CFD Flocculation Tank Simulation

Overview

Create a CFD simulation to predict velocity gradients and pressure losses for each baffle in the flocculation tank. Use results to optimize the design of the flocculation tank.

CFD Flocculation Tank Simulation goals and meeting minutes.

Research

Fall 2008 Research Topics

• Validate which turbulence model to use. K-e realizable or K-w SST
• Calculate G_theta and compare with the theoretical data
• Analyze how energy dissipation rate is affected by Reynolds number
• Flocculator with multiple baffles
• Flocculator with multiple baffles

Spring 2008 Research Topics

• Model and validate a simple 180 degree turn over two baffles:*
• Create fully second order accurate model
• Perform mesh sensitivity analysis (using coarse, medium and fine meshes)
• Model the baffles using alternate Turbulence models (K-e Standard, K-e Realizable, K-w)
• Analyze the effects of changing the baffle clearance height
• Understand and analyze the relationship between Strain Rate, Energy Dissipation and Kinematic Viscosity
• Create a flexible mesh that uses parametrization to easily change geometry dimensions
• Analyze the effect of the Reynolds Number on the results
• Analyze the sensitivity of the model to convergence residuals
• Model flocculation tank and compare Simulation to Experimental results.*
  

Spring 2008 Documentations:

Spring 2008 Results

Spring 2008 Minutes

Resources

• Johannes Haarhoff and Jeremia J. van der Walt , J Water SRT - Aqua 50 (2001) 149-160 - - Towards optimal design parameters for around-the-end hydraulic flocculators.
  
• CFD Flocculation Tank Simulation Research
• CFD Fall 2008 Midtem Report
• CFD Spring 2008 Midterm Teach-in Presentation
• CFD Spring 2008 Final Report
• CFD Fall 2008 Midterm Teach-in Presentation
• CFD Fall 2008 Midtem Report
• CFD Fall 2008 Final Report