| Autor: |
Valentin, Claire, Dochain, Denis, Jallut, Christian, Dos Santos Martins, Valérie, 21st IFAC World Congress |
| Přispěvatelé: |
UCL - SST/ICTM/INMA - Pôle en ingénierie mathématique |
| Jazyk: |
angličtina |
| Rok vydání: |
2020 |
| Zdroj: |
IFAC Workshop Series, Vol. 53, no. 2 |
| Popis: |
The representation of the main physical phenomena of continuous sedimentation within a settling tank (hydrodynamics of two-phase suspensions) is essential for the further design of a control of the quality of the solid-liquid separation. The model is still made of highly non-linear partial differential equations after simplifying assumptions on the behaviour of the solid and liquid flows and considering a one dimensional settler. Moreover effective solid stress appears when the solid particles concentration is above a given threshold which depends on the quality of the sludge. Then a mobile interface appears between two different behaviours. The settler is divided into two zones to represent this discrete phenomenon. Our goal is to develop a model that can be used for a further design of a control of the water quality at the top outlet of the settling tank. A hybrid state space representation is explained with the different dynamics in each of the two zones, the constitutive equations and the boundary conditions. The steady state profile is calculated. A simplified version of a settling tank model is simulated. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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