{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,9]],"date-time":"2025-10-09T00:56:28Z","timestamp":1759971388745,"version":"build-2065373602"},"reference-count":90,"publisher":"AIP Publishing","issue":"10","funder":[{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["52301326"],"award-info":[{"award-number":["52301326"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100010031","name":"Postdoctoral Research Foundation of China","doi-asserted-by":"publisher","award":["2023M731999"],"award-info":[{"award-number":["2023M731999"]}],"id":[{"id":"10.13039\/501100010031","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["pubs.aip.org"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2025,10,1]]},"abstract":"<jats:p>The understanding and prediction of slurry flow behavior in pipeline systems is critical for successful operation and management of various industrial applications due to the inherent complexity of such solid\u2013liquid mixtures. Thus, fundamental experimental investigations and an easy-to-use, efficient computational fluid dynamics model meeting engineering requirements are essential. This study first preliminarily explores the physical process of slurry flow, composed of uniformly graded glass beads at different concentrations, via laboratory tests. These tests use electrical impedance tomography (EIT) and sampling probe techniques to measure particle volume fraction distribution in a 100\u2009mm diameter pipe. A key contribution is a novel, efficient two-fluid model requiring calibration of one parameter, turbulent Schmidt number \u03c3: it offers fast predictions and reasonable estimates of concentration profiles and hydraulic gradients in horizontal pipes post-calibration, assuming full particle suspension (in situ concentration ideally &amp;lt;30% v\/v) and neglecting particle\u2013particle interactions. The study finds \u03c3 primarily depends on pipe diameter and establishes potential correlations between \u03c3, pipe diameter, and Reynolds number, simplifying calibration across flow conditions and geometries. While not a fundamental theoretical advance, the proposed model enhances predictive capability by minimizing empirical uncertainty and enabling reliable extrapolation beyond validation cases. Moreover, experimental results confirm that EIT provides a qualitative yet robust visualization of particle distribution, demonstrating its promise when integrated with advanced reconstruction algorithms. These findings provide both theoretical insight and practical tools for slurry transport analysis, with particular value in engineering contexts, such as dredging, mining, and offshore pipeline operations.<\/jats:p>","DOI":"10.1063\/5.0291404","type":"journal-article","created":{"date-parts":[[2025,10,8]],"date-time":"2025-10-08T13:48:33Z","timestamp":1759931313000},"update-policy":"https:\/\/doi.org\/10.1063\/aip-crossmark-policy-page","source":"Crossref","is-referenced-by-count":0,"title":["A novel single-parameter two-fluid model for slurry pipe flow: Predictive capability and parameter characteristics"],"prefix":"10.1063","volume":"37","author":[{"ORCID":"https:\/\/orcid.org\/0009-0009-6748-7195","authenticated-orcid":false,"given":"Qi","family":"Yang","sequence":"first","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1088-4554","authenticated-orcid":false,"given":"Gianandrea V.","family":"Messa","sequence":"additional","affiliation":[{"name":"Department of Civil and Environmental Engineering, Politecnico di Milano 2 , Milano 20133,","place":["Italy"]}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5539-9766","authenticated-orcid":false,"given":"Pedro","family":"Faia","sequence":"additional","affiliation":[{"name":"CEMMPRE-Department of Electrical and Computer Engineering, FCTUC, University of Coimbra 3 , Coimbra 3030-290,","place":["Portugal"]}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6084-4553","authenticated-orcid":false,"given":"Maria G.","family":"Rasteiro","sequence":"additional","affiliation":[{"name":"CERES-Department of Chemical Engineering, University of Coimbra 4 ,","place":["Coimbra 3030-290, Portugal"]}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7759-4818","authenticated-orcid":false,"given":"Fernando A. 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