CFD Flocculation Tank 3D Simulation Meeting Minutes

Fall 2008 Minutes

November 23, 2008

Accomplishments

  • Run two groups of simulations with single bend to investigate sensitivity to turbulence intensity and hydraulic radius:
  • 1st order with convergence criteria of e-6, turbulence intensity:10%, hydraulic radius: 0.004;
  • 1st order with convergence criteria of e-6, turbulence intensity:1%, hydraulic radius: 0.04
  • Analyzed the plots of residuals

Metric

  • NA

Outcomes

  • Concluded that convergence property and results were not sensitive to the two parameters above
  • The plots of residuals showed no observable high regional residual

Issues

  • 1st order solver didn't converge below e-4, fluctuation in the tails of the residual plots were also observed
  • Need to run simulation with more coarse mesh
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