About this Journal Submit a Manuscript Table of Contents
Abstract and Applied Analysis
Volume 2013 (2013), Article ID 245074, 8 pages
http://dx.doi.org/10.1155/2013/245074
Research Article

Modeling and Numerical Analysis of the Solid Particle Erosion in Curved Ducts

Ke Sun,1,2 Lin Lu,1 and Hanhui Jin2

1Faculty of Construction and Environment, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong
2School of Aeronautics and Astronautics, Zhejiang University, Hangzhou 310027, China

Received 9 September 2013; Accepted 18 October 2013

Academic Editor: Jianzhong Lin

Copyright © 2013 Ke Sun et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

This paper presents a modeling and computational study on particle erosion in curved ducts. It is found that the average erosion rates per impact range from to  mm3/g under current conditions. For each doubled inlet velocity, the increases of erosion rates per impact are 2–14 times. The erosion rate per impact varies with particle diameter with “” shape through bends, which is similar to the particle deposition behavior in duct flows. The erosion rate curves per injected particle show the shapes of a 90-degree anticlockwise rotated “S” and a wide open “V,” respectively, for three larger and smaller inlet velocities. The average erosion rates per injected particle are 1.4–18.9 times those rates per impact due to huge amounts of impacting, especially for those depositing particles. It is obvious that the erosion rate distribution per impact is similar to a “fingerprint” with five clear stripes and a lower “cloud” along the bend deflection angle for the three largest particles; yet, for other smaller particles, the erosion rate distributions are much like an entire “cloud.”