Pparameters analysis in 2D - simulation experiments

Objectives and Hypothesis

Based on our understanding of flocculation model, we use Pi-cell, G-theta and epsilon-theta as important design parameters that characterize the performance of hydraulic flocculation tanks. By comparing the performance parameters that derived from or assumed according physical understanding or intuition with the values that are calculated from the discrete numerical solutions from CFD simulation, we want to verify the validity of the flocculation model and draw more insights of how to design hydraulic flocculators.

Methods and Procedures

preliminary simulation experiments

• To investigate the appropriate boundary condition settings and the convergence level

Simulations with various h over b ratios
According to the results of the preliminary simulation experiments, the simulation are design in following ways:

• Mesh generation
  • The mesh files for various h over b ratios are generated using the journal file
• Define the problem in FLUENT
  • Click here for a report summary of all parameters of FLUENT model
• Formulations of the performance parameters

  • Click null for a summary of the derivation and formulation of the performance parameters

Results and Discussion

Click here for a summary of the calculated parameters