A novel model for the lift force acting on a prolate spheroidal particle in an arbitrary non-uniform flow. Part I. Lift force due to the streamwise flow shear

Cui Y, Ravnik J, Hribersek M, Steinmann P (2018)

Publication Status: Published

Publication Type: Journal article, Original article

Publication year: 2018

Journal

International Journal of Multiphase Flow Elsevier

Publisher: PERGAMON-ELSEVIER SCIENCE LTD

Book Volume: 104

Pages Range: 103-112

DOI: 10.1016/j.ijmultiphaseflow.2018.03.007

Abstract

The paper proposes a generic method to extend lift force models that were originally devised for single linear shear flow, to arbitrary flow conditions. The method computes the lift force due to the dominant streamwise flow shear in the Stokes flow regime by implementing a series of coordinate transformations, facilitating the computation of the lift force from dominant streamwise flow shear. The derived numerical algorithm is applied to the computation of a dedicated shear lift force model for prolate spheroidal particles (or axisymmetric ellipsoidal particles) and a novel generalised Saffman-type lift force model for spherical particles in a general shear flow. In order to verify the proposed shear lift force for prolate spheroidal particles, numerical simulations of a particle moving in Poiseuille flow at four different initial positions and two aspect ratios are perfomed. The new generalised Saffman-type lift model is compared with an established generalised Saffman-type lift model by simulating the axial migration of a spherical particle in Poiseuille flow. The computational results confirm the correctness of the proposed shear lift force models. (C) 2018 Elsevier Ltd. All rights reserved.

Authors with CRIS profile

Yan Cui Lehrstuhl für Technische Mechanik Paul Steinmann Lehrstuhl für Technische Mechanik

Related research project(s)

A numerical model of translational and rotational momentum transfer of small on-spherical rigid particles in fluid dominated two-phase flows Dec. 1, 2014 - Jan. 31, 2020

Involved external institutions

University of Maribor (UM) / Univerza v Mariboru SI Slovenia (SI)

How to cite

APA:

Cui, Y., Ravnik, J., Hribersek, M., & Steinmann, P. (2018). A novel model for the lift force acting on a prolate spheroidal particle in an arbitrary non-uniform flow. Part I. Lift force due to the streamwise flow shear. International Journal of Multiphase Flow, 104, 103-112. https://dx.doi.org/10.1016/j.ijmultiphaseflow.2018.03.007

MLA:

Cui, Yan, et al. "A novel model for the lift force acting on a prolate spheroidal particle in an arbitrary non-uniform flow. Part I. Lift force due to the streamwise flow shear." International Journal of Multiphase Flow 104 (2018): 103-112.

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