Abstract
Understanding wall-thinning erosion of pipelines in nuclear or steam power plants is critically important for predicting and preventing human and material accidents. Wall thinning of pipelines in power plants occurs mainly by flow acceleration corrosion (FAC), cavitation erosion (C/E), and liquid droplet impingement erosion (LIE). Wall thinning by FAC and C/E has been well-investigated; however, LIE in plant industries has rarely been studied due to the experimental difficulty of setting up a long injection of highly pressurized air. We designed a long-term experimental system for LIE and investigated the behavior of LIE for three kinds of materials (A106B, SS400, A6061). The main control parameter was the air-water ratio (α), which was defined as the volumetric ratio of water to air (0.79, 1.00, 1.72). To clearly understand LIE, the spraying velocity (v) of liquid droplets was controlled larger than 160 m/s and the experiments were performed for 15 days. The surface morphology and hardness of the materials were examined every five days. Since the spraying velocity of liquid droplets and their contact area (Ac) on specimens were changed according to the air-water ratio, we analyzed the behavior of LIE for the materials using the impulse (I), which was defined as I = (α × v) / Ac. Finally, the prediction equations (the erosion rate) for the LIE of the materials were determined for the air-water ratios.
Article PDF
Similar content being viewed by others
Avoid common mistakes on your manuscript.
References
NRC, Thinning of pipe walls in nuclear power plant, Bulletin 87-01 (1987).
D. H. Lister and L. C. Lang, A mechanistic model for predicting flow-assisted and general corrosion of carbon steel in reactor primary coolants, International Conference on Water Chemistry in Nuclear Reactor Systems, Avignon (2002).
P. Alto, Recommendations for controlling cavitation, flashing, liquid droplet impingement and solid particle erosion in nuclear power plant piping systems, EPRI, 1011231 (2005).
KEPCO, Monitoring corrosion in nuclear piping system, Topical Report TR.96NW01.J1999.346 (1998).
Y. Kim, J. Yoo and M. Lee, Optimal design of spaced plates under hypervelocity impact, JMST, 26 (5) (2012) 1567–1575.
V. K. Chexal and J. S. Horowitz, Flow-assisted corrosion in carbon steel piping parameters and influences, EPR, 1 (1989).
NRC, Rupture in extraction steam piping as a result of flowaccelerated corrosion (1997) Notice 97-84.
S. Chun and H.-S. Kwon, Use of Wigner-Ville transformations for fluid particles in laser Doppler flow accelerometry, JMST, 26 (3) (2012) 857–867.
J. Ducreaux, Corrosion-erosion of steels in high temperature water and wet steam, Paper No. 14, Electricite de France, Les Renardieres France (1982).
P. Berge et al., Water chemistry of nuclear reactor systems 2, London, British Nuclear Energy Society (1981) 124.
J. Ducreaux, Water chemistry of nuclear reactor system 3, Vol. 1, London, British Nuclear Energy Society (1983) 227.
H. Sun, Numerical study of hydrofoil geometry effect on cavitating flow, JMST, 26 (8) (2012) 2535–2545.
W. Kastner, K. Riedle and H. Trats, Experimental inspections on material loss due to Erosion-Corrosion, VGB Kraftweeks Technik, 64 (5) (1984) 411–243.
Y. Y. Liu and Natesan, Oxidation-erosion of metals and alloys: Models, verification and prediction, Surface and Coatings Technology, 36 (1988) 407–417.
L. Pawlowsk, The science and engineering of thermal spray coatings, Wiley, New York (1995).
M. C. Rochester and J. H. Brunton, Influence of physical properties of the liquid on the erosion of solids, ASTM STP, 567 (1974) 128–151.
S. Park and G. Jeun, Calculation of water droplet impingement using the coupled method of rigid body dynamics and the moving particle semi-implicit method, JMST, 25 (11) (2011) 2787–2794.
H. Keller, Corrosion and erosion problems in saturatedsteam turbines, AIM Conf., Liege, Belgium (1978) 22–28.
P. Berge, J. Ducreux and P. Saint, Effects of chemistry on corrosion-erosion of steels in water and wet steam, Water Chemistry 2, BNES, 2 (1980) 19–23.
S. M. Wiederhorn and B. R. Lawn, Strength degradation of glass impacted with shape particles, J. Am. Ceram. Soc., 62 (1–2) (1979) 66–70.
D. Choudhury, Introduction to the renormalization group method and turbulence modeling, Fluent Inc., Technical Memorandum TM-107 (1993).
B. J. Yun, Development of an average bi-directional flow tube for the measurement of single and two phase flow rate, KFMA (2004) 172–179.
M. G. Fontana, Corrosion engineering, 3rd ed., McGraw Hill (2008) 25, 70–71, 95–97, 485–487.
Author information
Authors and Affiliations
Corresponding author
Additional information
Recommended by Associate Editor Simon Song
Kyung Hoon Kim serves as a professor in Kyung Hee University. Professor Kim’s research interests include turbulence, pipe flow & flow visualization.
Rights and permissions
About this article
Cite this article
Choi, D.H., Kim, K.H. & Kim, H.J. Long-term investigation of erosion behaviors on metal surfaces by impingement of liquid droplet with high-speed. J Mech Sci Technol 29, 1085–1091 (2015). https://doi.org/10.1007/s12206-015-0220-0
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s12206-015-0220-0