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Non-hydrostatic layered flows over a sill

Jamali, M ; Sharif University of Technology | 2013

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  1. Type of Document: Article
  2. DOI: 10.1088/0169-5983/45/2/025502
  3. Publisher: 2013
  4. Abstract:
  5. This work takes a new approach to solving non-hydrostatic equations of layered flows over bottom topography. A perturbation technique is used to find explicit expressions for a flow for different regimes of single- and two-layer flows over a sill. Excellent agreement with previous solutions and experimental data is obtained, and more details of the non-hydrostatic flow over a sill are revealed. The proposed method is simple and compact and removes the need for complex numerical techniques to solve the non-hydrostatic equations. It is shown that in the approach-controlled regime of two-layer flow over a sill, the flow upstream and farther downstream the sill crest can be described by the hydrostatic theory, and the flow is non-hydrostatic over only a short distance on the downstream side of the crest
  6. Keywords:
  7. Bottom topography ; Experimental datum ; New approaches ; Non-hydrostatic ; Non-hydrostatic equations ; Numerical techniques ; Two-layer flows ; Hydraulics ; Numerical methods ; Hydrodynamics
  8. Source: Fluid Dynamics Research ; Volume 45, Issue 2 , February , 2013 ; 01695983 (ISSN)
  9. URL: http://iopscience.iop.org/article/10.1088/0169-5983/45/2/025502/meta