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Alberto Cuoci
Polytechnic University of Milan
160Publications
27H-index
2,604Citations
Publications 160
Newest
#1Giuseppe D'Alessio (Polytechnic University of Milan)
#2Alessandro Parente (ULB: Université libre de Bruxelles)H-Index: 17
Last.Alberto Cuoci (Polytechnic University of Milan)H-Index: 27
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Abstract Numerical simulations of multi-dimensional laminar flames with complex kinetic mechanisms are computationally very demanding, because of the large number of species and the strong non-linearity and stiffness of governing equations. In this work, we present and apply a novel adaptive chemistry methodology for mitigating the computational cost of such simulations, based on machine-learning algorithms which automatically classify the composition space via a priori defined classifiers. The ...
Abstract A detailed analysis on the evaporation of acetic acid and ethylene glycol droplets is performed experimentally and numerically. The isolated droplet is positioned in a combustion chamber, suspended on a thermocouple and evaporated in buoyancy driven convection, following the thermal history throughout the droplet lifetime. The experiments provide quantitative and qualitative data on the evaporation physics of acetic acid, ethylene glycol and their mixture. The data are then modeled adop...
#1Pietro Paolo Ciottoli (Sapienza University of Rome)H-Index: 7
#2Riccardo Malpica Galassi (Sapienza University of Rome)H-Index: 5
Last.Mauro Valorani (Sapienza University of Rome)H-Index: 14
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#2Alberto CuociH-Index: 27
Last.A. SadikiH-Index: 20
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In this contribution, velocity and its dissipation spectra in turbulent non-premixed jet flames are investigated by using two Direct Numerical Simulation (DNS) databases of temporally evolving jets with different bulk jet Reynolds numbers. In the DNS differential diffusion and flame dynamics effects have been accounted for and the flames experience high levels of extinction followed by re-ignition. It turns out that the spectra extracted from different statistically homogeneous planes across the...
#1Agnes Livia Bodor (Polytechnic University of Milan)
#2Benedetta Franzelli (Université Paris-Saclay)H-Index: 9
Last.Alberto Cuoci (Polytechnic University of Milan)H-Index: 27
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Abstract A numerical post-processing strategy to reconstruct the size of soot primary particles is presented in this work in the context of the chemical sectional models. The proposed technique is based on solving the transport equation of the primary particle number density for each considered aggregate size. The chemical source terms are derived from the corresponding chemical reactions. The validity of the proposed approach is tested on target flames of the International Sooting Flame (ISF) W...
#1A. Shamooni (Technische Universität Darmstadt)
#2Alberto Cuoci (Polytechnic University of Milan)H-Index: 27
Last.A. Sadiki (Technische Universität Darmstadt)H-Index: 20
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In this work, the performances of two recently developed finite-rate dynamic scale similarity (SS) sub-grid scale (SGS) combustion models (named DB and DC) for non-premixed turbulent combustion are a priori assessed based on three Direct Numerical Simulation (DNS) databases. These numerical experiments feature temporally evolving syngas jet flames with different Reynolds (Re) numbers (2510, 4487 and 9079), experiencing a high level of local extinction. For comparison purposes, the predicting cap...
#1Andrea Bertolino (Polytechnic University of Milan)
#2Alessandro Stagni (Polytechnic University of Milan)H-Index: 8
Last.Alessio Frassoldati (Polytechnic University of Milan)H-Index: 34
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Abstract In this work, the flammable range of several hydrocarbons was predicted using a freely-propagating flame method for pure hydrocarbons and their mixtures, investigating the effects of operating conditions, in terms of temperature, pressure, fuel/oxidizer composition. The model showed accurate agreement with a wide set of experimental data. The average deviation between the experiments and the model was reduced to ∼20% for the UFL of methanol, methane, ethane, propane, n-butane, n-heptane...
#1Warumporn Pejpichestakul (Polytechnic University of Milan)H-Index: 2
#2Alberto Cuoci (Polytechnic University of Milan)H-Index: 27
Last.T. Faravelli (Polytechnic University of Milan)H-Index: 43
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Abstract Polycyclic aromatic hydrocarbons (PAHs) are known as soot precursors, but their formation/consumption is not fully understood. A recent comprehensive experimental study of premixed laminar ethylene flame [23] investigated the transition from gas-phase to soot particles. The complex fluid dynamics of this system is taken into account to compare model predictions with experimental measurements and thus further validate a detailed kinetic mechanism of soot formation. The relatively low inl...
#1Gabriele Scalia (Polytechnic University of Milan)H-Index: 2
#2Matteo Pelucchi (Polytechnic University of Milan)H-Index: 7
Last.Barbara Pernici (Polytechnic University of Milan)H-Index: 42
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#1A.E. Saufi (Leonardo)
#2Alessio Frassoldati (Leonardo)H-Index: 34
Last.Alberto Cuoci (Leonardo)H-Index: 27
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Abstract This paper aims at presenting the DropletSMOKE++ solver, a comprehensive multidimensional computational framework for the evaporation of fuel droplets, under the influence of a gravity field and an external fluid flow. The Volume Of Fluid (VOF) methodology is adopted to dynamically track the interface, coupled with the solution of energy and species equations. The evaporation rate is directly evaluated based on the vapor concentration gradient at the phase boundary, with no need of semi...
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