### 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 |
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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 Jan 1 |

Event | Computational Methods in Water Resources - Calgary, Canada Duration: 2000 Jun 25 → 2000 Jun 29 |

### Other

Other | Computational Methods in Water Resources |
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Country | Canada |

City | Calgary |

Period | 00/6/25 → 00/6/29 |

### Fingerprint

### All Science Journal Classification (ASJC) codes

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

### Cite this

*Computational methods in water resources - Volume 2 - Computational methods,surface water systems and hydrology*(pp. 881-887). A.A.Balkema.

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*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.

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

TY - GEN

T1 - Simulation of two-dimensional density currents developing on a slope

AU - Choi, S. U.

AU - Chung, J.

PY - 2000/1/1

Y1 - 2000/1/1

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.

UR - http://www.scopus.com/inward/record.url?scp=0033668832&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0033668832&partnerID=8YFLogxK

M3 - Conference contribution

SN - 9058091252

SP - 881

EP - 887

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

A2 - Bentley, L.R.

A2 - Sykes, J.F.

A2 - Brebbia, C.A.

A2 - Gray, W.G.

A2 - Pinder, G.F.

A2 - Bentley, L.R.

A2 - Sykes, J.F.

A2 - Brebbia, C.A.

A2 - Gray, W.G.

A2 - Pinder, G.F.

PB - A.A.Balkema

ER -