Study on the erosion wear in pipe fittings

  • manlai zhang Yangtzeu University


In the pipeline system for liquid carrying particle, local erosion wear broken has become the main damage mechanism of pipe in the fracturing operations of oil-gas engineering as a large number of particles continually impact on the inner surface of pipes. Computational Fluid Dynamics simulation was performed to determine the evolutionary process of erosion wear in tubing connector, which was the weakness of pipeline system, and a new way to predict the pipeline safety was provided. Based on the Euler method, the volume fraction of the particulate phase and interphase momentum exchange were included in the liquid flow equations due to the influence of dense particle on fluid flow, and the particle trajectory were calculated in the Lagrange frame by analyzing the forces from the interaction of liquid and particle and particles collision. With the erosion damage model, the erosion rate/depth in the connector was calculated to reconstruct the mesh model of shoulder with 5 tori. Torus 1 is closest to axis while torus 5 is on the outmost wall of the connector. During the erosion event, greatest erosion and hence surface deformation occurs on tori 1 and 2, and this affects the surrounding flow and particle movement. After 10 h, there was a dramatic drop in the maximum erosion rate, which illustrated a conservative prediction for pipeline service life if the initial erosion rate was used. A physical erosion experiment was also performed to identify the weight loss and erosion characteristic of the inner surface with erosion time of 55 h. It was observed that the erosion simulations provided relative errors within 18% for erosion length and weight loss compared to the experimental values and a valid simulation method for the erosion evolution was proposed to predict the erosion life of tubing connector.


Finnie. 1960. Erosion of Surfaces by Solid Particles. J. Wear, 3, 87-103.

G.P. Tilly. 1979. Erosion by impact of solid particles. Treatise on Material Science and Technology, Academic Press. New York.

A. Huser and O. Kvernvold. 1998. Prediction of Sand Erosion in Process and Pipe components. 1st North American Conference on Multiphase Technology. Canada, 217-227.

A. Keating and S. NESIC. 1999. Prediction of Two-phase Erosion-corrosion in Bends. Second International Conference on CFD in the Minerals and Process Industries.

Chen, X., McLaury, B.S. Shirazi, S.A. 2002. Effects of Applying a Stochastic Rebound Model in Erosion Prediction of Elbows and Plugged Tee. ASME Fluids Engineering Division Meeting. Montreal, Canada.

S. A. Shirazi and B. S. McLaury. 2000. Erosion Modeling of Elbows in Multiphase Flow. Proceedings of 2000 ASME Fluids Engineering.

Joseph I. Achebo, 2009. Computational Analysis of Erosion Wear Rate in a Pipeline Using the Drift Flux Models based on Eulerian Continuum Equations. Proceedings of the World Congress on Engineering WCE 2009. London.

Y.Wong, ChristopherSolnordal, AnthonySwallow, JieWu. 2013. Experimental and computational modeling of solid particle erosion in a pipe annular cavity. Wear, 109-129.

C. Davis, P. Frawley. 2009. Modelling of erosion–corrosion in practical geometries, Corrosion Science 51, 769–775 April

H.M. Badr, Habib, Rached Ben-Mansour. 2005. Numerical investigation of erosion threshold velocity in a pipe with sudden contraction, Computer sand Fluids 34, 721–742.

Manlai Zhang, M., Liao R., Feng J. 2011. Prediction of Particle Erosion in Bend Based on Liquid-solid Coupling Simulation, ICPTT 2011: Sustainable Solutions for Water, Sewer, Gas, and Oil Pipelines - Proceedings of the International Conference on Pipelines and Trenchless Technology, 542-551.

A. Haider and O. Levenspiel. 1989. Drag Coefficient and Terminal Velocity of Spherical and Nonspherical Particles. Powder Technology. 58. 63-70.

P. A. Cundall and O. D. L. Strack. 1979. A Discrete Numerical Model for Granular Assemblies. Geotechnique. 29. 47-65.

J. G. A. Bitter. 1963. A Study of Erosion Phenomena Parts 1 and 2. J. Wear, 6, 5-21 & 169-190.

K. Haugen, O. Kvernvold, A. Ronold and R. Sandberg. 1995. Sand erosion of wear resistant materials: Erosion in choke valves. J. Wear, 186-187.

Mechanical Engineering