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New tools for facilitating the integration of models into teaching

New tools for facilitating the integration of models into teaching. David F. Boutt Umass-Amherst. Overview. Many aspects of the Geosciences now use physically-based models for research Incorporating these into classes is often problematic

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New tools for facilitating the integration of models into teaching

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  1. New tools for facilitating the integration of models into teaching David F. Boutt Umass-Amherst

  2. Overview • Many aspects of the Geosciences now use physically-based models for research • Incorporating these into classes is often problematic • Students could benefit from early exposure to these techniques • New tools and faster computers offers an oppurtunity for educators

  3. The Past

  4. The Present - Modeling Tools • A number of GUI-based flexible modeling environments are available • Real time simulation and visualization • Useful for Lecture and Laboratory • Two examples • COMSOL Multiphysics • Topodrive/particle flow

  5. COMSOL Multiphysics • A powerful generalized finite-element PDE solver with visualization • Specific Earth Science Modules • Ideal for exploring coupled processes • Fluid flow and deformation • Fluid flow and transport • Good for setting up a problem and allowing students to perform sensitivity analysis

  6. Topodrive/ParticleFlow • 2D Steady state groundwater flow with particle transport • Developed by Paul Hsieh, USGS • Java-based, web app • http://water.usgs.gov/nrp/gwsoftware/tdpf/tdpf.html • Example use …

  7. Normal stress on the system and the fractures. Permeability of fractures under lithostatic stress conditions. 210 m Hydraulic head where the permeability of fractures is constant. Hydraulic head where the permeability of fractures is function of stress 100 m

  8. Finite Element Model A mesh is applied to the 2D model space Gravitational Stress Plane Strain Displacement allowed Fracture is an internal boundary Fixed Boundary Recharge Darcian Flow Hydraulic Head No Flow Permeable Fracture

  9. The Future • Student-driven real time modeling environments? • 3D visualization?

  10. Rest Stop

  11. Rest Stop - Simulated Hydraulic Head (m)

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