未组织的网孔上的一个并置的有限体积方法被介绍模仿聚合物的粘弹性的流动融化与粘滞经过限制柱体的驱散。为模拟的组成的方程是非等温的 FENE-P 模型,它从分子的理论被导出。宏观的地上的温度效果(例如,速度,应力) 并且显微镜的地(例如,分子的取向,变丑,段) 被等温、非等温的状况的比较调查。这调查显示上升引起了由的那温度粘滞自从它在聚合物的宏观、显微镜的性质上有重要效果,驱散不应该被忽视融化。
A collocated finite volume method on unstructured meshes is introduced to simulate the viscoelastic flow of the polymer melt with viscous dissipation past a confined cylinder.The constitutive equation for the simulations is non-isothermal FENE-P model,which is derived from the molecular theories.The temperature effect on the macroscopic fields(e.g.,velocity,stress) and microscopic fields(e.g.,molecular orientation,deformation,stretch) is investigated by comparison of isothermal and non-isothermal situations.This investigation indicates that temperature rise caused by viscous dissipation should not be neglected since it has significant effect on the macroscopic and microscopic properties of the polymer melt.