Table of Contents
ISRN Chemical Engineering
Volume 2013, Article ID 105912, 10 pages
http://dx.doi.org/10.1155/2013/105912
Research Article

CFD Modeling of Particulates Erosive Effect on a Commercial Scale Pipeline Bend

Process Development Department, Research Institute of Petroleum Industry, Tehran 1485733111, Iran

Received 25 June 2013; Accepted 27 August 2013

Academic Editors: A. Brucato and A. B. Yu

Copyright © 2013 Vahid Abdolkarimi and Rasool Mohammadikhah. 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

The computational fluid dynamics modeling of solid particles hydrodynamic based on the Lagrangian framework for diluted solid-gas flow through 90° gas pipeline bend is carried out to discover the effect of particles size distribution on particles flow pattern and their erosive effect on the bend. Particles size distribution has been obtained experimentally by measuring the sizes of solid particles that are flowing through the gas pipelines of Aghajari gas booster station. Also the erosion rate at the outer wall of the bend is predicted. The pipeline bend under study has a pipe diameter of 56 inches and ratios of the bend radius of the curvature to the pipeline diameter of 1.5. For the validation of computational model, firstly, the computational modeling is performed for a published experimental solid-gas flow data. The computational results include radial gas velocity and radial particle velocity profiles on planes which are at different angles through the bend. The comparison between the predicted numerical results and similar experimental data proves that the predictions of the computational model are acceptable. Finally, the particles' size distributions on each plane through the bend and the erosion rate on the outer wall of the bend have been obtained. The maximum rate of erosion is found to be 3.2 nm/s, occurring between 40 and 65° of the bend.