CFD Evaluation of Solid Particles Erosion in Curved Ducts

Abstract

This paper investigates numerically the erosion phenomenon that occurs in 90 deg and 180 deg curved ducts. The erosion prediction model comprises from three stages: flow modeling, particle tracking, and erosion calculations. The proposed three stages of the present model are tested and validated. Comparisons between predicted penetration rate and published experimental data show a good agreement. The effects of bend orientation, inlet gas velocity, bend dimensions, loading ratio, and particle size on the penetration rate are also simulated. In addition, based on many predictions of erosion rate results, new CFD based correlations are developed for the maximum penetration rate and its location. These correlations can be used to predict the bend lifetime for particular operating conditions.

Metal Erosion due to Particles at High Velocity and Temperature

“…It was suggested that the erosion is mostly dependent on the ratio of curvature and initial velocity [3,4]. Other studies also considered angle of impacting particles on the erosion rate [5]. In our case the angle is 0 0 as the flow is along the surface of material.…”

Hydrodynamic and thermal fields analysis in gas–solid two-phase flow

“…The grid is selected based on grid independence study for each case and the dimensionless wall distance, y+ is less than unity in all the tested cases. The FORTRAN code used in the present study was originally developed by ElBehery et al (2009) to simulate gas-solid flow in curved ducts and to predict the erosion rate in such geometries (El-Behery et al, 2010). In the present study the code is further modified by including the particle-particle collision, wall roughness, particleturbulence interaction and heat transfer.…”

Particle abrasion of lifting elbow in dilute pneumatic conveying

“…where b, c, d 1 , d 2 , d 3 , and d 4 are empirical constants for the E/CRC model, which are listed in Table 1. 19,20 The Hertz-Mindlin with Archard wear model estimates the depth of erosion on a wall surface, and it primarily addresses the effects of abrasive erosion and low-angle impact on a wall due to tangential collisions between solids and the wall. 21 The Archard equation is expressed as…”