Simulation of two-dimensional density currents developing on a slope

S. U. Choi; J. Chung

Simulation of two-dimensional density currents developing on a slope

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

Dense underflows developing on a slope two-dimensionally are simulated numerically. The k-ε model is used for the turbulence closure. The boundary-layer approximation renders the governing equations to be parabolic partial differential equations, which are easier to solve numerically than elliptic equations. Evolution of vertical structures of dense underflows are computed along the streamwise direction. Excellent similarity collapse of computed vertical structures are obtained. Computed profiles of velocity and concentration are compared with measured data, resulting good agreement. A parameter representing stratification level in the k-ε model is calibrated, and the use of this calibrated value in the vertical structure model yields nearly identical results with the integral model.

Original language	English
Title of host publication	Computational methods in water resources - Volume 2 - Computational methods,surface water systems and hydrology
Editors	L.R. Bentley, J.F. Sykes, C.A. Brebbia, W.G. Gray, G.F. Pinder, L.R. Bentley, J.F. Sykes, C.A. Brebbia, W.G. Gray, G.F. Pinder
Publisher	A.A. Balkema
Pages	881-887
Number of pages	7
ISBN (Print)	9058091252
Publication status	Published - 2000
Event	Computational Methods in Water Resources - Calgary, Canada Duration: 2000 Jun 25 → 2000 Jun 29

Other

Other	Computational Methods in Water Resources
Country/Territory	Canada
City	Calgary
Period	00/6/25 → 00/6/29

All Science Journal Classification (ASJC) codes

Earth and Planetary Sciences(all)
Engineering(all)
Environmental Science(all)

Cite this

Choi, S. U., & Chung, J. (2000). Simulation of two-dimensional density currents developing on a slope. In L. R. Bentley, J. F. Sykes, C. A. Brebbia, W. G. Gray, G. F. Pinder, L. R. Bentley, J. F. Sykes, C. A. Brebbia, W. G. Gray, & G. F. Pinder (Eds.), Computational methods in water resources - Volume 2 - Computational methods,surface water systems and hydrology (pp. 881-887). A.A. Balkema.

Choi, S. U. ; Chung, J. / Simulation of two-dimensional density currents developing on a slope. Computational methods in water resources - Volume 2 - Computational methods,surface water systems and hydrology. editor / L.R. Bentley ; J.F. Sykes ; C.A. Brebbia ; W.G. Gray ; G.F. Pinder ; L.R. Bentley ; J.F. Sykes ; C.A. Brebbia ; W.G. Gray ; G.F. Pinder. A.A. Balkema, 2000. pp. 881-887

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title = "Simulation of two-dimensional density currents developing on a slope",

abstract = "Dense underflows developing on a slope two-dimensionally are simulated numerically. The k-ε model is used for the turbulence closure. The boundary-layer approximation renders the governing equations to be parabolic partial differential equations, which are easier to solve numerically than elliptic equations. Evolution of vertical structures of dense underflows are computed along the streamwise direction. Excellent similarity collapse of computed vertical structures are obtained. Computed profiles of velocity and concentration are compared with measured data, resulting good agreement. A parameter representing stratification level in the k-ε model is calibrated, and the use of this calibrated value in the vertical structure model yields nearly identical results with the integral model.",

author = "Choi, {S. U.} and J. Chung",

year = "2000",

language = "English",

isbn = "9058091252",

pages = "881--887",

editor = "L.R. Bentley and J.F. Sykes and C.A. Brebbia and W.G. Gray and G.F. Pinder and L.R. Bentley and J.F. Sykes and C.A. Brebbia and W.G. Gray and G.F. Pinder",

booktitle = "Computational methods in water resources - Volume 2 - Computational methods,surface water systems and hydrology",

publisher = "A.A. Balkema",

address = "Netherlands",

note = "Computational Methods in Water Resources ; Conference date: 25-06-2000 Through 29-06-2000",

}

Choi, SU & Chung, J 2000, Simulation of two-dimensional density currents developing on a slope. in LR Bentley, JF Sykes, CA Brebbia, WG Gray, GF Pinder, LR Bentley, JF Sykes, CA Brebbia, WG Gray & GF Pinder (eds), Computational methods in water resources - Volume 2 - Computational methods,surface water systems and hydrology. A.A. Balkema, pp. 881-887, Computational Methods in Water Resources, Calgary, Canada, 00/6/25.

Simulation of two-dimensional density currents developing on a slope. / Choi, S. U.; Chung, J.
Computational methods in water resources - Volume 2 - Computational methods,surface water systems and hydrology. ed. / L.R. Bentley; J.F. Sykes; C.A. Brebbia; W.G. Gray; G.F. Pinder; L.R. Bentley; J.F. Sykes; C.A. Brebbia; W.G. Gray; G.F. Pinder. A.A. Balkema, 2000. p. 881-887.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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AU - Chung, J.

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N2 - Dense underflows developing on a slope two-dimensionally are simulated numerically. The k-ε model is used for the turbulence closure. The boundary-layer approximation renders the governing equations to be parabolic partial differential equations, which are easier to solve numerically than elliptic equations. Evolution of vertical structures of dense underflows are computed along the streamwise direction. Excellent similarity collapse of computed vertical structures are obtained. Computed profiles of velocity and concentration are compared with measured data, resulting good agreement. A parameter representing stratification level in the k-ε model is calibrated, and the use of this calibrated value in the vertical structure model yields nearly identical results with the integral model.

AB - Dense underflows developing on a slope two-dimensionally are simulated numerically. The k-ε model is used for the turbulence closure. The boundary-layer approximation renders the governing equations to be parabolic partial differential equations, which are easier to solve numerically than elliptic equations. Evolution of vertical structures of dense underflows are computed along the streamwise direction. Excellent similarity collapse of computed vertical structures are obtained. Computed profiles of velocity and concentration are compared with measured data, resulting good agreement. A parameter representing stratification level in the k-ε model is calibrated, and the use of this calibrated value in the vertical structure model yields nearly identical results with the integral model.

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BT - Computational methods in water resources - Volume 2 - Computational methods,surface water systems and hydrology

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PB - A.A. Balkema

T2 - Computational Methods in Water Resources

Y2 - 25 June 2000 through 29 June 2000

ER -

Simulation of two-dimensional density currents developing on a slope

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