FLOW BEHAVIOR OF VISCOELASTIC POLYMER SOLUTION IN THE EXPANSION CHANNEL
黏弹性聚合物溶液在突扩孔道内的流动特性

The upper-convected Maxwell(UCM)model was used to describe the rheological properties of polymers.A finite volume method(FVM)for the numerical solution of viscoelastic flows through an abrupt expansion channel is presented.Although there have been many successful numerical predictions of elastic fluid flows,the Weissenberg number(We)which stands for the elastic is low.With the FVM,stable solutions are found for high Weissenberg number(the elasticity levels up to We=3.2),further extending the range of previo...