Matteo Postacchini

Matteo Postacchini
Università Politecnica delle Marche | Università degli Studi di Ancona · Department of Construction, Civil Engineering and Architecture (DICEA)

PhD

About

71
Publications
10,271
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673
Citations
Introduction
My research activity focuses on the fields of the coastal and fluvial hydraulics, urban floods, hydropower generation. My preferred research topics are: numerical modeling of the coastal zone; sandbar dynamics; sea-river interactions at microtidal estuary; modeling and experiments on urban floods and flood impact on human bodies and buildings; hydropower generation in water supply systems.
Additional affiliations
November 2016 - present
Università Politecnica delle Marche
Position
  • Professor (Assistant)
April 2011 - October 2016
Università Politecnica delle Marche
Position
  • PostDoc Position

Publications

Publications (71)
Article
A novel approach is investigated, based on an integrated solution aiming at exploiting the energy harvestable from both drinking water reaching a municipality (or district) and wastewater flowing out from households. Global costs are also analyzed under several macroeconomic scenarios. A first experimental set was carried out using a supply system,...
Article
Full-text available
Tsunamis in the Mediterranean Sea have been increasingly investigated recently due to past destructive events. We present a novel operational approach for evaluating tsunami‐induced inundation, based on a generalization of Green's law and a chain of intermediate and small‐scale simulations. At the intermediate level, simulations with a linear solve...
Article
The present work describes the vortex–vortex interactions observed during laboratory experiments, where a single regular water wave is allowed to travel over a discontinuous rigid bed promoting the generation of both near-bed and surface vortices. While near-bed vortices are generated by the flow separation occurring at the bed discontinuity, surfa...
Conference Paper
Full-text available
Climate change is increasing the number of extreme events, like floods or long-lasting rainfalls, in densely inhabited area, this focusing the attention on the safety of human being in flooded urban areas. The stability of people subjected to floodwaters is an important aspect to evaluate people’s safety. To this aim, many theoretical and experimen...
Conference Paper
Full-text available
The estuary of the Misa River, located in Senigallia (central Italy), is a micro-tidal environment typical of the Adriatic basin. The present work focuses on the numerical modeling of the tidal action along the final stretch of the river, also in relation to the role of local river bedforms, and builds on field data obtained from: two hydrometers r...
Chapter
Full-text available
Microtidal river mouths are dynamic environments that evolve as a consequence of many forcing actions. Under the hydrodynamic viewpoint, river currents, sea waves and tides strongly interact, and their interplay determines specific sediment transport and morphological patterns. Beyond literature evidence, information comes from field observations m...
Article
Climate-change induced disasters, like floods, are expected to increase in the future. In outdoor built environments, flood risk to evacuees depends on interactions between floodwater spreading, built environment features, flood-induced modifications, and individuals’ reaction in emergency phases. Disaster risk reduction strategies should mitigate...
Article
Full-text available
In shallow alluvial aquifers characterized by coarse sediments, the evapotranspiration rates from groundwater are often not accounted for due to their low capillarity. Nevertheless, this assumption can lead to errors in the hydrogeological balance estimation. To quantify such impacts, a numerical flow model using MODFLOW was set up for the Tronto r...
Article
Urban floods are becoming more and more intense and frequent allover the world. Extreme events are the main triggering factors of such floods, and merit attention for what concerns the urban planning and emergency strategies. Numerical models aimed at investigating the optimal paths for evacuees escaping a flooded urban environment may be used by l...
Article
Full-text available
Coastal area constitutes a vulnerable environment and requires special attention to preserve ecosystems and human activities therein. To this aim, many studies have been devoted both in past and recent years to analyzing the main factors affecting coastal vulnerability and susceptibility. Among the most used approaches, the Coastal Vulnerability In...
Conference Paper
Full-text available
We illustrate recent findings on the upriver propagation of long waves entering the mouth of the Misa River (Senigallia, Italy). Such a microtidal environment has been recently studied to understand river-sea interactions: it has been found that the river forcing dominates over the marine actions in winter, especially during storms. However, uprive...
Article
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The occurrence and the effects of hydraulic jump instabilities on a natural river confluence in a small river basin in Liguria (Italy) is here investigated. Hydraulic jump instability has been extensively studied in controlled and simplified laboratory rectangular flumes. In the present study, a scaled physical model of the Chiaravagna River and Ru...
Article
Full-text available
Novel observations of bar features and migration patterns at three Italian sandy beaches in Senigallia (central Adriatic Sea) and Terracina (central Tyrrhenian Sea) are presented. While two of these beaches are unprotected, one is artificially embayed through the presence of a concrete jetty. Bar locations and motions are analyzed with video imager...
Article
Full-text available
Pump-As-Turbine (PAT) technology is a smart solution to produce energy in a sustainable way at small scale, e.g., through its exploitation in classical Water Distribution Networks (WDNs). PAT application may actually represent a suitable solution to obtain both pressure regulation and electrical energy production. This technology enables one to sig...
Preprint
Full-text available
Pump-As-Turbine (PAT) technology is a smart solution to produce energy in a sustainable 1 way at small scale, e.g. through its exploitation in classical Water Distribution Networks (WDNs). 2 PAT application may actually represent a suitable solution to obtain both pressure regulation and 3 electrical energy production. This technology enables one t...
Article
Full-text available
The evolution of different wave components as they propagate within a microtidal inlet during a storm occurring from 24 to 26 January 2014 is analyzed, in order to improve knowledge on how microtidal river mouths typical of the Adriatic Sea behave. For the first time, the "low-pass filter" mechanism previously ascertained at several macrotidal oce...
Chapter
We discuss the research that is being carried out at the Department of Civil and Building Engineering and Architecture (Dipartimento di Ingegneria Civile, Edile e Architettura, DICEA) of the Università Politecnica delle Marche (UNIVPM). Over the years the DICEA has steadily focused its attention on resilient environments and buildings, making a gro...
Chapter
We discuss the contribution of the research groups that work at UNIVPM in the field of infrastructure engineering to the design of resilient hydraulic and transportation infrastructures and related solutions for the protection of the environment. After recalling the long history of research and engineering intervention of the groups of Hydraulics a...
Article
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The coastal zone hosts many human activities and interests, which have significantly increased inthe last few decades [...]
Article
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The original Green’s relationship provides the amplitude of a long wave at a given water depth as a function of the amplitude in deeper waters, accounting for the wave shoaling, taken as a one-dimensional process, and neglecting both diffraction and refraction effects. An analytical application of Green’s law can only be made in case of simple bath...
Article
Full-text available
The skills of the Normalized Scalar Product (NSP) strategy, commonly used to estimate the wave field, as well as bathymetry and sea-surface current, from X-band radar images, are investigated with the aim to better understand coastal inundation during extreme events. Numerical simulations performed using a Nonlinear Shallow-Water Equations (NSWE) s...
Conference Paper
The aim of this work is to investigate the use of the Pump as Turbine (PAT) technology to produce energy in a sustainable way, at a relatively small scale. PATs represent a smart solution which enables to obtain pressure regulation and electrical energy production, significantly reducing both design and maintenance costs if compared to traditional...
Article
Climate change and the raising number of extreme events, such as severe floods, has increased the attention on their effects on urban systems. Urban floods generate important hydrodynamic loads on building and this work proposes a first systematic study on the actions generated by floods with different characteristics (depth, velocity and incidence...
Article
Coastal inundation is an important threat for many nearshore regions worldwide, and has significantly increased in the last years also due to sea-level rise and augmented impact of extreme events, like sea storms. Many countries and regions have recently invested to overcome such problems, which commonly lead to structure damages, beach erosion and...
Chapter
In the future, safety in historical city centers will be significantly affected by climate change-related disasters, such as floods. Risk assessment in these scenarios requires the combination of a series of factors: possible events characterization; urban layout configuration, its influence on flooding spreading and induced environmental modificat...
Conference Paper
Full-text available
This paper presents the COPEMAP project, fruit of a research collaboration between the Università Politecnica delle Marche and the Istituto Superiore per la Protezione e la Ricerca Ambientale. The project focuses on developing a methodology for the assessment of beach resilience as a function of both natural forcing (e.g. incoming wave fields) and...
Conference Paper
KEY POINTS • Human behaviors in flood emergency affect individuals' safety levels in urban scenarios. • Evacuation simulators are needed to fully perform risk assessment and risk-reduction solutions evaluations. • Volunteers are engaged in laboratory experiments to propose floodwaters-evacuation motion relations. • A mannequin (representing an adul...
Conference Paper
Full-text available
Il D. L. 23/2/2010 n. 49, "Attuazione della direttiva 2007/60/CE relativa alla valutazione e alla gestione dei rischi di alluvioni", ha introdotto i criteri atti a mitigare l'impatto degli eventi alluvionali sulla salute umana, l'ambiente, il patrimonio culturale e le attività economiche. In questo lavoro sono descritte le attività svolte nell'ambi...
Conference Paper
Full-text available
Recent studies have shown that wave blocking occurs at river mouths with strong currents typically preventing relatively short period sea and swell waves from propagating up the river. However, observations demonstrate that lower frequency waves, so-called infragravity waves, do pass through and propagate up the river, particularly during storm eve...
Article
Full-text available
Numerical experiments of wave-current interaction have been performed to investigate the evolution and dissipation of horizontal large-scale vortical structures generated by differential wave breaking and current shearing at river mouths. Specific focus is on the role played by turbulence of scales smaller than the water depth and by seabed frictio...
Article
This paper investigates the capability of X-band radar systems to estimate nearshore bathymetry fields by considering both simulated and measured radar data. For the first time, a sensitivity analysis is performed to evaluate how sea-state conditions affect bathymetric estimates. For this purpose, sea wave fields generated by means of a numerical m...
Article
Flood risk assessment in urban regions does not account for human behaviours during emergency. Understanding behaviours during floods and developing related simulators highlight critical phenomena for individuals' safety, during and after the flood, and suggest risk-reduction strategies aimed at helping evacuees. The proposed Flooding Pedestrians'...
Article
Full-text available
In recent years, attention has been paid to beach protection by means of soft and hard defenses. Along the Italian coast of the Adriatic Sea, sandy beaches are the most common landscape feature and around 70 % of the Marche region's coast (central Adriatic) is protected by defense structures. The longest free-from-obstacle nearshore area in the reg...
Article
Full-text available
We study the behaviour of a low-density granular material entering a water basin by means of a simplified two-dimensional model, with the aim to understand the dynamics of a snow avalanche impacting a water basin like an alpine lake or a fjord. The low density of the impacting mass induces an uplift buoyancy force and, consequently, a complicated i...
Article
The Misa River on the Italian Adriatic coast, is typical of the rivers that drain the Apennine Mountain range. The focus of this study, conducted in the late summer of 2013 and mid-winter of 2014, was to contrast the general wintertime-summertime dynamics in the Misa River estuarine system rather than investigate specific dynamical features (e.g. o...
Article
Full-text available
In the recent years, attention has been paid to beach protection by means of soft and hard defenses. Along the Italian coasts of the Adriatic Sea, sandy beaches are the most common landscapes and around 70 % of the Marche-Region coasts (central Adriatic), is protected by defense structures. The longest free-from-obstacle nearshore area in the regio...
Article
When a snow avalanche enters a body of water, it creates an impulse wave whose effects may be catastrophic. Assessing the risk posed by such events requires estimates of the wave's features. Empirical equations have been developed for this purpose in the context of landslides and rock avalanches. Despite the density difference between snow and rock...
Conference Paper
The number of anthropized reservoirs threatened by snow avalanches is steadily increasing and impulse waves caused by avalanche impact are becoming a considerable risk for such basins. The dynamics of the impact of a snow avalanche into a water body is studied through laboratory experiments, where a granular material, with solid density slightly lo...
Article
Full-text available
Coastal areas host a large fraction of the world’s population and are exposed to natural extreme events, which are a serious threat to human life, as well as to economies. For this reason, sea storms are increasingly the object of studies, and the design of traditional coastal defenses is being carried out in conjunction with modeling analyses. Rel...
Article
Full-text available
A campaign of experimental tests on a 2D movable-bed physical model, reproducing an Italian beach on the Adriatic Sea, has been performed in the wave flume of the “Laboratorio di Idraulica e Costruzioni Marittime” of the Università Politecnica delle Marche (Ancona, Italy), with the aim to assess the fundamental features of various breakwater config...
Article
As part of the Estuarine Cohesive Sediments (EsCoSed) project, a field experiment was performed in a highly engineered environment, acting as a natural laboratory, to study the physico-chemical properties of estuarine sediments and the associated hydro-morphodynamics during different seasons. The present contribution focuses on the results obtained...
Article
Full-text available
In the recent years attention has been paid to the beach protection by means of soft and hard defenses. Along the Italian coasts of the Adriatic Sea, sandy beaches are the most common landscapes and around 70 % of the Marche-Region coasts (central Adriatic), is protected by defense structures. The longest free-from-obstacle nearshore area in the Re...
Article
We here study the scouring processes that evolve around a submarine pipeline placed on a weakly cohesive seabed. We first analyze some laboratory tests carried out by Vijaya Kumar et al. [21], Xu et al. [25] and Zhou et al. [28] that focused on the scouring around a horizontal cylinder lying on a cohesive bed, subject to waves and currents. The spe...
Conference Paper
At present the processes occurring in the Swash Zone (SZ) are disregarded by all available wave-averaged nearshore circulation models. Only recently a series of studies has proposed an approach to solve this problem by means of Shoreline Boundary Conditions (SBCs) obtained from integrating the Nonlinear Shallow Water Equations over the SZ width. Wh...
Article
This paper describes the whole-wavelength, highly resolved velocity field statistics in an oscillatory boundary layer driven by gravity waves, evolving on both impermeable and permeable beds. Velocity data from PTV measurements are acquired in a small window and then extended to the whole wavelength by means of a new phase-locked slotting technique...
Article
Full-text available
The working principle and the capabilities of a new platform called the River Drifter are here presented. This technology has applications in the study of the hydrodynamics of coastal areas, rivers, and lakes. The River Drifter was designed for shallow water applications (1 m and deeper) to collect concurrent measurements of surface currents, three...
Article
Full-text available
In recent years, the number of water reservoirs in high-altitude areas has increased. They are often used to provide water for various activities related with recreational (i.e. skiing) and production activities. Many of such reservoirs are threatened by snow avalanches. To investigate the phenomenon, an experimental study was carried out at the Ec...
Article
We study the dynamics of the oscillatory Bottom Boundary Layer (BBL) that develops at a porous bed under the action of propagating water waves (also known as “ventilated BBL”). In particular, experimental tests of a ventilated BBL generated over a permeable bed made of regular plastic spheres are analysed. With the purpose of characterizing typical...
Conference Paper
Cohesive sediments play an important role in the riverine and estuarine environments, since they reduce the capacity of predicting both sediment transport and bed morphology. Particles like flocs are typical of such muddy environments. They are generated by the combination of multiple materials like clay minerals, colloidal metals and biopolymers....
Article
The presentwork analyzes the hydro-morphodynamics characterizing the swash region during the uprush stage. A comparison is illustrated between the sediment transport measured in a series of dam-break experiments and that predicted by the numerical hydro-morphodynamic model of Postacchini et al. (2012). The primary aimis to investigate the differenc...
Article
The paper gives an overall description of the breaking-wave celerity on the basis of a wave-by-wave analysis that has been performed by using field data collected during the ECORS Project (Truc Vert Beach, France, 2008). Data coming from two pressure sensors have been analyzed with the aim to correlate, after a zero-crossing analysis, each wave of...
Article
Full-text available
Similarly to shore-parallel waves interacting with submerged obstacles, two wave trains, approaching the shore with different angles, generate breakers of finite cross-flow length and an intense vorticity at their edges. The dynamics of crossing wave trains in shallow waters is studied by means of a simple theoretical approach that is used to inspe...
Article
In the last few years, sea storms appear to be more and more important in the economy of coastal areas, strongly affecting the maintenance of recreational/tourist facilities, especially if they occur during the summer. The design of traditional coastal defense structures is crucial in the protection of such facilities. For this reason, some suitabl...
Conference Paper
Full-text available
A series of experimental tests on a 2D movable-bed physical model of the protected sandy beach of Gabicce Mare, on the central Adriatic Sea in Italy, is described. Three emerged and three submerged configurations of rubble-mound detached breakwaters, for beach protection, placed at different positions, were tested in the Ancona (Italy) wave flume a...
Conference Paper
Wave breaking over submerged topographic obstacles leads to vorticity generation and, at times, to the generation of strong offshore-directed rip currents. The generation of finite-length breakers may also be induced by the positive interaction of wave trains propagating to shore with a relative angle. Such an interaction gives rise to a short-cres...
Conference Paper
Full-text available
A series of experimental tests on a 2D movable-bed physical model of the protected sandy beach of Gabicce Mare, on the central Adriatic Sea in Italy, is described. Three emerged and three submerged configurations of rubble-mound detached breakwaters, for beach protection, placed at different positions, were tested in the Ancona (Italy) wave flume a...
Conference Paper
A weakly-coupled numerical model for the prediction of both nearshore flows and seabed changes forced by waves and currents is here presented. The model is built on a robust module that solves the Nonlinear Shallow Water Equations (NSWE) and a flexible module for the resolution of the mass-conservation Exner Equation (EE). The coupling issue concer...
Article
A hydro-morphodynamic numerical model is illustrated as a novel contribution to the investigation and prediction of nearshore and riverine flows and seabed changes forced by waves and currents. The model includes a robust hydrodynamic solver for the integration of the nonlinear shallow water equations (NSWE) and a rather flexible solver for the res...
Conference Paper
hydro-morphodynamic numerical solver, built by weakly coupling the Exner equation with the quasi-hyperbolic system of the Nonlinear ShallowWater Equations (NSWE), is used to study the hydro-morphodynamics of a compound channel. The vorticity occurring in a long and uniform compound channel is here investigated when different geometrical characteris...
Article
A comparative analysis is performed on the wave energy dissipation efficiency on various coastal protection devices. In-house experimental data on the performance of two innovative coastal defence methods and of traditional submerged breakwaters have been used. The analysis provides a quantitative comparison of the efficiency of wave dissipators ba...