dica, hydraulic engineering division · flow and transport in porous media 4 pore-scale modeling of...
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2Staff
Francesco BallioPO
Diego BerziR
Silvio FranzettiPO
Alberto GuadagniniPO
Enrico LarcanPO
Stefano MalavasiPA
Stefano MambrettiPA
Enrico OrsiPO
Alessio RadiceR
Monica RivaPA
Alessio Radice
3Activities
• Groundwater
• Surface water
• Granular flows
I d t i l h d li• Industrial hydraulics
• Measurement and control
Alessio Radice
4Flow and transport in porous media
Pore-scale modeling of (multiphase) flow and transport problems within natural porous media. Transport is modeled from the pore to the field scale accounting for upscaling and transfer of information across scales. Theoretical developments for quantification of uncertainty propagation across observation y gscales.
Fate of reacting solutes and interactions with the host porous matrix in the presence of structural and geochemical medium heterogeneities.Multiscale laboratory data are integrated with original quantitative models that capture the dynamics of solute migration through porous media over multiple space-time scales.
well
Alessio Radice
5Media characterization
cLcl
Development of concepts and associated theoretical and computational tools to analyze, characterize andand computational tools to analyze, characterize and model the multi-scale stochastic nature of natural and reconstructed porous systems.
Geostatistics for characterization of reservoir and aquifer heterogeneity in terms of spatialand aquifer heterogeneity, in terms of spatial distribution of reservoir/aquifer hydrofaciesand parameters governing flow and transport processes.
K [m/s]
Alessio Radice
6Stochastic groundwater
PTOT
y [m]
Modelling uncertainty propagation across scales in subsurface systems with the aim of improving our ability to (a) transfer knowledge from one scale to another, and (b) asses propagation of uncertainty across scales within soilsasses propagation of uncertainty across scales within soils, alluvial aquifers, and geological formations.
Alessio Radice
7Well testing, enhanced oil recovery
To infer hydraulic parameters of aquifer systems and reservoirs
State-of-the art theoretical and computational tools are developed in the context of multiphase flows associated with EOR
Alessio Radice
8Fundamental analysis of sediment transport
Experimental analysis (at Fantoli lab) of the sediment transport process at small scale• Eulerian analysis of sediment kinematics• Interaction between turbulent boundary layer and sediment motion• Interaction between turbulent boundary layer and sediment motion
Alessio Radice
9Fundamental analysis of sediment transport
Experimental analysis (at Fantoli lab) of the sediment transport process at small scale• Lagrangian tracking of individual particles, characterization of trajectories• Models for particle diffusion/dispersion• Models for particle diffusion/dispersion
Alessio Radice
10Bridge scour, experimental analysis
8
9
10
Black-box, physical experimentsPredictive formulae
4
5
6
7
ds/a
1
2
3
4
Alessio Radice
01.E-03 1.E-02 1.E-01 1.E+00 1.E+01 1.E+02 1.E+03 1.E+04 1.E+05 1.E+06 1.E+07
t/t*
11Bridge safety, monitoring
Monitoring system on bridge (Po river at Borgoforte) measuring several parameters (waterelevation, bed level, wind speed, presence of debris) real-time assessment of bridge safetyfactor
Alessio Radice
12Bridge safety, protection against woody debris
Protection structure built on the Po river at Sermide
Alessio Radice
13Sediment transport in mountain basins
Sediment sources and yield (geology) Sediment transport in rivers (hydraulics)
1.E+07
1.E+08
1.E+05
1.E+06
[m3/
year
]
1.E+040 500 1000 1500
[m]
303
301
303
n (m
) water
299elev
atio
n
sediment
Alessio Radice
2970 50000 100000 150000 200000
time (s)
14Flood vulnerability and risk
PEACE TIMEFlood-IMPATPartner: AdB Po
Exposure modeling Vulnerability modeling Hazard modeling
Flood scenario (ex-ante) Physical scenario
Physical effects (flooded areas, water depth, landslides,
t )
EVENT
Flood scenario (ex-post)
Observed damage (direct/indirect, t ibl /i t ibl ) t d t
etc.)
tangible/intangible) to exposed sectorsImplemented (mitigation)
actions
Alessio Radice
EMERGENCY/RECOVERY Poli-RISPOSTA project (POLISOCIAL award)Partners: DEIB, DAStU, Regione Umbria
15Kinetic theory of granular flows
Civil engineeringAstrophysics
GRANULAR MATTER
Industry Bio-engineering
Alessio Radice
16Dry granular flows
V
Theory and numerical DEM simulations: Si l Sh d C tt Fl
δSimple Shear and Couette Flows
Theory: Inclined Flows over rigid and erodible beds
Experiments: partially filled Rotating Drum (Fantoli Lab)
Alessio Radice
17Wet granular flows
Theory : Debris flows and Collisional S di t T tSediment Transport
Theory: Granular fluid front propagationTheory: Granular-fluid front propagation over rigid and erodible beds
Experiments: Granular-fluid collapse (F t li L b)
Alessio Radice
(Fantoli Lab)
18Flow control
CFD modelling and experiments of two-phase flows, to improve regulation devices (valves, plates, orifices) reducing energy dissipation, noise and cavitation) g gy p
Alessio Radice
19Fluid-structure interaction
Experiments and numerical modelling of VIVExperiments and numerical modelling of VIV(Vortex-Induced Vibration)
F t l li d
Alessio Radice
Erosion due to solid particlestransported by water
Forces on rectangular cylinder(confined case)
20Renewable energy
Experiments on WEC at Fantoli Lab
Again VIV, with elastically mounted sphere
G l t t f th
Alessio Radice
Green valve to recover part of the energydissipated in flow control