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Title: Better Understanding of Flocculation Process through CFD Simulation
Abstract
Flocculation is a process where particles one of important process used by Aguaclara to treat water. The process involved particles collide in the solution collects and come together to form floc. The design of flocculation tank facilitates this process. Some basic knowledge about what causing this was used to design the flocculation tank. However, there is a need for a computational model to attest the current understanding of the process.
Introduction
We would like to find the strain rate and pressure drop over a flocculation tank. We start modeling the flocculation in just one 180 degree turning.
Results and Discussion
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This paper aims to present a methodology of using CFD to better understand the phenomena that take place in the flocculation tank. Better understanding of the flocculation process will enable the team to better design the water treatment system.
Introduction
Flocculation is direct process of particle collision. Past research has shown that fluid shear plays important role in causing the collision. Hence using CFD, the process in the flocculation tank is simulated. The ultimate result of this research is to find the strain rate in the flow that causes the shearing process which influencing the particle collision. The CFD tools that were used in the modeling process were Gambit and FLUENT. Gambit was used to create the geometry of the flocculation tank and FLUENT was used to plug in the data and initial conditions to obtain results.
Modeling Approach
The real life flocculation tank designed by Aguaclara involved a 180 deg turn over few dozens baffles. For validating result and modeling purpose, a simple 180 deg turn over two baffles was modeled. The used