수치최적화기법을 이용한 침전조의 형상최적설계

초록

A numerical procedure for optimizing the shape of three-dimensional sedimentation bed is presented to maximize its efficiency. The response surface based optimization is used as an optimization technique with Reynolds-averaged Navier-Stokes analysis for multi-phase flow. Standard k-εmodel is used as a turbulence closure. Three dimensionless variables such as, bed height to center feed wall diameter ratio, blockage ratio of center feed wall and angle of distributor are chosen as design variables. Sedimentation efficiency is defined as an objective function. Full-factorial method is used to determine the training points as a mean of design of experiment. Sensitivity of each design variable on the objective function has been evaluated. And, optimal values of the design variables have been obtained.