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Numerical Simulations of Distribution and Sediment Transmission in Pre Settled Pools Using Finite Volume Method and Comparison with Experimental Results Original Article, D44 Borna MR, Janfeshan Araqi H, Merufinia E, Asnaashari A. J. Civil Eng. Urban. 4(3): 287-292. 2014 ABSTRACT: Pre settled pools were most important elements in water purification process. Because of enormous cost of making these pools which have been allocated about 30% of the total cost to water purification process Modeling and optimal performance of Pre settled pools is very important. In pre settled tools due to different gradients of, secondary flow and rotational have been changed. These phenomena are caused to create short paths, increasing resident zones and dead flows and changes in the levels of flow which preventing laminar flow conditions in order to reduce efficiency of pools. The first step is to optimize Pre settled pools, correct calculation of the velocity and volume of the rotating parts. In this study, the numerical simulation of flow in a rectangular pool is studied and continuity and Stokes equations were solved using finite volume method. Flow simulations in three dimensional model using of turbulence k-ε standard and velocity profiles at different sections of the pool have been compared and there was good agreement. Afterwards, in order to evaluate style of sedimentation in pre settled pool, diffusion and transfer of sediment concentration was solved simultaneously by hydraulic flow equations and finally results of vertical distribution of sediment profiles have been compared by laboratory result of other researcher which shows good adaptation of numerical results and laboratory results as well as capacity of this model to predict distribution of sediment profiles in pre settled pools. Keywords: Pre Settled Pools, Profile of Flow Velocity, Distribution of Sediment Concentration منبع: [Hidden Content] دانلود: [Hidden Content].,%204%20(3)%20287-292,%202014.pdf J. Civil Eng. Urban., 4 (3) 287-292, 2014.pdf