OPTIMIZATION OF SEDIMENTATION TANK BY CFD

Abstract

The aim of this study is to optimize the sedimentation tank with the application of CFD (computational fluid dynamics). In this study, we have used DPM i.e. discrete phase model for simulations and we assume multiphase solid and liquid. In multiphase simulation, we consider the momentum exchange between two phases. In this study, we simulate various contours and particle tracking by Lagrangian approach instead of Euler approach. Our focus is the difference in the results after applying a baffle wall in the sedimentation tank. Although there is a wide range of simulations in CFD but for simplicity, we assume the velocity inlet, particle diameter, dimensions of sedimentation tank and location of baffle is constant. For further investigation we can vary these parameters also but due to the limited power of a computer the simulations will be very complicated but in the simplify manner we can optimize the sedimentation tank in an easy way. Simulations are of two types 2D and 3D; in this study, we consider 3D flow, which is more complicated and better than 2D. There is less investigation available on lagrangian approach or DPM with double-coupled model but in our study, we use this approach and compare the results with or without a baffle wall.