A simulation model for settling tanks with varying cross-sectional area
Research output: Contribution to journal › Article
A quasi-one-dimensional model of the process of continuous sedimentation in clarifier-thickeners (settlers) with variable cross-sectional area is presented. The partial differential equation (PDE) model extends the settler model advanced by Bürger et al. (2013), which assumes a constant cross section. A reliable numerical method that handles the special features of the nonlinear PDE is presented along with an advantageous time-step condition for continuous and batch sedimentation under the condition of a variable cross-sectional area. Simulations of continuous sedimentation show the effect of change of cross-sectional area in the concentration inside the vessel and in the underflow. Simulations of batch settling in cones illustrate the versatility of the numerical scheme to include a vertex, where the area shrinks to zero.
|Research areas and keywords||
Subject classification (UKÄ) – MANDATORY
|Journal||Chemical Engineering Communications|
|Early online date||2017 Sep 5|
|Publication status||Published - 2017 Nov 2|