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A Full Eulerian Finite Difference Method for Hyperelasic Particles in Fluid Flows

[+] Author Affiliations
Kazuyasu Sugiyama, Satoshi Ii, Yoichiro Matsumoto

The University of Tokyo, Tokyo, Japan

Shintaro Takeuchi

Osaka University, Suita, Osaka, Japan

Shu Takagi

The University of Tokyo, Tokyo; RIKEN, Wako, Saitama, Japan

Paper No. AJK2011-04001, pp. 1561-1567; 7 pages
doi:10.1115/AJK2011-04001
From:
  • ASME-JSME-KSME 2011 Joint Fluids Engineering Conference
  • ASME-JSME-KSME 2011 Joint Fluids Engineering Conference: Volume 1, Symposia – Parts A, B, C, and D
  • Hamamatsu, Japan, July 24–29, 2011
  • Conference Sponsors: Fluids Engineering Division
  • ISBN: 978-0-7918-4440-3
  • Copyright © 2011 by JSME

abstract

A full Eulerian finite difference method has been developed for solving a dynamic interaction problem between Newtonian fluid and hyperelastic material. It facilitates to simulate certain classes of problems, such that an initial and neutral configuration of a multi-component geometry converted from voxel-based data is provided on a fixed Cartesian mesh. A solid volume fraction, which has been widely used for multiphase flow simulations, is applied to describing the multi-component geometry. The temporal change in the solid deformation is described in the Eulerian frame by updating a left Cauchy-Green deformation tensor, which is used to express constitutive equations for incompressible hyperelastic materials. The present Eulerian approach is confirmed to well reproduce the material deformation in the lid-driven flow and the particle-particle interaction in the Couette flow computed by means of the finite element method. It is applied to a Poiseuille flow containing biconcave neo-Hookean particles. The deformation, the relative position and orientation of a pair of particles are strongly dependent upon the initial configuration. The increase in the apparent viscosity is dependent upon the developed arrangement of the particles.

Copyright © 2011 by JSME

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