Mohammad Rasoul Rajaei - Msc of marine structures - hormozgan university
Farshid Shahsavanpoor - Msc of marine structures - hormozgan university
Cyrus Ershadi - Associed Profssor, Department of Civil Engineering - Facaulty of Tchnology and Engineering of Hormozgan

Accurate solutions to current and prediction local scour around pier requires details understanding of current pattern around peirs. the governing equations of the current can solve with perfect vision of current, This current field become fully modeled. The exact method for estimation local scour around these structures can obtain with associted sediment transport equtations, and relying on dramatical advances of (CFD). In this research development of thescour process around piles group with different layout satudy by using of fluent numerical model that solve navier_stokes three_dimensional equations for current in assocation with turbulence model k_ ε Finite velume method was used for discreteness this equations and fluidvelume model was used for modeling of free level. Change in bed was obtained for solving contituity equation cells near the bed. Scour around piles group can be modeled by taking transported current condition and solving stimultaneously current and deposition calculation.[1]

local scour,Computational fluid dynamics,Numerical model,Finite volume method,Pile group