AGRICULTURAL HYDRAULICS
Academic year and teacher
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- Versione italiana
- Academic year
- 2022/2023
- Teacher
- DIMITRA RAPTI
- Credits
- 6
- Didactic period
- Primo Semestre
- SSD
- AGR/08
Training objectives
- At the end of the course the student knows the fundamental notions and laws of hydraulics applied to irrigation and drainage systems for a correct management of water resources in agriculture. in particular, the student acquires knowledge relating to the properties of fluids, hydrostatics, the study of pressurized currents and free surface currents, surface hydrology and underground hydrodynamics.
Prerequisites
- The student who accesses this course must have a good basic preparation thanks to the fundamentals of mathematics and physics. These prerequisites are provided by the respective courses of the three-year bachelor degree.
Course programme
- 1. Hydraulics
- Physical properties of water (definition of liquid, measurement systems, density, specific weight, viscosity, cohesion, adhesion, surface tension)
- Hydrostatics (forces and pressures, Fundamental law of hydrostatics - Stevino's law, Pascal's principle, Archimedes' law)
-Hydrodynamics (Fluid kinematics, Eulerian and Lagrangian approaches, trajectories and flow lines, various, permanent and uniform motion, flow rate and average velocity. Continuity equation. Bernoulli equation. Graphical and energetic interpretation. Motion in pressurized pipelines: losses of distributed and localized load and tracing of the lines of the piezometric and total loads, long pipelines and inherent problems of verification and dimensioning. Free surface currents: constructive characterization of the channels, uniform motion, Chezy equation, Gauckler-Manning-Strickler equation , verification and sizing problems, flow rate scale)
2. Surface hydrology
- the hydrological cycle and its elements (precipitation, evapotranspiration, runoff and infiltration) and the equations of the hydrological / hydrogeological budget, hydrological / hydrogeological basin)
3. groundwater dynamics
- the hydrogeological properties of the media, aquifers and springs, the laws describing groundwater flow and the hydrodynamic behavior of porous media;
- hydrogeology of the vadose zone: suction, soil water retention curve, hydraulic conductivity and Darcy's law in the unsaturated zone; Didactic methods
- The course consists of theoretical lectures with some practical exercises on the topics covered.
Additionally, two highly formative field excursions and a laboratory will be proposed for the interested students. Learning assessment procedures
- The verification of the achievement of the educational objectives takes place through a written test containing questions on the topics covered. To pass the exam it is necessary to acquire a minimum score of 18 out of 30.
Reference texts
- Elementi di idraulica e idrologia per le scienze agrarie, ambientali e forestali. Vito Ferro. McGraw-Hill, 2014
