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Three-dimensional modeling of density current in a straight channel

Firoozabadi, B ; Sharif University of Technology | 2009

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  1. Type of Document: Article
  2. DOI: 10.1061/(ASCE)HY.1943-7900.0000026
  3. Publisher: 2009
  4. Abstract:
  5. Dense underflows are continuous currents that move downslope due to their density being heavier than that of the ambient water. In this work, a steady density current with a uniform velocity and concentration from a narrow sluice gate enters into a wide channel of lighter ambient fluid and moves forward downslope. Experiments varying inlet velocity and concentration and hence inlet Richardson numbers were conducted. Numerical simulations were also performed with a low-Reynolds number k-ε model. The results of numerical simulation agree well with the experimental data. © 2009 ASCE
  6. Keywords:
  7. Channel flow ; Density currents ; Three-dimensional models ; Ambient fluids ; Ambient waters ; Downslope ; Experimental datum ; Inlet velocities ; Low-Reynolds numbers ; Numerical models ; Numerical simulations ; Richardson numbers ; Sluice gates ; Straight channels ; Three-dimensional modeling ; Underflows ; Numerical methods ; Three dimensional ; Turbulence ; Wall flow ; Mathematical models ; Channel flow ; Channel hydraulics ; Computer simulation ; Density current ; Flow velocity ; Hydromechanics ; Numerical model ; Reynolds number ; Richardson number
  8. Source: Journal of Hydraulic Engineering ; Volume 135, Issue 5 , 2009 , Pages 393-402 ; 07339429 (ISSN)
  9. URL: https://ascelibrary.org/doi/10.1061/%28ASCE%29HY.1943-7900.0000026