were investigated. It was found that an absorbed layer appeared near the wall and the thickness of the absorbed layer increased with increasing cone angle of the nano-channel. The injection distance of the poly- ethylene fluid decreased with increasing cone angle and decreasing external force. In the nano-channel with cone angle 45°, poly- ethylene particles uniformly filled the whole channel and were stretched along the flow direction. Uniaxial stretching of particles was enhanced when the external force was strengthened, which facilitates injection of the polyethylene fluid into the nano-channel.