Numerical simulation of ash-spills induced by dike failure on ash tailings impoundments - a case study

Đorđević, Dejana; Komatina, Dejan; Jovanović, Miodrag

Authorized Users Only

2005

Authors

Đorđević, Dejana

Komatina, Dejan
Jovanović, Miodrag

Conference object (Published version)

Taylor & Francis Group

Metadata

Show full item record

Abstract

A model developed for simulation of both discontinuous clear-water flows and hyper-concentrated discontinuous flows is validated on a real dike failure event, which happened on an ash-tailings impoundment on site. Numerical model is based on the MacCormack finite-difference scheme and involves constitutive equation in a form of the general yield-power law (Herschel-Bulkley's rheological model). The influence of the solid phase volumetric concentration on the propagation characteristics of the dike-break wave is analysed. Rheological properties of ash-water mixtures are determined in the laboratory using a tube viscometer. Definition of the corresponding constitutive equations is based on the test results. In that respect, the rheological properties of ash may be described by the Bingham model.

Keywords:

hyper-concentrated flow / discontinuous flow / dike break / rheological model / numerical model / MacCormack numerical scheme

Source:
Proceedings of the 6th International Conference On Hydrodynamics - ICHD2004, 2005, 421-427

Publisher:

Taylor & Francis Group

Funding / projects:

Интегрално уређење водотока и одбрана од поплава у контексту одрживог развоја и заштите природних богатстава, МНТиР Републике Србије, Национални програм примењених и развојних истраживања уређења, заштите и коришћења вода у Србији
Унапређење методологије и модела за ефикасно праћење и управљање квалитетом вода у водотоцима, МНТиР Републике Србије, Национални програм примењених и развојних истраживања уређења, заштите и коришћења вода у Србији

TY  - CONF
AU  - Đorđević, Dejana
AU  - Komatina, Dejan
AU  - Jovanović, Miodrag
PY  - 2005
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/2279
AB  - A model developed for simulation of both discontinuous clear-water flows and hyper-concentrated discontinuous flows is validated on a real dike failure event, which happened on an ash-tailings impoundment on site. Numerical model is based on the MacCormack finite-difference scheme and involves constitutive equation in a form of the general yield-power law (Herschel-Bulkley's rheological model). The influence of the solid phase volumetric concentration on the propagation characteristics of the dike-break wave is analysed. Rheological properties of ash-water mixtures are determined in the laboratory using a tube viscometer. Definition of the corresponding constitutive equations is based on the test results. In that respect, the rheological properties of ash may be described by the Bingham model.
PB  - Taylor & Francis Group
C3  - Proceedings of the 6th International Conference On Hydrodynamics - ICHD2004
T1  - Numerical simulation of ash-spills induced by dike failure on ash tailings impoundments - a case study
EP  - 427
SP  - 421
UR  - https://hdl.handle.net/21.15107/rcub_grafar_2279
ER  -

@conference{
author = "Đorđević, Dejana and Komatina, Dejan and Jovanović, Miodrag",
year = "2005",
abstract = "A model developed for simulation of both discontinuous clear-water flows and hyper-concentrated discontinuous flows is validated on a real dike failure event, which happened on an ash-tailings impoundment on site. Numerical model is based on the MacCormack finite-difference scheme and involves constitutive equation in a form of the general yield-power law (Herschel-Bulkley's rheological model). The influence of the solid phase volumetric concentration on the propagation characteristics of the dike-break wave is analysed. Rheological properties of ash-water mixtures are determined in the laboratory using a tube viscometer. Definition of the corresponding constitutive equations is based on the test results. In that respect, the rheological properties of ash may be described by the Bingham model.",
publisher = "Taylor & Francis Group",
journal = "Proceedings of the 6th International Conference On Hydrodynamics - ICHD2004",
title = "Numerical simulation of ash-spills induced by dike failure on ash tailings impoundments - a case study",
pages = "427-421",
url = "https://hdl.handle.net/21.15107/rcub_grafar_2279"
}

Đorđević, D., Komatina, D.,& Jovanović, M.. (2005). Numerical simulation of ash-spills induced by dike failure on ash tailings impoundments - a case study. in Proceedings of the 6th International Conference On Hydrodynamics - ICHD2004
Taylor & Francis Group., 421-427.
https://hdl.handle.net/21.15107/rcub_grafar_2279

Đorđević D, Komatina D, Jovanović M. Numerical simulation of ash-spills induced by dike failure on ash tailings impoundments - a case study. in Proceedings of the 6th International Conference On Hydrodynamics - ICHD2004. 2005;:421-427.
https://hdl.handle.net/21.15107/rcub_grafar_2279 .

Đorđević, Dejana, Komatina, Dejan, Jovanović, Miodrag, "Numerical simulation of ash-spills induced by dike failure on ash tailings impoundments - a case study" in Proceedings of the 6th International Conference On Hydrodynamics - ICHD2004 (2005):421-427,
https://hdl.handle.net/21.15107/rcub_grafar_2279 .