Print Email Facebook Twitter Linear stability analysis reveals exclusion zone for sliding bed transport Title Linear stability analysis reveals exclusion zone for sliding bed transport Author Talmon, A.M. Faculty Mechanical, Maritime and Materials Engineering Department Marine and Transport Technology Date 2015-04-07 Abstract A bend or any another pipe component disturbs solids transport in pipes. Longitudinal pressure profiles downstream of such a component may show a stationary transient harmonic wave, as revealed by a recent settling slurry laboratory experiment. Therefore the fundamental transient response of the two-layer model for fully stratified flow is investigated as a first approach. A linear stability analysis of the sliding bed configuration is conducted. No stationary transient harmonic waves are found in this analysis, but adaptation lengths for exponential recovery are quantified. An example calculation is given for a 0.1 m diameter pipeline. Also consequences for long stretches of pipe line emerged. A so far undiscovered exclusion zone is found in the I-V diagram. This exclusion zone is situated adjacent to the deposit limit velocity locus curve. This simplified physical system reveals that flow velocities should be taken about 10% greater than the calculated maximum deposit limit velocity for stable converging flow. Subject stratificationhydrotransporttransientsbed layer To reference this document use: http://resolver.tudelft.nl/uuid:d54c7b9e-e86a-43e3-ac54-bde997bf128c Publisher De Gruyter Open ISSN 0042-790X Source https://doi.org/10.1515/johh-2015-0018 Source Journal of Hydrology and Hydromechanics, 63 (2), 2015 Part of collection Institutional Repository Document type journal article Rights © 2015 This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License (CC BY-NC-ND 3.0) Files PDF 319045.pdf 419.67 KB Close viewer /islandora/object/uuid:d54c7b9e-e86a-43e3-ac54-bde997bf128c/datastream/OBJ/view