Print Email Facebook Twitter Predicting density wave amplification of settling slurries using a 1D Driftux model Title Predicting density wave amplification of settling slurries using a 1D Driftux model Author de Hoog, E. (Royal IHC) van Wijk, J. M. (IHC IQIP) Talmon, A.M. (TU Delft Offshore and Dredging Engineering) van Rhee, C. (TU Delft Offshore and Dredging Engineering; TU Delft Rivers, Ports, Waterways and Dredging Engineering) Date 2022 Abstract Density wave amplification in hydraulic transport pipelines forms a high risk to operational continuity, as density waves can lead to system blockages or centrifugal pump drive failures. Recent experimental research, in pipelines which contain long vertical sections, has shown that density waves can amplify at velocities far exceeding the deposit limit velocity, previously thought to be a limiting condition for amplification. The typical design methodology of hydraulic transport pipelines is based on a steady-state philosophy, which assumes that the mixture velocity and sediment concentration are constant in time and space. However, these variations can lead to the amplification of density waves. This article discusses the cause of a new type of density wave amplification mechanism, which is related to slurry dynamics in a pipeline containing vertical sections. This research also presents a 1D Driftflux CFD model which models the aforementioned slurry dynamics and can predict density wave amplification. Subject 1D Driftflux modelDeep sea miningDredgingFlow assuranceHydraulic transientsHydraulic transport To reference this document use: http://resolver.tudelft.nl/uuid:93b8730f-9437-4c26-8da8-3d05a8e5dc69 DOI https://doi.org/10.1016/j.powtec.2022.117252 Embargo date 2023-07-01 ISSN 0032-5910 Source Powder Technology, 400 Bibliographical note Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public. Part of collection Institutional Repository Document type journal article Rights © 2022 E. de Hoog, J. M. van Wijk, A.M. Talmon, C. van Rhee Files PDF 1_s2.0_S0032591022001462_main.pdf 2.55 MB Close viewer /islandora/object/uuid:93b8730f-9437-4c26-8da8-3d05a8e5dc69/datastream/OBJ/view