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FIELD TRIALS OF CHAOTIC ADVECTION TO ENHANCE REAGENT DELIVERY
Cho, M.S., F. Solano, N.R. Thomson, M.G. Trefry, D.R. Lester, and G. Metcalfe.
Groundwater Monitoring and Remediation [Published online 23 May 2019 prior to print]

of a circular array of wells followed by either mixing using an engineered RPM flow system to invoke chaotic advection, or by natural processes as the control. Pressure fluctuations from the mixing tests using the RPM flow system suggested that the target hydraulic behaviors were achieved with the time-dependent flow field. The tracer breakthrough responses showed that the desired RPM flow was generated. Results from several quantitative metrics adopted to demonstrate field-scale evidence of chaotic advection showed that mixing led to improved lateral tracer spreading and close to uniform concentrations across the monitoring network. The multiple lines of evidence assembled in this proof-of-concept study conclusively demonstrated that chaotic advection can be engineered at field scale.



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