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Idraulica Ambientale
Environmental Hydraulics
Maurizio Brocchini

Seat Ingegneria
A.A. 2015/2016
Credits 9
Hours 72
Period I
Language ENG

Prerequisites
Knowledge of the basics of Mathematical Analysis, Physics and Hydraulics

Learning outcomes
The course aims at providing the students with the theoretical and applicative fundamentals of the mixing processes that occur into a fluid environment"

Program
Definitions. The Fick law. The molecular diffusion in a quiescent fluid. The ”method of images”. The diffusion-convection in a fluid in laminar flow motion. Fundamentals of turbiulent flows. The turbulent diffusion: the clouds of tracers. The ”Taylor's theory” on turbulent diffusion. The equation for convetcion and turbulent diffusion. The laminar dispersion: ”Taylor's theory” and ”Elder's theory”. The free turbulence. The self-similar solution for the jet case. Entarinment, mixing and mass transport. Denso-mechanic phenomena: the bouyant jets and the plumes. The mixing in natural streams: the near, intermediate and far fields. The mixing in groundwater flows for both uniform and non-uniform terrains. Evaluation of feasible and reliable forecasting models for the evaluation of pollutants dispersion. The mixing of reactive tracers. The oxygen balance in absence of mixing. The re-oxygenation process. The oxygen balance in presence of mixing. Mixing processes in groundwater flows. Physical properties of soils. The Darcy Law. The transport of solutes in heterogeneous aquifers.

Development of the examination
LEARNING EVALUATION METHODS
Oral test and numerical project on the solution of the convection-diffusion equation.

LEARNING EVALUATION CRITERIA
To positively pass the exam, the student has to demonstrate, through the above-mentioned tests, to be well acquainted with both theoretical concepts and use of the applicative tools of the Environmental Hydraulics.

LEARNING MEASUREMENT CRITERIA
Final mark, in thirtieths.

FINAL MARK ALLOCATION CRITERIA
The final mark will be made by summing the marks of the oral tests and of thel numerical project. The student will obtain max 5 marks for the numerical project. The oral test consists of three questions. Each question will be marked between 0 and 10 points. Honours will be given to those students who, reaching the highest marks, demonstrate a full mastery of the topics.

Recommended reading
Fischer, H.B. et al., Mixing in inland and coastal waters, Academic Press

Courses

• Ingegneria Civile (Corso di Laurea Magistrale (DM 270/04))