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Two-phase modeling of batch sedimentation |
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| Authors: | M. Latsa D. Assimacopoulos A. Stamou N. Markatos |
| Affiliation: | a Department of Chemical Engineering, National Technical University of Athens, 9 Heroon Polytechniou, Zografou University Campus, 157 80 Zografou, Athens, Greece b Department of Civil Engineering, National Technical University of Athens, 9 Heroon Polytechniou, Zografou University Campus, 157 80 Zografou, Athens, Greece |
| Abstract: | A two-phase model for the simulation of sedimentation processes is presented. The model solves the continuity and momentum equations for the pure-clear liquid and the sludge phases, and it is verified against a well-known benchmark problem, for which analytical solutions exist. Numerical simulations of a typical 1-D batch sedimentation process for mono-dispersed particles are carried out and results are found to be in satisfactory agreement with experimental data and model predictions of other researchers. A further expansion of the model to two-dimensions leads to predictions of the dynamic behavior of settling tanks and the effect of the inclination angle on the sedimentation process. |
| Keywords: | Two-phase flow Batch sedimentation Numerical modeling Inclined settlers |
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