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- Publisher Website: 10.1139/cgj-2018-0622
- Scopus: eid_2-s2.0-85078541145
- WOS: WOS:000509712300006
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Article: Interaction between dry granular flow and rigid barrier with basal clearance: analytical and physical modelling
Title | Interaction between dry granular flow and rigid barrier with basal clearance: analytical and physical modelling |
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Authors | |
Keywords | basal clearance dry granular flow rigid barrier flume modelling |
Issue Date | 2020 |
Publisher | NRC Research Press. The Journal's web site is located at http://pubs.nrc-cnrc.gc.ca/cgi-bin/rp/rp2_desc_e?cgj |
Citation | Canadian Geotechnical Journal, 2020, v. 57 n. 2, p. 236-245 How to Cite? |
Abstract | Some types of barriers are designed with a clearance between the bottom of the barrier and the channel bed. This feature allows small discharges to pass, thereby reducing the maintenance required over the service life of the barrier. Aside from the practical function of a clearance, it influences the impact force, jump height, and discharge. In this paper, a series of physical experiments was conducted using a 6 m long flume to model the interaction between dry granular flow and rigid barrier with a basal clearance. The ratio between the clearance and particle diameter Hc/D was varied from 0 to 10. The channel inclination was varied from 15° to 35° to achieve different Froude numbers before impact. A new impact model for predicting impact force exerted on the barrier with a basal clearance is presented and evaluated. Results reveal that Hc ≥ 3D is capable of reducing the impact force and overflow. Findings from this study highlight the importance of considering the effects of basal clearance on the design of multiple-barrier systems. |
Persistent Identifier | http://hdl.handle.net/10722/284243 |
ISSN | 2023 Impact Factor: 3.0 2023 SCImago Journal Rankings: 1.513 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Choi, CE | - |
dc.contributor.author | Ng, CWW | - |
dc.contributor.author | Liu, H | - |
dc.contributor.author | Wang, Y | - |
dc.date.accessioned | 2020-07-20T05:57:11Z | - |
dc.date.available | 2020-07-20T05:57:11Z | - |
dc.date.issued | 2020 | - |
dc.identifier.citation | Canadian Geotechnical Journal, 2020, v. 57 n. 2, p. 236-245 | - |
dc.identifier.issn | 0008-3674 | - |
dc.identifier.uri | http://hdl.handle.net/10722/284243 | - |
dc.description.abstract | Some types of barriers are designed with a clearance between the bottom of the barrier and the channel bed. This feature allows small discharges to pass, thereby reducing the maintenance required over the service life of the barrier. Aside from the practical function of a clearance, it influences the impact force, jump height, and discharge. In this paper, a series of physical experiments was conducted using a 6 m long flume to model the interaction between dry granular flow and rigid barrier with a basal clearance. The ratio between the clearance and particle diameter Hc/D was varied from 0 to 10. The channel inclination was varied from 15° to 35° to achieve different Froude numbers before impact. A new impact model for predicting impact force exerted on the barrier with a basal clearance is presented and evaluated. Results reveal that Hc ≥ 3D is capable of reducing the impact force and overflow. Findings from this study highlight the importance of considering the effects of basal clearance on the design of multiple-barrier systems. | - |
dc.language | eng | - |
dc.publisher | NRC Research Press. The Journal's web site is located at http://pubs.nrc-cnrc.gc.ca/cgi-bin/rp/rp2_desc_e?cgj | - |
dc.relation.ispartof | Canadian Geotechnical Journal | - |
dc.rights | Canadian Geotechnical Journal. Copyright © NRC Research Press. | - |
dc.subject | basal clearance | - |
dc.subject | dry granular flow | - |
dc.subject | rigid barrier | - |
dc.subject | flume modelling | - |
dc.title | Interaction between dry granular flow and rigid barrier with basal clearance: analytical and physical modelling | - |
dc.type | Article | - |
dc.identifier.email | Choi, CE: cechoi@hku.hk | - |
dc.identifier.authority | Choi, CE=rp02576 | - |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1139/cgj-2018-0622 | - |
dc.identifier.scopus | eid_2-s2.0-85078541145 | - |
dc.identifier.hkuros | 311030 | - |
dc.identifier.hkuros | 315848 | - |
dc.identifier.volume | 57 | - |
dc.identifier.issue | 2 | - |
dc.identifier.spage | 236 | - |
dc.identifier.epage | 245 | - |
dc.identifier.isi | WOS:000509712300006 | - |
dc.publisher.place | Canada | - |
dc.identifier.issnl | 0008-3674 | - |