CFD analysis of broaching for a model surface combatant with explicit simulation of moving rudders and rotating propellers

Carrica, Pablo M.; Sadat-Hosseini, Hamid; Stern, Frederick

doi:10.1016/j.compfluid.2011.10.002

Cited by 53 publications

(25 citation statements)

References 21 publications

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“…The method is well-suited for cases with turbulent flows, where the stresses caused on the interface by the gas phase are negligible or specified, as in wind-induced stresses, while surface tension effects are neglected. Later, the method was used for the analysis of bow wave breaking around a ship advancing in calm water [227], for coupling the ship motion with the flow solver [37,40], and for detailed analysis of a model surface combatant [39]. Furthermore, a semicoupled air/water flow approach was introduced in [106], with the aim of solving not only the free surface motion but also the air flow around the ship.…”

Section: Fixed Discretization Methodsmentioning

confidence: 99%

Numerical Modeling and Experimental Validation of Free Surface Flow Problems

Cruchaga

Battaglia

Storti

et al. 2014

Arch Computat Methods Eng

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In this paper we present a summary of numerical methods for solving free surface and two fluid flow problems. We will focus the attention on level set formulations extensively used in the context of the finite element method. In particular, numerical developments to achieve accurate solutions are described. Specific topics of the algorithms, like mass preservation and interface redefinition, are evaluated. To illustrate these aspects, numerical strategies previously developed are applied to the solution of a sloshing and a water column collapse problems. To assess the capabilities of these techniques, the numerical results are compared against each other and with experimental data. Considering these aspects, the present work is aimed to outline some well reported aspects of level set-like formulations.Fil: Cruchaga, Marcela. Universidad de Santiago de Chile; ChileFil: Battaglia, Laura. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Centro de Investigaciones En Metodos Computacionales. Universidad Nacional del Litoral. Centro de Investigaciones En Metodos Computacionales; ArgentinaFil: Storti, Mario Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Centro de Investigaciones En Metodos Computacionales. Universidad Nacional del Litoral. Centro de Investigaciones En Metodos Computacionales; ArgentinaFil: D'elia, Jorge. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Centro de Investigaciones En Metodos Computacionales. Universidad Nacional del Litoral. Centro de Investigaciones En Metodos Computacionales; Argentin

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Section: Fixed Discretization Methodsmentioning

confidence: 99%

Numerical Modeling and Experimental Validation of Free Surface Flow Problems

Cruchaga

Battaglia

Storti

et al. 2014

Arch Computat Methods Eng

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“…The code used for the current simulations is CFDShip-Iowa V.4 [32]. It is based on the solution of the unsteady Reynolds Averaged Navier-Stokes equations for the liquid phase of a free surface flow.…”

Section: Methodsmentioning

confidence: 99%

Numerical analysis of the interference effects on resistance, sinkage and trim of a fast catamaran

Castiglione

Kandasamy

et al. 2014

J Mar Sci Technol

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The purpose of the present paper is the numerical investigation of the interference phenomena between the waves generated by the individual hulls of a catamaran. The study focuses on the effects of both Froude number and demi-hull separation distance on resistance and on sinkage and trim. The numerical simulations are carried out by the URANS solver CFDShip-Iowa V.4 and, to assess the capability for prediction of resistance, sinkage and trim of the URANS code for twin-hull configuration vessels, a verification and validation study is performed for global as well as for local variables. A very good agreement between the numerical results and the experimental data is obtained, and the validation study demonstrates the high level of accuracy of the current predictions, which are used to have a better insight into the interference phenomena. In accordance with the experiments, within Fr = 0.45-0.65, the catamaran has a significantly higher resistance coefficient compared to the mono-hull; furthermore, the C T value increases with decreasing the separation distance between the twin hulls. On the contrary, at Fr lower than 0.45 and at Fr higher than 0.65, the effects of hull spacing on resistance as well as on sinkage and trim can be neglected. The flow field characteristics, wave pattern, wave cuts and pressure distributions are analyzed through the CFD analysis. Finally, the effects of the Reynolds number on resistance are also investigated and results show a small decrease in interference with increasing the Reynolds number.

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“…In DES simulation for the KVLCC1 performing both turning circle and zig-zag manoeuvre were described; it has to be mentioned that in this case the propellers were directly solved, increasing dramatically the CPU burden. In Carrica et al (2012) the broaching phenomenon for the fully appended ONR Thumblehome model (DTMB 5613) was analysed by a similar approach; details on hydrodynamic loads on the hull, appendages and propellers were discussed. A complete set of turning circle and zig-zag manoeuvres in calm water and in waves for the DTMB5415 was also reported in Carrica et al (2013).…”

Section: Introductionmentioning

confidence: 99%

Turning ability analysis of a fully appended twin screw vessel by CFD. Part I: Single rudder configuration

et al. 2015

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a b s t r a c tThe turning circle manoeuvre of a naval supply vessel (characterized by a block coefficient C B $ 0:60) is simulated by the integration of the unsteady Reynolds-Averaged Navier Stokes equations coupled with the equations of rigid body motion with six degrees of freedom. The model is equipped with all the appendages, and it is characterised by an unusual single rudder/twin screws configuration. This arrangement causes poor directional stability qualities, which makes the prediction of the trajectory a challenging problem. As already shown in previous works, the treatment of the in-plane loads exerted by the propellers is of paramount importance; to this aim each propeller is simulated by an actuator disk model, properly modified to account for oblique flow effects. The main goal of the present paper is to assess the capability of the CFD tool to accurately predict the trajectory of the ship and to analyse the complex flow field around a vessel performing a turning manoeuvre. Distribution of forces and moments on the main hull, stern appendages and rudder are analysed in order to gain a deeper insight into the dynamic behaviour of the vessel. Validation is provided by the comparison with experimental data from free running tests.

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CFD analysis of broaching for a model surface combatant with explicit simulation of moving rudders and rotating propellers

Cited by 53 publications

References 21 publications

Numerical Modeling and Experimental Validation of Free Surface Flow Problems

Numerical Modeling and Experimental Validation of Free Surface Flow Problems

Numerical analysis of the interference effects on resistance, sinkage and trim of a fast catamaran

Turning ability analysis of a fully appended twin screw vessel by CFD. Part I: Single rudder configuration

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