Data from: Relationship between wear formation and large-particle motion in a pipe bend

Fine and large particles flowing through a bend in a pipe move differently
and therefore erode the pipe differently. The present paper simulates
solid–liquid two-phase flow containing large particles in a bend and
analyzes the relationship between the wear formation and particle motion.
Wear experiments are carried out using 3-mm glass bead particles at a mass
concentration of 1%–15%. At the same time, the flow field and the motion
of the granular system are obtained in computational fluid
dynamics–discrete element method simulation. The wear formation mechanism
is revealed by comparing experiments with numerical simulations. The wear
rate of the wall surface increases with the mass concentration, while the
marginal growth rate decreases as the mass concentration increases. As the
mass concentration increases to a certain value, the degree of wear
reaches a maximum and remains unchanged subsequently because of the
formation of a particle barrier along the bend wall. The particles near
the wall region will bouncing forward because of the periodic disturbance
flow around particles. The impacting of mass bouncing particles makes the
formation of the erosion ripple on the test sheet.