School of Earth, Energy & Environmental Sciences

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  • Davide Picchi

    Davide Picchi

    Postdoctoral Research Fellow, Energy Resources Engineering

    BioActually, I am a postdoctoral research fellow in Energy Resources Engineering at Stanford University in the group of Prof. Ilenia Battiato. Research is my main activity and I am interested in studying multiphase flow systems commonly encountered in industrial application (oil, energy, chemical industry) and in the emerging field of bio-fluid mechanics. During years I considered many theoretical approaches, such as stability analysis, the derivation of volume-averaged models, or uncertainty quantification, and I performed also experiments.

    Previously, I was a Postdoctoral Fellow at Tel Aviv University in the group of Prof. Neima Brauner and Prof. Amos Ullmann. The research activity was focused on a theoretical investigation on two-phase flows in pipes in the case one of the two phases is a non-Newtonian fluid. The biggest attention was payed on the stratified and core-annular flow regime flow regime. Stability analysis and flow characteristics were studied.

    - Ph.D. at UniBS

    The Ph.D. was in collaboration with the Italian oil company ENI and the advisor was Prof. Pietro Poesio (Università degli Studi di Brescia). The main topic consisted in the study of gas/non-Newtonian systems in pipes (particular effort is given to shear-thinning fluid), including both theoretical and experimental activities. A strong interest is given on the developing of predicting tools, like the two-fluid model: estimating pressure drop and flow pattern transitions along the pipelines have a practical relevance for industry applications. In addition, experimental investigations were performed. Some of the published results of the Ph.D. includes a pre-integrated model, the stability analysis (linear and nonlinear) of the stratified flow regime including the issue of multiple solutions; slug flow characteristics were measured (bubble velocity and frequency) and a new correlation was proposed for the slug frequency accounting for the liquid rheology. Uncertainty quantifications of Two-fluid model predictions.

    In addition, I provided support in teaching activity for the course of Thermodynamics by Prof. P. Poesio.

    At the end of the Ph.D. I was a visiting Ph.D. student at Tel Aviv University, in the group of Prof. Neima Brauner and Prof. Amos Ullmann.
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    M.Sc. thesis was developed as visiting student in collaboration with Prof. Gijs Ooms (TUDelft) and Prof. F. Toschi (Tu/e, Eindhoven) and was about carrying out numerical simulation of particle flow in pores using the Lattice-Boltzmann technique.
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    B.Sc. thesis was focused on a experimental and theoretical modelling of high-viscous-oil-in-water dispersions in pipes under the supervision of Prof. Pietro Poesio (Università degli Studi di Brescia). experiments were performed in a pipe facility including holdup measurements using an existing home made capacitance probe.
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    Communications at International Conferences

    1) 2014 Picchi, D., Manerba, Y., Correra, S., Margarone, M., Poesio, P. 2014. Experimental investigation of gas/Non-Newtonian liquid two-phase flows through horizontal and slightly inclined pipes., 13th International Conference Multiphase flow in industrial plant, Sestri Levante (Genova).
    2) 2016 Picchi, Poesio, P. 2016. Uncertainty quantification of the two-fluid model and flow pattern transition boundaries predictions for the stratified flow regime by MonteCarlo simulations and polynomial chaos expansions, 9th International Conference on Multiphase Flow (ICMF 2016), Firenze (Italy)
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