SIMULATION OF AXISYMMETRIC CONTRACTION FLOW FOR POLYMER MELT BY USING PSM MODEL

Based on the numerical method of die swell forviscoelastic fluid, proposed by the authors, simulations of 4:1axisymmetric contraction flow for IUPAC-LDPE melt are presented in thispaper. The relative vortex intensity and the entrance correction obtainedhere agree with the results reported in the literatures, and theflow fields are also reasonable. The results in thepaper indicate that the method used by the authors is suitable forcalculating the entry flow in contraction for viscoelastic polymer meltdescribed by the integral-type PSM constitutive equation.