Browsing by Author "Gaggero, Stefano"

Now showing items 1-7 of 7

    • A data-driven probabilistic learning approach for the prediction of controllable pitch propellers performance 

      Gaggero, Stefano; Coppede, Antonio; Villa, Diego; Vernengo, Giuliano; Bonfiglio, Luca (CIMNE, 2019)
      Conference report
      Open Access
      The multi-fidelity machine learning framework proposed in this paper leverages a probabilistic approach based on Gaussian Process modeling for the formulation of stochas- tic response surfaces ...

    • A pactical tool for the hydro-acoustic optimization of naval propellers 

      Valdenazzi, Federica; Conti, Francesco; Gaggero, Stefano; Vaccaro, Cristina; Grassi, Davide; Villa, Diego (CIMNE, 2019)
      Conference report
      Open Access
      Propeller optimisation is always the focus of the propeller design process, as such process is aimed at finding the best compromise between often conflicting objectives accounting for many design constraints. The use of ...

    • Comparison of different approaches for the design and analysis of ducted propellers 

      Gaggero, Stefano; Viviani, Michele; Tani, Giorgio; Conti, Francesco; Becchi, Paolo; Valdenazzi, Federica (CIMNE, 2013)
      Conference report
      Open Access
      In the present paper, different approaches for the design and analysis of ducted propellers are presented and discussed, starting from the conventional lifting line / lifting surface approach and considering ...

    • Propeller nozzles design using viscous codes and optimization algorithms 

      Gaggero, Stefano; Villa, Diego; Tani, Giorgio; Viviani, Michele (CIMNE, 2017)
      Conference report
      Open Access
      Marine propellers design requirements are always more pressing and the application of unusual propulsive configurations, like ducted propellers with decelerating nozzles, may represent a valuable alternative to fulfil ...

    • Smoothed particles hydrodynamics simulation of a U-tank in forced motion 

      Papetti, Aldo; Vernengo, Giuliano; Gaggero, Stefano; Villa, Diego; Bonfiglio, Luca (CIMNE, 2019)
      Conference report
      Open Access
      The hydrodynamic forces generated by the water moving inside a U-shaped tank are predicted by using the open-source Smoothed Particle Hydrodynamic (SPH) solver DualSPHysics. In particular the study focuses on the roll ...

    • Systematic analysis of mesh and meshless CFD methods for water impact problems 

      Bonfiglio, Luca; Gaggero, Stefano; Papetti, Aldo; Vernengo, Giuliano; Villa, Diego (CIMNE, 2017)
      Conference report
      Open Access
      Two types of numerical simulations for the hydrodynamic solution of water entry problems are performed and systematically compared in order to highlight their peculiarities: a viscous Unsteady Reynolds Averaged ...

    • The kriso container ship (KCS) test case: an open source overview 

      Gaggero, Stefano; Villa, Diego; Viviani, Michele (CIMNE, 2015)
      Conference report
      Open Access
      In this work, the analysis of the Kriso Container Ship (KCS) test case using the OpenFOA RANS solver is proposed. Both ship resistance in calm water, propeller open water performances, self-propulsion ...