Simulation of Non-Newtonian Fluids using Modelica

Abstract

Many fluids used today in different applications show a non-Newtonian behavior. In order to simulate this behavior, many different approaches exist but are not fully implemented in a simulation program. One of the problems with these kinds of simulations is the lack of compatibility with existing models. This makes the modeling very time consuming. In this paper, a simple approach is shown that pro-vides a general set of equations which can then be used to model both Newtonian as well as non-Newtonian behavior of fluids in the same model in Modelica. Since the implementation is in base mod-els, existing components can easily be used to simu-late non Newtonian fluids without sacrificing simula-tion times.