CFD Model for Lift Force in a Wall-Bounded Flow

The modeling of the lift force in high shear rate pipe flow is an essential issue for the estimation of the droplet dispersion. The analytical models used in most CFD softwares, such as the popular models of Auton or Saffman, overestimate the intensity of the lift force for inertial particles at hig...

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Bibliographic Details
Published in:The journal of computational multiphase flows (Online) 2013-12, Vol.5 (4), p.251-263
Main Authors: Baalbaki, D., Toutant, A., Ruyer, P., Bataille, F.
Format: Article
Language:English
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Summary:The modeling of the lift force in high shear rate pipe flow is an essential issue for the estimation of the droplet dispersion. The analytical models used in most CFD softwares, such as the popular models of Auton or Saffman, overestimate the intensity of the lift force for inertial particles at high particle Reynolds number. In this paper, after a review of DNS calculations, we present an overall solution for the lift force acting on a droplet in a shear flow, for moderate and high particle Reynolds number in the near-wall zone and for unbounded shear flow. Finally, some numerical results in a cylindrical pipe are presented.
ISSN:1757-482X
1757-4838
DOI:10.1260/1757-482X.5.4.251