Numerical simulation of non-isothermal viscoelastic flows at high Weissenberg numbers using a finite volume method on general unstructured meshes

In this numerical study, an original approach to simulate non-isothermal viscoelastic fluid flows at high Weissenberg numbers is presented. Stable computations over a wide range of are assured by using the root conformation in finite volume framework on general unstructured meshes. The stabilization extended consider thermo-rheological properties Oldroyd-B type fluids. temperature dependence modeled with time–temperature superposition principle. Both Arrhenius and WLF shift factors can be chosen, depending flow characteristics. internal energy balance takes into account both entropy elasticity. Partitioning achieved constant split factor. An analytical solution equations planar channel derived verify results main field variables estimate error. more complex entry polyisobutylene-based polymer axisymmetric 4:1 contraction studied compared experimental data from literature. We demonstrate stability method experimentally relevant numbers. different imposed wall temperatures, as well numbers, found good agreement data.