eprintid: 11613 rev_number: 2 eprint_status: archive userid: 1 dir: disk0/00/01/16/13 datestamp: 2023-11-10 03:26:08 lastmod: 2023-11-10 03:26:08 status_changed: 2023-11-10 01:15:41 type: article metadata_visibility: show creators_name: Mohmmed, A.O. creators_name: Al-Kayiem, H.H. creators_name: Nasif, M.S. creators_name: Time, R.W. title: Effect of slug flow frequency on the mechanical stress behavior of pipelines ispublished: pub keywords: Mechanical engineering; Pressure vessels, Damage and failure; Horizontal pipes; Industrial processs; Measuring technique; Slug flow; Slug frequencies; Stress behavior; Time-varying stress, High speed cameras note: cited By 20 abstract: Slug flow is a prevalent and undesirable multiphase flow regime which occurs in many industrial processes, causing time varying stresses in pipes and supports and consequently causes structural fatigue damage and failure. In this study, a series of experimental tests were conducted to address the effect of the slug frequency on the stresses of structural pipes. The slug frequency was measured using non-intrusive measuring technique through utilizing Phantom 9.1 high speed camera, while the pipe wall strain was captured using bi-axial strain gauges. The effects of the superficial gas and liquid velocities on the slug frequency were investigated. Additionally, the relation between the slug frequency and the induced stresses was examined. Moreover, a Slug Frequency Stress Prediction Model (SFSPM) based on the exerted slug unit forces was developed and validated. The presented results revealed that an excellent correlation with a deviation of 0.7 between the predicted and experimental stresses was achieved. © 2019 Elsevier Ltd date: 2019 publisher: Elsevier Ltd official_url: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85062817877&doi=10.1016%2fj.ijpvp.2019.03.012&partnerID=40&md5=c1ee1cde3222687cfac23d3880d67965 id_number: 10.1016/j.ijpvp.2019.03.012 full_text_status: none publication: International Journal of Pressure Vessels and Piping volume: 172 pagerange: 1-9 refereed: TRUE issn: 03080161 citation: Mohmmed, A.O. and Al-Kayiem, H.H. and Nasif, M.S. and Time, R.W. (2019) Effect of slug flow frequency on the mechanical stress behavior of pipelines. International Journal of Pressure Vessels and Piping, 172. pp. 1-9. ISSN 03080161