PSI - Issue 41

Available online at www.sciencedirect.com vailable online at .sciencedirect.co Available online at www.sciencedirect.com ScienceDirect StructuralIntegrity Procedia 00 (2022) 000–000

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ScienceDirect

Procedia Structural Integrity 41 (2022) 752–758 StructuralIntegrity Procedia 00 (2022) 000–000

www.elsevier.com/locate/procedia

2452-3216 © 2022 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the MedFract2Guest Editors. 10.1016/j.prostr.2022.05.087 2452-3216 © 2022 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license ( https://creativecommons.org/licenses/by-nc-nd/4.0 ) Peer-review under responsibility of the MedFract2Guest Editors. 2452-3216 © 2022 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license ( https://creativecommons.org/licenses/by-nc-nd/4.0 ) Peer-review under responsibility of the MedFract2Gu st Editors. © 2022 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the MedFract2Guest Editors. Abstract Simulations CFD-ABAQUS based erosion prediction for elbow bend with R/D =1.5were performed using a comprehensive procedure included flow simulation, particle tracking and erosion calculation. Three different erosion-corrosion positions of high pressure are localized in the intrados under opening bend with internal pressure. The estimation of erosion-corrosion region with high pressure is simulation as semi-elliptical crack. The CFD-ABAQUS and visual observations with areal situation in desalination plant were compared with available literature results showing reasonably good agreements. Increasing in the radius and curvature of elbow pipe and different bonding of composite are proposed to reduce the bend moment in the corrosion position to replace/repair the original elbow. The results presented in this paper will shed some light on the importance of location of maximum erosion and to propose engineering solutions to repair/ replace in the bend pipe geometry. Keywords: CFD-ABAQUS, erosion-corrosion; elbow, semi-elliptical crack; pressure. 1. INTRODUCTION AND BACKGROUND A literature review on mitered and curved pipe bends has performed between 1889 and 1966 on in-plane and out-of plane bending capacity [1]. The flexibility problem of a pipe bend using an strain energy and complementary energy method has assessed without taking into consideration the out-of-plane bending or internal pressure Spence et al.[2]. Several papers where made using analytical and finite element method (FEA) to study hoop stresses within the pipe bend and compare to standards recommendations , Austin & Swannell [3]. In [4], has used ABAQUS software to perform the numerical analysis utilising Elbow elements with maximum ovality of 1% under constant internal pressure and cyclic in-plane and out-of-plane bending moment. The research is more direct to engineers and its objective is to define a limit state design. Abstract Simulations CFD-ABAQUS based erosion prediction for elbow bend with R/D =1.5were performed using a comprehensive procedure included flow simulation, particle tracking and erosion calculation. Three different erosion-corrosion positions of high pre sure are localized in the intrados under opening bend with internal pressure. The estimation of erosion-corrosion region with high pressure is simulation as semi-elliptical crack. The CFD-ABAQUS and visual observations with areal situation in desalination plant were compared with available literature r sults showing reasonably good agreements. Increasing in the rad us and curvature of elb pipe nd different bond of comp site are pr posed to reduce the be d moment in the corros on osition to repl ce/repair the original elbow. The results presented in this paper will shed s m light on the importa ce of location of max mum erosi nd to propose engineering solutions to repair/ replace in the bend pipe geome ry. Keywords: CFD-ABAQUS, erosion-corrosion; elbow, semi-elliptical crack; pressure. 1. INTRODUCTION AND BACKGROUND A literature review on mitered and curved pipe bends has performed between 1889 and 1966 on in-plane and out-of plane bending capacity [1]. The flexibility problem of a pipe bend using an strain energy and complementary energy method has assessed without taking into consideration the out-of-plane bending or internal pressure Spence et al.[2]. Several papers where made using analytical and finite element method (FEA) to study hoop stresses within the pipe bend and compare to standards recommendations , Austin & Swannell [3]. In [4], has used ABAQUS software to perform the numerical analysis utilising Elbow elements with maximum ovality of 1% under constant internal pressure and cyclic in-plane and out-of-plane bending moment. The research is more direct to engineers and its objective is to define a limit state design. * M.Hadj Meliani. Tel.: +2130696623292; fax: +213 (0)27 72 70 6 E-mail : m.hadj m lia i@univ-chlef.dz. LPTPM, Hassiba BenBouali University of Chlef, Esalem City, Chlef 02000, Algeria. 2nd Mediterranean Conference on Fracture and Structural Integrity Proposal Engineering Methods to Repair/Replace Bend Elbow Pipe Contain Internal Corrosion Defect Chaaben Arroussi a , Amara Mouna a , Mohammed Hadj Meliani a,* , Guy Pluvinage b a LPTPM, Hassiba BenBouali University of Chlef,P.O. Box 151, Hay Salem Chlef 02000. Algeria 213 b LE3M, University of Lorraine, Metz 57070. France 2nd Mediterranean Conference on Fracture and Structural Integrity Proposal Engineering Methods to Repair/Replace Bend Elbow Pipe Contain Internal Corrosion Defect Chaaben Arroussi a , Amara Mouna a , Mohammed Hadj Meliani a,* , Guy Pluvinage b a LPTPM, Hassiba BenBouali University of Chlef,P.O. Box 151, Hay Salem Chlef 02000. Algeria 213 b LE3M, University of Lorraine, Metz 57070. France * M.Hadj Meliani. Tel.: +2130696623292; fax: +213 (0)27 72 70 6 E-mail : m.hadj meliani@univ-chlef.dz. LPTPM, Hassiba BenBouali University of Chlef, Esalem City, Chlef 02000, Algeria.