Please use this identifier to cite or link to this item: https://doi.org/10.1016/S0009-2509(03)00306-3
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dc.titleElectrical capacitance tomography measurements on vertical and inclined pneumatic conveying of granular solids
dc.contributor.authorZhu, K.
dc.contributor.authorMadhusudana Rao, S.
dc.contributor.authorWang, C.-H.
dc.contributor.authorSundaresan, S.
dc.date.accessioned2014-05-16T07:24:27Z
dc.date.available2014-05-16T07:24:27Z
dc.date.issued2003-09
dc.identifier.citationZhu, K., Madhusudana Rao, S., Wang, C.-H., Sundaresan, S. (2003-09). Electrical capacitance tomography measurements on vertical and inclined pneumatic conveying of granular solids. Chemical Engineering Science 58 (18) : 4225-4245. ScholarBank@NUS Repository. https://doi.org/10.1016/S0009-2509(03)00306-3
dc.identifier.issn00092509
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/52655
dc.description.abstractPneumatic conveying of granular solids in vertical and inclined risers was studied using electrical capacitance tomography (ECT). The focus of the study was on flow development past a smooth bend connecting the riser to a horizontal duct which brought the gas-particle mixture to the riser. In the vertical riser, dispersed flow manifested a core-annular structure, whose development is discussed. Three different time-dependent flow patterns were imaged. Slugging flow, which appeared to be intrinsic to riser flow, took the form of alternating bands of core-annular disperse flow and a slug with a particle-rich core. Averaging over these two structures yielded a composite distribution with high particle concentration both at the axis and the wall region. Pulsing flow, whose ECT fingerprint was similar to that of slugging flow, was largely an entrance effect. Stationary and moving annular capsules with a dilute core were also observed, and such flow patterns do not appear to have been reported previously. Our ECT measurements probing the development of disperse flow in an inclined riser past a bend revealed that the particle loading initially decreased, subsequently increased and then leveled off. Regimes such as eroding dune flow and flow over a settled layer could be easily imaged using ECT. The surface of the settled layer had a concave shape, suggesting that the particles were picked up from the settled layer by airflow at the center and deposited on the sides of the tube. © 2003 Elsevier Ltd. All rights reserved.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1016/S0009-2509(03)00306-3
dc.sourceScopus
dc.subjectCapacitance tomography
dc.subjectGranular material
dc.subjectPneumatic conveying
dc.typeArticle
dc.contributor.departmentSINGAPORE-MIT ALLIANCE
dc.contributor.departmentCHEMICAL & ENVIRONMENTAL ENGINEERING
dc.description.doi10.1016/S0009-2509(03)00306-3
dc.description.sourcetitleChemical Engineering Science
dc.description.volume58
dc.description.issue18
dc.description.page4225-4245
dc.description.codenCESCA
dc.identifier.isiut000185375200011
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