Modeling of flow of particles in a non-Newtonian fluid using lattice Boltzmann method

Jan Skocek, Oldrich Svec, Jon Spangenberg, Henrik Stang, Mette Rica Geiker, N. Roussel, Jesper Henri Hattel

    Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review


    To predict correctly the castings process of self compacting concrete a numerical model capable of simulating flow patterns at the structural scale and at the same time the impact of the varying volume fraction of aggregates and other phenomena at the scale of aggregates on the flow evolution is necessary. In this contribution, the model at the scale of aggregates is introduced. The conventional lattice Boltzmann method for fluid flow is enriched with the immersed boundary method with direct forcing to simulate the flow of rigid particles in a non- Newtonian liquid. Basic ingredients of the model are presented and discussed with the emphasis on a newly developed algorithm for the dynamics of particles whose interactions strongly depend on velocities of particles. The application of the model is demonstrated by a parametric study with varying volume fractions of aggregates and speed of shearing used for computation of effective viscosities. It is shown that the presented model based on well established methods and without any artificial parameters, numerical tricks or modifications provides an efficient tool that can be applied to a range of engineering problems on different length-scales yielding results matching favorably theoretical or experimental findings.
    Original languageEnglish
    Title of host publicationProceedings of the 8th International Congress on the Chemistry of Cement
    Publication date2011
    Publication statusPublished - 2011
    Event8th International Congress on the Chemistry of Cement - Madrid, Spain
    Duration: 3 Jul 20118 Jul 2011
    Conference number: 8


    Conference8th International Congress on the Chemistry of Cement


    • Suspension
    • Flow modeling
    • Non-Newtonian fluid
    • Self compacting Concrete
    • Lattice Boltzmann Method (LBM)


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