Gas-Assisted Displacement of Viscoelastic Fluids in Simple Geometries

9410196 Koelling本研究的目的是对一种新开发的被称为气体辅助注射成型的注射成型工艺有一个基本的了解。原型问题包括一个长气泡通过充满粘弹性液体的管道的运动。由于工业过程中使用的许多流体都是粘弹性的，因此主要的重点将放在流变学对气泡渗透和气泡前缘附近流体运动的影响上。这项工作在本质上是实验性的，使用了先进的流体力学和流变学技术。视频成像系统将用于提供有关整个流场的信息，并测量沉积在管壁中的液体的比例。* * *

9410196 Koelling The objective of this research is to develop a fundamental understanding of a newly developed injection molding process known as gas-assisted injection molding. The prototype problem consists of the motion of a long gas bubble through a tube filled with a viscoelastic liquid. Since many fluids used in industrial processes are viscoelastic, the principal focus will be on the effect of rheology on the bubble penetration and fluid motion near the bubble front. This work is experimental in nature and uses advanced fluid mechanical and rheological techniques. A video imaging system will be used to provide information about the entire flow field and the fraction of liquid deposited in the tube wall will be measured. ***