Based on engineering fluid mechanics and the mechanical model of particle transportation, discrete particle model and ductile impact erosion model were applied for investigating pipe impact erosion influenced by slurry characteristics in complex backfilling pipeline in a mine, aiming to study the impact erosion mechanism of backfilling pipe during transportation. The results show that pipe impact erosion was largely influenced by slurry velocity, viscosity and particle size, while slightly influenced by particle shape. At high flow velocity, compared with straight pipe, in which the erosion zone is distributed relatively uniformly in the pipe wall, the bended pipe had the most serious impact erosion zone with the maximum erosion value in the range of 15°-30°and 60°- 75° at low flow velocity, the main impact erosion zone transferred to the exit of the bended pipe. The erosion increased with increase of particle size when the particle had a small diameter, but decreased when the particle reached the diameter of 600 μm.
GUO Jiang
,
ZHANG Bixiao
. Numerical investigation of impact erosion in liquid-solid two-phase flow of the backfilling pipe[J]. Science & Technology Review, 2015
, 33(11)
: 49
-53
.
DOI: 10.3981/j.issn.1000-7857.2015.11.008
[1] 张德明. 深井充填管道磨损机理及可靠性评价体系研究[D]. 长沙: 中南大学, 2012: 59-79. Zhang Deming. A study on wear mechanism and the reliability evaluation system for backfilling pipelines in deep mine[D]. Changsha: Central South University, 2012: 59-79.
[2] 梁颖, 袁宗明, 陈学敏, 等. 基于CFD的液固两相流冲刷腐蚀预测研究[J]. 石油化工应用, 2014, 33(2): 103-106. Liang Ying, Yuan Zongming, Chen Xuemin, et al. Liquid solid two phase erosion corrosion prediction based on CFD[J]. Petrochemical Industry Application, 2014, 33(2): 103-106.
[3] 杨建胜, 罗坤, 王则力. 煤粉颗粒对管道壁面磨损的数值模拟研究[J]. 能源工程, 2010(4): 1-4. Yang Jiansheng, Luo Kun, Wang Zeli. Numerical study of solid particle erosion on sidewall[J]. Energy Source Engineering, 2010(4): 1-4.
[4] 吴迪, 蔡嗣经, 杨威, 等. 基于CFD的充填管道固液两相流输送模拟及试验[J]. 中国有色金属学报, 2012, 22(7): 2133-2140. Wu Di, Cai Sijing, Yang Wei, et al. Simulation and experiment of backfilling pipeline transportation of solid-liquid two-phase flow based on CFD[J]. The Chinese Journal of Nonferrous Metals, 2012, 22(7): 2133- 2140.
[5] 吴磊. 粗颗粒固液两相的数值模拟[D]. 杭州: 杭州电子科技大学, 2010: 29-41. Wu Lei. Simulation of liquid-solid two phase of coarse particles in pipes[J]. Hangzhou: Hangzhou Dianzi University, 2010: 29-41.
[6] Pereira G C, de Souza F J, de Moro Martins D A. Numerical prediction of the erosion due to particles in elbows[J]. Powder Technology, 2014, 261: 105-117.
[7] Parsi M, Najmi K, Najafifard F, et al. A comprehensive review of solid particle erosion modeling for oil and gas wells and pipelines applications[J]. Journal of Natural Gas Science and Engineering, 2014, 21: 850-873.
[8] Njobuenwu D O, Fairweather M. Modeling of pipe bend erosion by dilute particle suspensions[J]. Computers and Chemical Engineering, 2012, 42: 235-247.
[9] 刘晓辉, 吴爱祥, 王洪江, 等. 深井矿山充填满管输送理论及应用[J]. 北京科技大学学报, 2013, 35(9): 1113-1118. Liu Xiaohui, Wu Aixiang, Wang Hongjiang, et al. Full- flow transport theory and its application in deep mine backfilling[J]. Journal of University of Science and Technology Beijing, 2013, 35(9): 1113-1118.
[10] Walker C I, Hambe M. Influence of particle shape on slurry wear of white iron[J]. Wear, 2014, http://dx.doi.org/10.1016/j.wear.2014.12.029.
[11] 王凯, 李秀峰, 王跃社, 等. 液固两相流中固体颗粒对弯管冲蚀破坏的位置预测[J]. 工程热物理学报, 2014, 35(4): 91-694. Wang Kai, Li Xiufeng, Wang Yueshe, et al. Numerical prediction of the maximum erosion location in liquid-solid two-phase flow of the elbow[J]. Journal of Engineering Thermo physics, 2014, 35(4): 691-694.
[12] 汪家琼, 叶群, 闫科委, 等. 颗粒直径对渣浆泵冲蚀磨损性能的影响[J]. 排灌机械工程学报, 2014, 32(10): 840-844. Wang Jiaqiong, Ye Qun, Yan Kewei, et al. Effects of particle diameter on erosion wear performance of slurry pump[J]. Journal of Drainage and Irrigation Machinery Engineering, 2014, 32(10): 840-844.
