Author(s)

Stefan Westermaier, Wojciech Kowalczyk

Chair of Mechanics and Robotics, University of Duisburg-Essen, Essen, Germany.

The paper presents the implementation of non-Newtonian fluid properties for compressible multiphase solver in the open source framework OpenFOAM. The transport models for Power Law, Cross Power Law, Casson, Bird-Carreau and Herschel-Bulkley fluids were included in the thermophysical model library. Appropriate non-Newtonian liquids have been chosen from literature, and pressure driven test simulations are carried out. Therefore, the solver compressibleInterFoam is used to compute air-liquid mixture flows over a backward facing step. A validation of the novel models has been performed by means of a sample-based comparison of the strain rate viscosity relation. The theoretical rheological properties of the selected liquids agree well with the results of the simulated data.

OpenFOAM, Non-Newtonian Fluid, Multiphase Flow, Compressible Flow

Westermaier, S. and Kowalczyk, W. (2020) Implementation of Non-Newtonian Fluid Properties for Compressible Multiphase Flows in OpenFOAM. Open Journal of Fluid Dynamics, 10, 135-150. doi: 10.4236/ojfd.2020.102009.