Affiliation:
1. Department of Mechanical Engineering, 206 W. 18th Avenue, Ohio State University, Columbus, OH 43210
Abstract
In the present study, particle growth on individual fibers within a fibrous medium is examined as flow conditions transition beyond the Stokes flow regime. Employing a numerical model that solves the viscous, incompressible Navier-Stokes equations, the Stokes flow approximation used in past research to describe the velocity field through the fibrous medium is eliminated. Fibers are modeled in a staggered array to eliminate assumptions regarding the effects of neighboring fibers. Results from the numerical model are compared to the limiting theoretical results obtained for individual cylinders and arrays of cylinders. Particle growth is presented as a function of time, angular position around the fiber, and flow Reynolds number. From the range of conditions examined, particles agglomerate into taller and narrower dendrites as Reynolds number is increased, which increases the probability that they will break off as larger agglomerations and, subsequently, substantially reduce the hydraulic conductivity of the porous medium.
Reference19 articles.
1. C. A. J. Fletcher 1980, Computational Techniques for Fluid Dynamics, Vol. II.
2. Fornberg, B., 1987, “A Numerical Study of Steady Viscous Flow Past a Circular Cylinder,” Vol. 5, pp. 339–353.
3. Goren
S. L.
, 1973, Journal of Colloidial Interface Science, Vol. 44, p. 365365.
4. Henry
F. S.
, and ArimanT., 1983, “An Evaluation of the Kuwabara Model,” Particulate Science and Technology, Vol. 1, pp. 1–20.
5. Henry
F.
, and ArimanT., 1987, “A Staggered Array Model of A Fibrous Filter with Electrical Enhancement,” Particulate Science & Technology, Vol. 1, pp. 139–154.
Cited by
4 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献