COLLECTIONS

Documents published in Scipedia

• Experimental and numerical hydrodynamic analysis of a stepped planing hull

  A. Marco, S. Mancini, S. Miranda, R. Scognamiglio, L. Vitiello

  Experimental and Numerical Hydrodynamic Analysis of a Stepped Planing Hull (2017). Applied Ocean Research 64 (2017) 135–154

  
  

  Abstract

  This work addresses the experimental and numerical study of a stepped planing hull and the related fluid dynamics phenomena typically occurring in the stepped hull in the unwetted aft body area behind the step. In the last few years, the interest in high-speed planing crafts, with low weight-to-power ratios, has been increasing significantly, and, in such context, naval architects have been orienting toward the stepped hull solution. Stepped planing hulls ensure good dynamic stability and seakeeping qualities at high speeds. This is mainly due to the reduction of the wetted area, which is caused by the flow separation occurring at the step. This paper presents the experimental results of towing tank tests in calm water on a single-step hull model, which is the first model of a new systematic series. The same flow conditions are analyzed via Reynolds Averaged Navier-Stokes (RANS) and Large Eddy Simulations (LES), with different moving mesh techniques (overset/chimera and morphing grid), performed at different model speeds. The numerical results are in accordance with experimental data, and overset/chimera grid is found to be the best approach between the analyzed ones. The flow patterns obtained numerically through LES on a refined grid appear similar to the ones observed in towing tank investigations through photographic acquisitions. These flow patterns are dominated by a rather complex 3D arrangement of vortices originating from air spillage at both sides of the step. The understanding of these phenomena is important for the effectiveness of stepped hull designs.

  Abstract
  This work addresses the experimental and numerical study of a stepped planing hull and the related fluid dynamics phenomena typically occurring in the stepped hull in the [...]

  • 5
  •  read

Articles (Documents not available in Scipedia)

• Contribution of the High Performance Computing (HPC) in Naval Architecture Researches

  A De Marco, F De Luca, S Mancini, S Miranda, C Pensa, R Scognamiglio, ...

  High Performance Scientific Computing Using Distributed Infrastructures ..., 2017

• Experimental and numerical hydrodynamic analysis of a stepped planing hull

  A De Marco, S Mancini, S Miranda, R Scognamiglio, L Vitiello

  Applied Ocean Research 64, 135-154, 2017

• Applicability of CFD Methods for Roll Damping Determination of Intact and Damaged Ship

  E Begovic, S Mancini, AH Day, A Incecik

  High Performance Scientific Computing Using Distributed Infrastructures ..., 2016

• Three-dimensional pressure distribution on planing hulls

  S Pennino, H Klymenko, A Scamardella, S Mancini, E Begovic

  Maritime Technology and Engineering III: Proceedings of the 3rd ..., 2016

• An Extended Verification and Validation Study of CFD Simulations for Planing Hulls

  F De Luca, S Mancini, S Miranda, C Pensa

  Journal of Ship Research 60 (2), 101-118, 2016

• Flettner Rotor Concept for Marine Applications: A Systematic Study

  A De Marco, S Mancini, C Pensa, G Calise, F De Luca

  International Journal of Rotating Machinery 2016, 2016

• Marine application of flettner rotors

  A De Marco, S Mancini, C Pensa, R Scognamiglio, L Vitiello

  International Center for Numerical Methods in Engineering, 2015

• INTERCEPTOR DEVICE FOR A HIGH-SPEED DISPLACING CRAFT (COMPARISON BETWEEN CFD SIMULATION AND EXPERIMENTAL DATA)

  S Mancini, C Pensa, FD Luca, A Manfredini, R Scognamiglio

  18th International Conference on Ships and Shipping Research 2015, June 24th ..., 2015

• The problem of verification and validation processes of CFD simulations of planing hulls

  S Mancini

  Università degli Studi di Napoli Federico II, 2015

• Marine application of flettner rotors: numerical study on a systematic variation of geometric factor by DOE approach

  A De Marco, S Mancini, C Pensa, R Scognamiglio, L Vitiello

  Proceedings of the 6th International Conference on Computational Methods in ..., 2015

• Hydrodynamic performances of small size swath craft

  E Begovic, C Bertorello, S Mancini

  Brodogradnja 66 (4), 1-22, 2015

• Roll damping assessment of intact and damaged ship by CFD and EFD methods

  E Begovic, A Day, H., S Incecik, Attila, Mancini, D Pizzirusso

  Proceedings of the 12th International Conference on the Stability of Ships ..., 2015

• HYDRODYNAMIC PERFORMANCES OF SMALL SIZE SWATH CRAFT

  Carlo Bertorello; Ermina Begovic

  BRODOGRADNJA / SHIPBUILDING

• Numerical evaluation (CFD) of Wake and Thrust deduction fraction of a Warped Hard Chine Hulls Systematic Series

  F De Luca, S Mancini, C Pensa, G Staiano

  10th RINA High Speed Marine Vehicles Symposium Naples, 15-17 October 2014, 2014

• Preliminary Analysis for Marine Application of Flettner Rotors

  A De Marco, S Mancini, C Pensa

  INT-NAM 2014 (Second International Symposium on Naval Architecture and ..., 2014