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Khalili Garakani, A., Mostoufi, N., Sadeghi, F., Hosseinzadeh, M., Fatourechi, H., Sarrafzadeh, M. and Mehrnia, M.R. (2011) Comparison between Different Models for Rheological Characterization of Activated Sludge. Journal of Environmental Health Science and Engineering, 8, 255-264.

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• TITLE: Implementation of Non-Newtonian Fluid Properties for Compressible Multiphase Flows in OpenFOAM

  AUTHORS: Stefan Westermaier, Wojciech Kowalczyk

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

  JOURNAL NAME: Open Journal of Fluid Dynamics, Vol.10 No.2, June 19, 2020

  ABSTRACT: 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.