Numerical Flownets and Capture Zone Simulations

  • Speaker: Prof. John Molson (Université de Laval)
  • Location: University of Neuchâtel, rue Émile-Argand 11 (room A317)
  • Dates: 28 March, 2023, 9:00-16:15 (note the rescheduled date)
  • Cost
    • WES PhD School members: no fee.
    • UNINE Doctoral School in Life Sciences members: no fee
    • Others:
      • Academic participants: 100 CHF
      • Industry participants: email us.
      • Note: all external participants must email the PhD School Coordinator.
  • Registrationhttps://forms.gle/MVYbDKJwGoSRbUUb9



In this 1-day course, we will review and apply two numerical modelling approaches for simulating groundwater flow: first using the Flownet 2D model for generating numerical flownets, then applying the Heatflow/Smoker code to simulate capture zones for remediation of a contaminated industrial site. In each case, the basic theoretical development will be reviewed, then hands-on examples will be run. The Tecplot© graphics package will be used for visualization of results. Numerical codes can be kept for later research use or for completing further examples.


Part 1: Flownet

WES_Molson_image_1.jpgNumerically-simulated flownets are a relatively fast and simple way to visualize flow systems and to test conceptual models by providing coupled solutions of hydraulic heads and streamlines. Unlike particle-tracking, streamlines generated within a flownet provide a more accurate visual perspective of the flow distribution since volumetric fluxes are the same within each stream tube. While limited to steady-state and saturated 2D domains, the approach allows variable boundary conditions and material characteristics. In this part of the course we will simulate flownets for various scenarios of homogeneous, heterogeneous and anisotropic flow systems


Part 2: Capture zones

WES_Molson_image_2.jpgCapture zones define the source areas of groundwater which is extracted from pumping wells. They are commonly applied for protecting municipal water-supply wells and in the context of contaminant site remediation. Capture zones are most commonly delineated using particle tracking on a discrete velocity field simulated using a groundwater flow model. In this part of the course you will use the Heatflow/Smoker code to simulate groundwater flow and define capture zones of a group of pumping wells to prevent off-site migration of contaminated groundwater.