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Effects of a sill on selective withdrawal through a point sink in a linearly stratified fluid

Jamali, M ; Sharif University of Technology

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  1. Type of Document: Article
  2. DOI: 10.1016/j.advwatres.2010.08.009
  3. Abstract:
  4. Reservoir topography has significant effects on mechanism of selective withdrawal. We study selective withdrawal of a linearly stratified fluid through a point sink in a long rectangular reservoir with a sill at the bed experimentally and analytically. Experiments were conducted for various flow rates and sill heights to evaluate their effects on withdrawal layer in the inertial-buoyancy regime. Transition to the steady state is discussed in terms of dynamics of shear waves over the sill. The results show that in presence of a sill the withdrawal layer is thicker and higher in elevation. For flows controlled at the sill crest, the withdrawal layer thickness in the point-sink flow is almost equal to that in the similar line-sink flow. We propose an analytical relation for the withdrawal layer thickness in presence of a sill and confirm it by experiments
  5. Keywords:
  6. PIV ; Reservoir ; Topographic effect ; Selective withdrawal ; Stratified flows ; Topographic effects ; Aerodynamics ; Fluid dynamics ; Hydrodynamics ; Thermal stratification ; Experiments ; Sill ; Stratified flow
  7. Source: Advances in Water Resources ; Volume 33, Issue 12 , 2010 , Pages 1517-1523 ; 03091708 (ISSN)
  8. URL: http://www.sciencedirect.com/science/article/pii/S0309170810001533