I. Steady-State FlowIn this paper

we accepted the multirod-rod molecular model and used Galerkin's method to calculate the rheological properties of dilute solutions under steady-state shear flow

uniaxial elongational flow and planar elongational flow as well as the complex flow combined shear with uniaxial elongational flow. It is showed that the model is hoped to become a more perfect molecular model describing the rheological properties of dilute solutions. The study in the paper not only enable one to carry out the numerical simulation of complex flow of viscoelastical fluid in terms of molecular models instead of the constitutive equations of continu-um mechanics

but also provides a new method for studyng the molecular model of concent-rated solution of polymer.