B4865 - MODELLAZIONE DELLE ACQUE SOTTERRANEE

Learning outcomes

By the end of the course, students will gain an understanding of the following: the main hydrogeological analytical models to process data obtained from hydrodynamic tests conducted in the field (such as pumping tests and slug tests), and for the interpretation of spring hydrographs; the principles of numerical modeling of flow and transport using finite difference methods; the notions of conceptual modeling, numerical model implementation, parameterization, calibration, and validation. The student will develop the skills to: employ analytical models for deducing essential hydrogeological parameters from field data (such as transmissivity, storage parameters, spring discharge, recession coefficients); implement numerical models grounded in hydrogeological conceptual frameworks; utilize numerical simulations to address inquiries concerning the flow and transport of contaminants in aquifers, with a focus on sustainable resource management in view of climate changes and the assessment of risks associated with groundwater contamination; assess the significance of the modeling outcomes in relation to the specific attributes of the model.

Course contents

Introduction to hydrogeological modeling: types of models with a focus on matematical models such as the governing equations for groundwater flow and solute transport in aquifers. Overview of the numerical solution of differential equations using finite difference methods. Phases of implementing a numerical hydrogeological model: discretization of the modeling domain, definition of initial and boundary conditions, assignment of parameters and stresses, calibration, critical evaluation of the model outputs, uncertainty assessment. Practical exercises in numerical hydrogeological modeling using the MODFLOW, MODPATH, and MT3DMS codes and the Groundwater Vistas graphical interface: steady-state and transient flow models; transport models; manual and automatic calibration; sensitivity analysis.

Readings/Bibliography

Teaching slides.

ANDERSON M. P., WOESSNER W.W., RANDALL J.H. (2015) – Applied groundwater modelling: simulation of flow and advective transport - Academic Press

BEAR J., CHENG A. D. H. (2010) - Theory and application of transport in porous media - Springer

Teaching methods

Frontal classes and hands-on computer exercises with specialized software.

Students with learning disorders and\or temporary or permanent disabilities: please, contact the office responsible (https://site.unibo.it/ studenti-con-disabilita-e-dsa/ en/for-students [https://site.unibo.it/studenti-con-disabilita-e-dsa/en/for-students] ) as soon as possible so that they can propose acceptable adjustments. The request for adaptation must be submitted in advance (15 days before the exam date) to the lecturer, who will assess the appropriateness of the adjustments, taking into account the teaching objectives.

Assessment methods

The final exam is divided into two parts:

1) A multiple-choice test covering topics discussed during lectures and practical exercises.

2) Development of a numerical hydrogeological model in class, based on a conceptual model provided in the form of a descriptive text.

Each part is graded on a scale of 30 points, and the final grade is the arithmetic mean of the two parts.

Teaching tools

Video projector, whiteboard, students' laptops for classroom exercises using dedicated freeware software.

Office hours

See the website of Maria Filippini