Effect of particle size on erosion characteristics

被引：143

作者：

Nguyen, V. B. ^{[1
]}

Nguyen, Q. B. ^{[2
]}

Zhang, Y. W. ^{[3
]}

Lim, C. Y. H. ^{[4
]}

Khoo, B. C. ^{[1
]}

机构：

[1] Natl Univ Singapore, Temasek Labs, T Lab Bldg 5A,Engn Dr 1,90-02, Singapore 11741, Singapore

[2] Singapore Inst Mfg Technol, Forming Technol Grp, 71 Nanyang Dr, Singapore 638075, Singapore

[3] Inst High Performance Comp, 1 Fusionopolis Way,16-16 Connexis, Singapore 138632, Singapore

[4] Natl Univ Singapore, Dept Mech Engn, 9 Engn Dr 1, Singapore 117576, Singapore

来源：

WEAR | 2016年 / 348卷

关键词：

Erosion; Particle size; Erosion mechanism; Erosion profiles; Erosion rate; STREAMS FOLLOWING IMPACT; PRACTICAL ESTIMATION; SQUEEZE FILM; SIMULATION; DAMAGE; FIELD; SAND;

D O I：

10.1016/j.wear.2015.12.003

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

When entrained into a carrier flow, such as liquid or gas, sand particles are able to interact with material surfaces strongly, which may cause serious erosion damage. How particle size affects the erosion characteristics, such as erosion pattern, erosion rate, erosion mechanism and erosion profile remains largely unexplored. In this study, we perform both experiments and numerical simulations to study the effects of particle size on those factors. In the experimental setup, a wet erosion test-rig is used, in which the flow speed of a mixture of sand particles and water is set to be 30 m/s and the different average sand particle sizes of 50, 80, 150, 350, 450 and 700 pm are taken. The experimental results show that there is a transition in the erosion profile from a "W" shape to a "U" shape with increasing the sand particle size. The sample surface profiles obtained from the experiments are then used to create geometry models for our numerical simulations. The simulation results are in good agreement with experimental measurements in terms of erosion rate and erosion pattern. Importantly, the simulations show that the larger sand particles able to dig deeper into the sample surface than smaller particles, providing a cogent explanation for the observed transition. The present work highlights the important role of particle size in affecting the erosion pattern, erosion rate, erosion mechanism and eroded profile. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：126 / 137

页数：12

共 32 条

[21] Experimental Study of Sand and Slurry Jets in Water [J].

Hall, Neil ;

Elenany, Mohammed ;

Zhu, David Z. ;

Rajaratnam, N. .

JOURNAL OF HYDRAULIC ENGINEERING, 2010, 136 (10) :727-738

[22] FUNDAMENTALS OF FLUID MOTION IN EROSION BY SOLID PARTICLE IMPACT [J].

HUMPHREY, JAC .

INTERNATIONAL JOURNAL OF HEAT AND FLUID FLOW, 1990, 11 (03) :170-195

[23] AERODYNAMIC EFFECTS IN THE EROSION PROCESS [J].

LAITONE, JA .

WEAR, 1979, 56 (01) :239-246

[24] STABLE AND ACCURATE CONVECTIVE MODELING PROCEDURE BASED ON QUADRATIC UPSTREAM INTERPOLATION [J].

LEONARD, BP .

COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING, 1979, 19 (01) :59-98

[25] ON THE PARTICLE-SIZE EFFECT IN SLURRY EROSION [J].

LYNN, RS ;

WONG, KK ;

CLARK, HM .

WEAR, 1991, 149 (1-2) :55-71

[26]

Menter F.R., 2003, Turbulence, Heat and Mass Transfer, V4, P625, DOI DOI 10.4028/WWW.SCIENTIFIC.NET/AMR.576.60

[27] 2-EQUATION EDDY-VISCOSITY TURBULENCE MODELS FOR ENGINEERING APPLICATIONS [J].

MENTER, FR .

AIAA JOURNAL, 1994, 32 (08) :1598-1605

[28] ON THE SIZE EFFECT IN ABRASIVE AND EROSIVE WEAR [J].

MISRA, A ;

FINNIE, I .

WEAR, 1981, 65 (03) :359-373

[29] Effect of air-borne particle-particle interaction on materials erosion [J].

Nguyen, V. B. ;

Nguyen, Q. B. ;

Lim, C. Y. H. ;

Zhang, Y. W. ;

Khoo, B. C. .

WEAR, 2015, 322 :17-31

[30] A combined numerical-experimental study on the effect of surface evolution on the water-sand multiphase flow characteristics and the material erosion behavior [J].

Nguyen, V. B. ;

Nguyen, Q. B. ;

Liu, Z. G. ;

Wan, S. ;

Lim, C. Y. H. ;

Zhang, Y. W. .

WEAR, 2014, 319 (1-2) :96-109

← 1 2 3 4 →