Numerical Simulation of Density Current Evolution in a Diverging Channel
Joint Authors
Javan, Mitra
Eghbalzadeh, Afshin
Montazeri Namin, Masoud
Source
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-02-07
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Abstract EN
When a buoyant inflow of higher density enters a reservoir, it sinks below the ambient water and forms an underflow.
Downstream of the plunge point, the flow becomes progressively diluted due to the fluid entrainment.
This study seeks to explore the ability of 2D width-averaged unsteady Reynolds-averaged Navier-Stokes (RANS) simulation approach for resolving density currents in an inclined diverging channel.
2D width-averaged unsteady RANS equations closed by a buoyancy-modified k−ε turbulence model are integrated in time with a second-order fractional step approach coupled with a direct implicit method and discretized in space on a staggered mesh using a second-order accurate finite volume approach incorporating a high-resolution semi-Lagrangian technique for the convective terms.
A series of 2D width-averaged unsteady simulations is carried out for density currents.
Comparisons with the experimental measurements and the other numerical simulations show that the predictions of velocity and density field are with reasonable accuracy.
American Psychological Association (APA)
Javan, Mitra& Eghbalzadeh, Afshin& Montazeri Namin, Masoud. 2012. Numerical Simulation of Density Current Evolution in a Diverging Channel. Advances in Civil Engineering،Vol. 2012, no. 2012, pp.1-8.
https://search.emarefa.net/detail/BIM-494037
Modern Language Association (MLA)
Javan, Mitra…[et al.]. Numerical Simulation of Density Current Evolution in a Diverging Channel. Advances in Civil Engineering No. 2012 (2012), pp.1-8.
https://search.emarefa.net/detail/BIM-494037
American Medical Association (AMA)
Javan, Mitra& Eghbalzadeh, Afshin& Montazeri Namin, Masoud. Numerical Simulation of Density Current Evolution in a Diverging Channel. Advances in Civil Engineering. 2012. Vol. 2012, no. 2012, pp.1-8.
https://search.emarefa.net/detail/BIM-494037
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-494037