Erosion-corrosion in turbulent, disturbed, two-phase liquid/particle flow is studied by the application of a numerical flow model accompanierd by a mass-transfer controlled corrosion model and two erosion models. The flow model which is based on a two-phase flow version of a standard k — ϵ model of turbulence and a stochastic simulation of particle-fluid turbulence interactions, is capable of successfully predicting local values of time averaged fluid velocities and turbulence intensities, as well as predicting particle dispersion, and particle-wall interaction. The corrosion model is based on the model of mass transfer in disturbed flow conditions. The erosion models used are that of Finnie and a modified version suggested by Bergevin.

Results of an erosion simulation for a 2% water/sand slurry flow through a sudden pipe expansion were compared with the stainless steel erosion measurements. The erosion-corrosion model was used to predict the overall pattern and rates of metal loss at a sudden expansion and a groove in pipe carrying a water/sand slurry.

Subject
Erosion models, Piping, Slurry, Grooves, Corrosion rate, Predicted corrosion rate, Turbulent flow, Walls, Metal loss, Mass transfer, Corrosion modeling, Erosion, Erosion corrosion
© 1991 Association for Materials Protection and Performance (AMPP). All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means (electronic, mechanical, photocopying, recording, or otherwise) without the prior written permission of AMPP. Positions and opinions advanced in this work are those of the author(s) and not necessarily those of AMPP. Responsibility for the content of the work lies solely with the author(s).
1991
Association for Materials Protection and Performance (AMPP)
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