On constitutive models for the momentum transfer to particles in fluid-dominated two-phase flows

Cui, Y., Ravnik, J., Hriberšek, M. and Steinmann, P. (2018) On constitutive models for the momentum transfer to particles in fluid-dominated two-phase flows. In: Altenbach, H., Jablonski, F., Muller, W.H., Naumenko, K. and Schneider, P. (eds.) Advances in Mechanics of Materials and Structural Analysis. Series: Advanced structured materials (80). Springer: Cham. ISBN 9783319705637 (doi: 10.1007/978-3-319-70563-7_1)

Abstract

This contribution deals with fluid flow-particle interactions in fluid dominated two phase flows. Spherical as well as non-spherical particles in the form of are considered. In the case of ellipsoids, the hydrodynamic drag force model based on the Brenner-type resistance tensor is applied. As high shear flow regions are frequently encountered in complex flow patterns, special attention is devoted to the extension of established shear lift models, that are only valid for special cases of shear flows, to a general shear lift model based on permutations of the lift tensor, originally derived by Harper and Chang. A generalized lift vector, valid for ellipsoidal particles, is derived and implemented for the computation of the lift force in general shear flows. The derived generalized shear lift force model is validated against other numerical models for ellipsoids in Couette flow, and its influence on the translational motion of ellipsoidal particles in a three-dimensional lid-driven cavity flow is studied. The computational results confirm the correctness of the proposed generalized shear lift model.

• Item Type: Book Sections
• Additional Information: Print ISBN: 9783319705620.
• Status: Published
• Glasgow Author(s) Enlighten ID: Steinmann, Professor Paul
• Authors: Cui, Y., Ravnik, J., Hriberšek, M., and Steinmann, P.
• College/School: College of Science and Engineering > School of Engineering > Infrastructure and Environment
• Journal Name: Advanced Structured Materials
• Publisher: Springer
• ISBN: 9783319705637