|Experimental and numerical studies on corrosion failure of a three-limb pipe in natural gas field|
|Wang, Zhongyi; Liu, Bin; Yang, Yange; Han, Nannan; Zeng, Guanxin; Ren, Aoyu; Zhang, Tao; Zhang, T (reprint author), Harbin Engn Univ, Coll Power & Energy Engn, Nantong ST 145, Harbin 150001, Peoples R China.
|发表期刊||ENGINEERING FAILURE ANALYSIS
|摘要||A bursting incident occurred in a three-limb pipe, having 16Mn steel for the main pipe and 316L + L416 composite metal for the branch pipe, in a natural gas field. The failure analysis was performed by means of inspection, experiments and computational fluid dynamics (CFD) simulation. The CFD results indicated the radical change in the flow characteristics inside the three-limb pipe due to its upright structure and the formation of a low vortex in the downstreamnear the junction, which indicated the condensation of water vapor containing high salinity. The condensed brine saturated with CO2 adhered to the inner wall surface of the main pipe. In such a corrosive medium, 16Mn steel acts as an anode and is preferentially corroded due to galvanic corrosion. In addition, the downstream area, covered by low vortex, exhibited high shear stress and droplet impingement stress, resulting in an increase in flow erosion. Thus, the failure of the three-limb pipe can be attributed to the synergistic effect of galvanic corrosion and flow erosion. (C) 2015 Elsevier Ltd. All rights reserved.|
; ren, aoyu] harbin engn univ, coll power & energy engn, nantong st 145, harbin 150001, peoples r china
; [liu, bin
; han, nannan
; zhang, tao] harbin engn univ, corros & protect lab, minist educ, key lab superlight mat & surface technol, nantong st 145, harbin 150001, peoples r china
; [yang, yange
; zhang, tao] chinese acad sci, inst met res, lab corros & protect, wencui rd 62, shenyang 110016, peoples r china
; [zeng, guanxin] petrochina tarim oilfield co, north tarim management dept, explorat & dev project, shihua rd, korla 841000, peoples r china
; Materials Science
|通讯作者||Zhang, T (reprint author), Harbin Engn Univ, Coll Power & Energy Engn, Nantong ST 145, Harbin 150001, Peoples R China.|
Wang, Zhongyi,Liu, Bin,Yang, Yange,et al. Experimental and numerical studies on corrosion failure of a three-limb pipe in natural gas field[J]. ENGINEERING FAILURE ANALYSIS,2016,62:21-38.
Wang, Zhongyi.,Liu, Bin.,Yang, Yange.,Han, Nannan.,Zeng, Guanxin.,...&Zhang, T .(2016).Experimental and numerical studies on corrosion failure of a three-limb pipe in natural gas field.ENGINEERING FAILURE ANALYSIS,62,21-38.
Wang, Zhongyi,et al."Experimental and numerical studies on corrosion failure of a three-limb pipe in natural gas field".ENGINEERING FAILURE ANALYSIS 62(2016):21-38.