Research Article Open Access

Numerical Simulation of 2_D Turbidity Currents and Wall Jet

M.H. Shojaeefard1, K. Goudarzi1 and H. Ghasvari Jahromi1
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American Journal of Applied Sciences
Volume 4 No. 11, 2007, 880-886

DOI: https://doi.org/10.3844/ajassp.2007.880.886

Submitted On: 26 December 2006 Published On: 30 November 2007

How to Cite: Shojaeefard, M., Goudarzi, K. & Jahromi, H. G. (2007). Numerical Simulation of 2_D Turbidity Currents and Wall Jet. American Journal of Applied Sciences, 4(11), 880-886. https://doi.org/10.3844/ajassp.2007.880.886

Abstract

Dense underflows are continuous currents, which move down the slope due to the fact that, their density are heavier than ambient water. In turbidity currents the density differences arises from suspended solids. Vicinity of the wall make density currents and wall jets similar in some sense but Variation of density cause this flows more complex than wall jets. An improved form of 'near-wall' k-ϵ turbulence model is chosen which preserve all characteristics of both density and wall jet currents and a compression is made between them. Then the outcomes from low Reynolds number k-ε model is compared with v2 - f model which show similarity. Also results show good agreement with experimental data.

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Keywords

  • Turbidity currents, wall jet
  • k-ε turbulence model
  • v2 - ƒ turbulence model