1,721,140 research outputs found
SENSITIVITY ANALYSIS OF DIFFERENT FINITE-VOLUME NUMERICAL SCHEMES TO A VARIATION IN THE CELERITY ESTIMATE FOR THE SIMULATION OF DAM-BREAK FLOWS
No full text
Closure to “Pollution source identification of accidental contamination in water distribution networks”
No full textSosta innanzi a Leopardi
No full textSosta innanzi a Leopardi / Mario Venditti. - Lanciano : G. Carabba, stampa 1934
Dedica manoscritta dell\u27autore: a Emilio Bodrero, / con devozione di discepolo / e fedeltà di gregario / M. Venditti / (Napoli: agosto XII)
https://galileodiscovery.unipd.it/discovery/fulldisplay?context=L&vid=39UPD_INST:VU1&search_scope=MyInst_and_CI&tab=Everything&docid=alma99001180170020604
La lirica. Dalle origini a Leopardi
No full textUna storia della lingua italiana studiata nell'ambito del genere lirico, dalle origini a Leopardi, corredata da una seconda parte antologica contenente una scelta di testi lirici rappresentativi, commentati dal punto di vista linguistico e stilistico
Two-phase modelling of total sediment load in fast geomorphictransients
No full textSediment transport may occur during fast geomorphic transients as a consequence of strong
upward momentum fluxes due to turbulence and/or of intense erosion of a loose bed. Under these circumstances,
sediments will move with the distinctive features of bed-load in the region close to the bottom,
whereas suspended sediment will follow the carrying fluid in the upper region of the flow. The paper presents
a two-phase model able to describe both bed and suspended loads. While bed-load dynamics is modeled considering
the particle-bottom and particle-particle collisions and drag received by the fluid, the suspended one
is considered just advected by carrying flow. The model is applied to analyzed the dam-break waves over
erodible beds of light sediment. The numerical results reproduce the main features of the experiment, putting
in evidence the different dynamics of bed and suspended loads
2D Modelling of Unsteady Morphodynamical Processes
No full textMorphodynamical processes are usually strongly unsteady and characterized by a behaviour not explainable using the hypothesis of immediate adaption of solid transport to flow condition. Such consideration stimulated in the last two decades the formulation of many models these not assume the instantaneous adaption hypothesis. The models are based both on two-layers and two-phases approach; moreover recently some of the Authors proposed a depth-integrated two-phase morphodynamical model and demonstrated its unconditionally hyperbolicity. This property, not shared by two-layers models, permits more soundly numerical integration of the model. In the paper capabilities of the proposed model in reproducing transients phenomena is investigated. Comparisons of numerical results against experimental literature data of a dam removal process by overtopping is presented. The model results appear satisfactory; in fact principal qualitative and quantitative agreement between numerical results and experimental data are observed. Moreover it is demonstrate that using an immediate adaption model such agreement cannot been obtained
- …
