Numerical simulation of scour by a free falling jet

Autor:	Ronald M. Barron, A.A. Salehi Neyshabouri, A.M. Ferreira Da Suva
Rok vydání:	2003
Předmět:	Jet (fluid) Finite volume method Computer simulation Turbulence Mechanics Physics::Fluid Dynamics Flow (mathematics) Continuity equation Pressure-correction method Geotechnical engineering Boundary value problem Geology Water Science and Technology Civil and Structural Engineering
Zdroj:	Journal of Hydraulic Research. 41:533-539
ISSN:	1814-2079 0022-1686
DOI:	10.1080/00221680309499998
Popis:	In this paper the numerical simulation of scour by a free falling jet is presented. It is assumed that the flow is two-dimensional, the alluvium is cohesionless, and that at the beginning of a run, i.e. at t = 0, the movable bed is flat. The scour simulation involves three basic steps: simulation of a turbulent flow in the stilling basin of a free falling jet, determination of distribution of sand concentration, and computation of bed deformation. The flow simulation rests on the momentum equations, the continuity equation, and on the k-∊ equations for turbulent flows. A general 2-D non-orthogonal curvilinear computational domain is used; the solution is by the finite volume method, with a non-staggered grid arrangement. The SIMPLE scheme is used for pressure correction and the checkerboard problem is solved with a momentum interpolation scheme. The distribution of sand concentration is determined on the basis of the convection-diffusion equation. An appropriate boundary condition for concentration at the...
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::a13b774629b678a2daf85936101d3a2b https://doi.org/10.1080/00221680309499998 Zobrazit plný text záznamu