Time-Dependent Motion of Multimode Fluids

多模流体的瞬态运动

• 批准号: 8921668
• 负责人: Bruce Caswell
• 金额: $ 32.15万
• 依托单位: Brown University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1990
• 资助国家: 美国
• 起止时间: 1990-07-01 至 1994-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8921668&HistoricalAwards=false
• 关键词: Time; Dependent; Motion; Multimode; Fluids

Numerical and analytical methods will be applied to the problem of time dependent flows of viscoelastic fluids. The formulation will include allowance for multiple internal relaxation times of the fluid. The method will accommodate memory-type fluids with free surfaces. Numerical simulations of polymer processing will be carried out with a previously developed Eulerian-Lagrangian system. The simulations are aimed at mold filling, an inherently unsteady process of considerable importance in the polymer processing industry.

数值和解析方法将应用于粘弹性流体随时间流动的问题。该公式将考虑流体的多个内部松弛时间。该方法将适应具有自由表面的记忆型流体。聚合物加工的数值模拟将使用先前开发的欧拉-拉格朗日系统进行。模拟的目标是模具填充，这是一个固有的不稳定过程，在聚合物加工工业中相当重要。