eprintid: 16733 rev_number: 2 eprint_status: archive userid: 1 dir: disk0/00/01/67/33 datestamp: 2023-12-19 03:23:15 lastmod: 2023-12-19 03:23:15 status_changed: 2023-12-19 03:06:47 type: article metadata_visibility: show creators_name: Yaqub, M.W. creators_name: Pendyala, R. title: Experimental Investigation of Three-Phase Flow Regime Transition in a Large Diameter 90° Bend and the Resultant Pressure Drop Prediction ispublished: pub keywords: Drops; Flow of water; Pressure drop; Rivers, Centrifugal Forces; Experimental investigations; Flow regimes transitions; Horizontal pipes; Large diameter; Oil water flow; Pipeline networks; Superficial velocity; Three-phase flow; Vertical pipes, Flow patterns note: cited By 1 abstract: The use of 90° bend is common in pipeline networks to connect the horizontal and vertical pipes in different orientations. The gas-oil-water flow pattern experiences a significant change while flowing through the bend. The centrifugal and gravitational forces influence the upstream flow pattern and transform it into a different type in the downstream pipe. An experimental study is conducted to identify flow pattern transformation in horizontal to vertical upward bend having an (R/d) ratio of 1. Each phase velocity affects the flow patterns; hence, the superficial velocities have been varied in the range of 0.5-5, 0.08-0.36, and 0.08-0.36 m/s for gas, oil, and water, respectively. The three-phase flow patterns in the bend's horizontal and vertical legs have been identified and discussed in detail. Flow regime transition maps are plotted, and the variation in flow patterns with the change in superficial velocities of fluids has been analyzed. The pressure drop has been analyzed, and the prediction model for total pressure drop across the bend has been developed. The comparison of the experimental and predicted results showed close agreement. © 2022 American Chemical Society. All rights reserved. date: 2022 publisher: American Chemical Society official_url: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85131073956&doi=10.1021%2facs.iecr.2c00098&partnerID=40&md5=e57843897433a6254fca33b664738b4d id_number: 10.1021/acs.iecr.2c00098 full_text_status: none publication: Industrial and Engineering Chemistry Research volume: 61 number: 20 pagerange: 7090-7102 refereed: TRUE issn: 08885885 citation: Yaqub, M.W. and Pendyala, R. (2022) Experimental Investigation of Three-Phase Flow Regime Transition in a Large Diameter 90° Bend and the Resultant Pressure Drop Prediction. Industrial and Engineering Chemistry Research, 61 (20). pp. 7090-7102. ISSN 08885885