Team Members

Jesse Prager
Yong Sheng Khoo

Motivation & Objective

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.

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.

Fall 2008 Research Proposals

• 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
• Model entire flocculator instead of single baffle turning
• Explore different geometric space and achieve optimal geometry
  
  

Spring 2008 Research Goals

• 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
• 2. Model flocculation tank and compare Simulation to Experimental results.*

Simulation

1. Results
2. Findings

Presentations

MidTerm Teach-in Presentation

Midterm evaluation

1. Team Contribution

Reports

CFD Spring 2008 Report