A numerical method for the calculation of drag and lift of a deformable droplet in shear flow

Youngho Suh, Chang Hoon Lee

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

We present a new numerical method for the calculation of drag and lift acting on a deformable droplet in linear shear flow. The droplet interface is captured by the level-set (LS) method. In order to determine the acting force on a droplet in shear flow field, we adopt the feedback forces which can maintain the particle position while efficiently handling deformation. The stability analysis of the feedback forcing function is performed to provide the precise stability boundaries in the forcing parameter space for the time-advancing scheme used in our study. The present method is applied to simulations of spherical, deformed, and oscillating droplets in uniform flow for validations. The present method is further applied to an investigation of the effects of deformation of a droplet in shear flow. We observed that drag and lift forces acting on a droplet depend strongly on the deformation characteristics.

Original languageEnglish
Pages (from-to)35-57
Number of pages23
JournalJournal of Computational Physics
Volume241
DOIs
Publication statusPublished - 2013 May 5

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Shear flow
shear flow
drag
Drag
Numerical methods
uniform flow
flow distribution
Feedback
Flow fields
simulation

All Science Journal Classification (ASJC) codes

  • Numerical Analysis
  • Modelling and Simulation
  • Physics and Astronomy (miscellaneous)
  • Physics and Astronomy(all)
  • Computer Science Applications
  • Computational Mathematics
  • Applied Mathematics

Cite this

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abstract = "We present a new numerical method for the calculation of drag and lift acting on a deformable droplet in linear shear flow. The droplet interface is captured by the level-set (LS) method. In order to determine the acting force on a droplet in shear flow field, we adopt the feedback forces which can maintain the particle position while efficiently handling deformation. The stability analysis of the feedback forcing function is performed to provide the precise stability boundaries in the forcing parameter space for the time-advancing scheme used in our study. The present method is applied to simulations of spherical, deformed, and oscillating droplets in uniform flow for validations. The present method is further applied to an investigation of the effects of deformation of a droplet in shear flow. We observed that drag and lift forces acting on a droplet depend strongly on the deformation characteristics.",
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A numerical method for the calculation of drag and lift of a deformable droplet in shear flow. / Suh, Youngho; Lee, Chang Hoon.

In: Journal of Computational Physics, Vol. 241, 05.05.2013, p. 35-57.

Research output: Contribution to journalArticle

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AB - We present a new numerical method for the calculation of drag and lift acting on a deformable droplet in linear shear flow. The droplet interface is captured by the level-set (LS) method. In order to determine the acting force on a droplet in shear flow field, we adopt the feedback forces which can maintain the particle position while efficiently handling deformation. The stability analysis of the feedback forcing function is performed to provide the precise stability boundaries in the forcing parameter space for the time-advancing scheme used in our study. The present method is applied to simulations of spherical, deformed, and oscillating droplets in uniform flow for validations. The present method is further applied to an investigation of the effects of deformation of a droplet in shear flow. We observed that drag and lift forces acting on a droplet depend strongly on the deformation characteristics.

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