2018/2019

2018/2019

DM270

ICAR/01 (HYDRAULICS)

DEPARTMENT OF CIVIL ENGINEERING AND ARCHITECTURE

CIVIL ENGINEERING FOR MITIGATION OF RISK FROM NATURAL HAZARDS

Hydrogeological risk assessment and mitigation

1°

1st semester (24/09/2018 - 17/10/2018)

6

51 lesson hours

English

WRITTEN AND ORAL TEST

MANENTI SAURO (titolare) - 6 ECTS

Basics of vector, matrix and tensor algebra.
Mathematical foundations.
Integral theorems (Stokes and Gauss).

To provide the foundamental theoretical concepts and mathematical tools for the analysis of relevant problems in the hydraulic engineering field.

Review of mathematical foundations: vector and tensor algebra; coordinate systems; Stokes theorem and Gauss theorem.

Analysis of stress: the continuum concept; Cauchy stress principle; stress tensor; principal stress; Mohr circles; deviator and spherical stress tensor.

Deformation and strain: Lagrangian and Eulerian descriprion; small deformation theory; strain tensor; principal strains; spherical and deviator strain tensor; plane strain; compatibility equations; velocity gradient tensor; rate of deformation tensor; vorticity tensor.

Foundamental laws of continuum mechanics: mass conservation - continuity equation; Reynolds transport theorem; linear momentum conservation; angular momentum conservation; energy conservation.

Constitutive equations: Newtonian fluid. Governing equations of fluid mechanics: Navier-Stokes equations.

Special cases: perfect fluid; Euler and Bernoulli equations. Laplace equation. Kelvin theorem.

Viscosity and applications to engineering problems: Viscosity of Newtonian fluids. Flow curve. Common non-Newtonian rheological models. Experimental measurement of fluid viscosity. Rheological characterization of sludge from Termophilic Aerated Membrane Reactor for wastewatertreatment. CFD modelling of passive energy dissipation system: the case of annular viscous fluid damper.

Numerical solution of the fundamental equations of fluid mechanics and engineering applications: basics of Smoothed Particle Hydrodynamics (SPH) method. Discretized governing equations. SPH modelling of landslide generated wave in artificial reservoir. Vawe impact against rigid body.

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R. Aris "Vectors, tensors, and the basic equations of fluid mechanics" Dover pub.

W. Prager "Introduction to mechanics of continua" Ginn and Co. 1961

P.C. Chou & N.J. Pagano "Elasticity, tensor, dyadic, and engineering approaches"
Dover pub.

Wilkinson W.L., Non-Newtonian fluids. 1960 Pergamon Press.

Liu, G-R. and Liu, M.B. Smoothed Particle Hydrodynamics: a meshfree particle method. World Scientic, 2003.

The final examination will consist of an essay on a course’s topic to be selected and discussed orally by the student.

Lecture notes can be downloaded from the course page on the platform KIRO (https://elearning2.unipv.it/ingegneria/)