Particle collisions with the walls are very important in understanding the fluid-particle behavior near the walls and determining the boundary conditions of the particulate phases in two-fluid models. In this paper, we examine the velocity characteristics of several types of particles near solid walls by applying a resolved discrete particle method (RDPM), which also uses the immersed boundary approach to model the solid particles. We assume that the particles are spherical with an initial velocity that is prescribed. The particles are allowed to traverse part of the viscous fluid until they collide with the solid wall. The collision force on the particle is modeled by a soft-sphere collision scheme with a linear spring-dashpot system. The hydrodynamic force on the particle is solved directly from the RDPM. By following the trajectories of several particles, we investigate the effect of the collision model parameters to the dynamics of particle close to the wall. We report here the rebound velocity of the particle, the coefficient of restitution, and the particle slip velocity at the wall as functions of the collision parameters.
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e-mail: zhigang.feng@utsa.edu
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September 2010
Research Papers
A Three-Dimensional Resolved Discrete Particle Method for Studying Particle-Wall Collision in a Viscous Fluid
Zhi-Gang Feng,
Zhi-Gang Feng
Department of Mechanical Engineering,
e-mail: zhigang.feng@utsa.edu
University of Texas at San Antonio
, One UTSA Circle, San Antonio, TX 78249
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Efstathios E. Michaelides,
Efstathios E. Michaelides
Department of Mechanical Engineering,
University of Texas at San Antonio
, One UTSA Circle, San Antonio, TX 78249
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Shaolin Mao
Shaolin Mao
T-5, Theoretical Division,
Los Alamos National Laboratory
, Mail Stop B284, Los Alamos, NM 87545
Search for other works by this author on:
Zhi-Gang Feng
Department of Mechanical Engineering,
University of Texas at San Antonio
, One UTSA Circle, San Antonio, TX 78249e-mail: zhigang.feng@utsa.edu
Efstathios E. Michaelides
Department of Mechanical Engineering,
University of Texas at San Antonio
, One UTSA Circle, San Antonio, TX 78249
Shaolin Mao
T-5, Theoretical Division,
Los Alamos National Laboratory
, Mail Stop B284, Los Alamos, NM 87545J. Fluids Eng. Sep 2010, 132(9): 091302 (7 pages)
Published Online: September 23, 2010
Article history
Received:
October 30, 2009
Revised:
August 23, 2010
Online:
September 23, 2010
Published:
September 23, 2010
Citation
Feng, Z., Michaelides, E. E., and Mao, S. (September 23, 2010). "A Three-Dimensional Resolved Discrete Particle Method for Studying Particle-Wall Collision in a Viscous Fluid." ASME. J. Fluids Eng. September 2010; 132(9): 091302. https://doi.org/10.1115/1.4002432
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