OpenSHIPOpenSHIP –– HighlyHighly reliablereliable computationalcomputational fluidfluid--dynamicsdynamics (CFD)(CFD) simulationssimulationsg yg y yy ( )( )forfor thethe predictionprediction ofof thethe hydrodynamichydrodynamic performanceperformance ofof thethe hullhull--propellerpropellersystemsystem inin OpenSourceOpenSource backgroundbackground

OpenSHIPOpenSHIP is an industrial research project

to improve the hydrodynamic performance of

the hull-propeller system in order to reduce the

ship design costs for shipbuilding companies

and ship owners.

OpenSHIPOpenSHIP is co financed by the ERDF European Regional Development Fund Friuli Venezia Giulia RegionOpenSHIPOpenSHIP is co-financed by the ERDF - European Regional Development Fund - Friuli Venezia Giulia RegionOperational Programme 2007 - 2013, in the Call for industrial research projects in the field of shipbuild industry andyachts. The project was launched on October the 1st 2010 and has a duration of 36 months.

The OpenSHIP project2

The project ideaThe project ideap jp j

OpenSHIPOpenSHIP uses solutions coming from High PerformanceOpenSHIPOpenSHIP uses solutions coming from High PerformanceComputing resources (HPC) and high - quality simulations of flowsaround the hull and the propeller, based on OpenSource software.

The open source software, as a substitute or integrated withcommercial softwares allows to reach some important aspects such ascommercial softwares, allows to reach some important aspects such as

• lower cost of licenses;• higher flexibility;

hi h t i ti• higher customization.

The background idea is to develop a virtual prototype or simulation framework which takes into accountthe interaction between the hull and the propeller operating in the actual hull wake.It is an ambitious goal since this procedure aims to become part of a standard ship design process.

The OpenSHIP project3

ActivitiesActivitiesIndustrial researchIndustrial research

• one-way hydrodynamic coupling between hull and propeller, in whichone way hydrodynamic coupling between hull and propeller, in whichthe propeller operates behind the appended hull without hydrodynamicfeedback;

• two-way hydrodynamic coupling in which the propeller operates behindthe appended hull with hydrodynamic feedback;after “OpenFOAM: origins and evolution”

Eugene de Villiers - Engys LtdOpenSHIP Seminar @ University of Trieste

• RANS model:− set-up of simulations with both structured and hybrid grids, and

assessment of different OpenSource grid generators;− study, development and implementation of the mathematical models

OpenSHIP Seminar @ University of Trieste

and numerical schemes available in the OpenFOAM library;− design and implementation of the computing infrastructure HPSC -

High Performance Scientific Computing;

• potential model:− development of a new Boundary Element Method (BEM) software

for the simulation of potential flow around the hull with non stationaryand fully nonlinear free surface and lifting surfaces.

The OpenSHIP project4

ActivitiesActivitiesExperimental developmentExperimental development

• RANSE model:− customization and advanced use of the OpenFOAM library for the

prediction of the total hull resistance in calm water and theprediction of the total hull resistance in calm water and thehydrodynamic performance of the propeller operating in theactual hull wake;

− development, customization and advanced use of OpenSource gridgenerators;

after “CFD Applications in Naval Architecture”Andrea Di Mascio - CNR - INSEAN

OpenSHIP Seminar @ University of Trieste

generators;

• potential model:− non stationary formulation for integration with a model for the 6

DOF motion of the ship;DOF motion of the ship;− use of unstructured and non conformal meshes to implement

adaptive mesh refinements based on the solution and completeautomation of the meshing process;

• development of a benchmarking platform shared by partners for directcomparison of results obtained with commercial and OpenSourcesoftware.

The OpenSHIP project5

BenefitsBenefits

The development of the virtual prototype will bring significant advantages:

• reducing the total resistance and power in calm water;

• improving the quality of the wake in the propeller disk;

• drastic reduction of the cost of the experimental tests in the towing tank;p g ;

• reduction of risks related to the global and local vibrations induced by the propeller;

• development and commissioning of a HPC infrastructure as a reference computing

system for CFD application;

• improvement of the scientific and technological know-how in CFD and HPSC;

• development of a customized service for the prediction of the performance of thep p p

propeller-hull system;

• reduction of costs of the licenses of commercial software used in the hydrodynamic

design;

• improvement in the know-how to perform complex computations on increasingly

complex computational resources developed in the project.

The OpenSHIP project

p p p p j

6

PartnersPartners

An enterprise involved in ship design and research, a small company in the field

of Information Technology, two universities and a science and technology park.

Different experiences and interdisciplinary skills that contribute to the

achievement of practical results in the field of ship design and in the growth ofachievement of practical results in the field of ship design and in the growth of

the scientific and business regional community.

The industrial research and experimental development are carried out byCETENA - the Italian Ship Research Centre (lead partner) and Spring Firm Srl,

in partnership with the Department of Civil Engineering and Architecture of theUniversity of Trieste and the team of research on Applied Mathematics of SISSA- International School for Advanced Studies.

The coordination and dissemination are in charge of Friuli Innovazione,Research and Technology Transfer Centre.

The OpenSHIP project7

THANK YOU FOR YOUR ATTENTION

Contacts

A li Al i iAnnalisa AlcinesioCETENA - the Italian Ship Research Centre (lead partner)Phone +39 010 5995 769 E il l i i @ t itE-mail alcinesio@cetena.it