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Using Matlab-generated Numerical Solutions in an Environmental Engineering Class to Predict the Fate and Transport of Contaminants

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Conference

2017 ASEE Annual Conference & Exposition

Location

Columbus, Ohio

Publication Date

June 24, 2017

Start Date

June 24, 2017

End Date

June 28, 2017

Conference Session

Environmental Engineering Division Technical Session 1

Tagged Division

Environmental Engineering

Page Count

20

DOI

10.18260/1-2--29081

Permanent URL

https://peer.asee.org/29081

Download Count

1158

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Paper Authors

biography

Alexa Rihana-Abdallah University of Detroit Mercy

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Alexa Rihana-Abdallah is a professor of civil and environmental engineering at the University of Detroit Mercy, rihanaa@udmercy.edu

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biography

James Joseph Lynch University of Detroit Mercy

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Dr. Lynch is an Associate Professor in the Department of Civil, Architectural, and Environmental Engineering. He teaches classes in geotechnical engineering, construction materials, and forensic engineering. His research interests include nondestructive testing based on wave propagation methods. He is a licensed professional engineer in the State of Michigan. He is the advisor for the student chapter of the American Society of Civil Engineers and the concrete canoe team.

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Abstract

Contaminant transport and fate is an important topic in environmental engineering. Closed-form solutions exist for homogeneous domains; however actual contaminated sites are rarely homogeneous, which means that no-closed form solution exists. An alternative to closed-form solutions is a numerical solution through computer programs. Although commercially-available software packages have been written to model contaminant transport and fate, a student-written program is chosen in this work for pedagogical reasons. With contaminant transport being an application of the differential equations, students in the senior-level environmental engineering class, Hazardous Waste, were introduced to analytical and numerical solutions of the partial differential equations governing contaminant transport, and then they used Matlab to investigate and predict the contaminant behavior in time and space, by modeling the data available from the Environment Protection Agency (EPA) website of a contaminated site. Students worked in groups, for four weeks, to model the contaminant concentrations over time and distance. A survey at the end of the project and comments from the course evaluations indicate that the Matlab modeling exercise, although challenging, was well received. Students were able to predict the time when the concentration of the contaminant drops below the maximum allowable concentration in drinking water. They also were able to model the movement of the plume. When asked about the importance of learning a computer language, 92% stated that this skill and knowledge are very important and will help them in their job applications, 76% stated that modeling the plume helped them visualize its spread and predict its fate. For future offerings, more time will be provided for the project and time will be allocated in class to work on the project. In addition, sites with time-varying boundary conditions will be introduced, as well as student assessment prior and after completing the computer assignment.

Rihana-Abdallah, A., & Lynch, J. J. (2017, June), Using Matlab-generated Numerical Solutions in an Environmental Engineering Class to Predict the Fate and Transport of Contaminants Paper presented at 2017 ASEE Annual Conference & Exposition, Columbus, Ohio. 10.18260/1-2--29081

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