An interface capturing method for free-surface hydrodynamic flows

Queutey, P.; Visonneau, Michel

doi:10.1016/j.compfluid.2006.11.007

Cited by 175 publications

(161 citation statements)

References 19 publications

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“…1-3, respectively. They are written for the incompressible flow of viscous fluid [20]. The mass conservation gains the following form when incompressible phases with constant densities of the distinct phases are considered and when the so-called space conservation law is satisfied in the case of a moving grid [20].…”

Section: Flow Solvermentioning

confidence: 99%

“…In the present study, second-order discretisation schemes were chosen for the user-defined options: a second-order backward scheme for the time derivatives [20], the gamma differencing scheme (GDS) for the convective terms of momentum and turbulence equations [20], and the blended reconstructed interface capturing scheme (BRICS) for the convective term of the volume fraction conservation equation [22].…”

Section: Flow Solvermentioning

confidence: 99%

“…In this study, the computations are performed with an unstructured finite volume solver ISIS-CFD [20,21] that models free-surface flows with a volume-of-fluid method.…”

Section: Flow Solvermentioning

confidence: 99%

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Computational and experimental study on local ship loads in short and steep waves

2013

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Currently, little information exists on the validity of interface-capturing methods in predicting local ship wave loads in short and steep waves. This study compares computational and experimental results in such a case (kA = 0.24, L wave /L ship = 0.16). The results allow the variation of wave loading between ten locations in the bow area of the ship to be observed. The computations were performed with an unstructured RANS solver that models free-surface flows with a volume-of-fluid method. In the model tests, the wave loads were measured with pressure sensors. The analysis of the results focuses on the wave conditions and on the pressure histories of the local wave loads. The computational and experimental results are in good qualitative agreement and encourage the further use of the computational results.

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Section: Flow Solvermentioning

confidence: 99%

Section: Flow Solvermentioning

confidence: 99%

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Computational and experimental study on local ship loads in short and steep waves

2013

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“…A practical consequence of numerical gradient evaluation for a step-function is the parasitic velocity at the interface. Quetey et al [3] take into account the discontinuities at the free surface within the FVM, assuming that the free surface always coincides with the mesh faces. Such an approach requires significant mesh refinement at the free surface.…”

Section: Interface Jump Conditionsmentioning

confidence: 99%

CFD Analysis in Subsea and Marine Technology

Jasak

2017

IOP Conf. Ser.: Mater. Sci. Eng.

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Abstract. Computational Fluid Dynamics (CFD) is established in design and analysis for a range of industries, but its use in Marine and Naval Hydrodynamics is behind the trend. This can be attributed to the complexity of modelling needs, including presence of free surface, irregular transient flows, fluid-structure coupling and presence of established modelling tools based on potential theory.In this paper, state-of-the-art of CFD in Naval Hydrodynamics, wave and offshore applications is given, with an update of recent advances, validation and computing requirements for typical simulation cases. IntroductionSince the beginning of the 21st century, Computational Fluid Dynamics (CFD) has become well established across the range of engineering applications. CFD results are well understood, expectations on accuracy in design studies can be satisfied. For example, automotive industry uses CFD to significantly reduce the use of experimental studies in aerodynamics, internal combustion engine design and exhaust gas after-treatment. Indeed, CFD studies are now regularly performed in applications which were never properly analysed experimentally, such as passenger compartment comfort, vehicle soiling and acoustics-related phenomena, where the design primarily relies on CFD results.Acceptance of CFD in marine engineering, naval hydrodynamics and evaluation of wave loads appears to be lagging behind the trend of other industries. This is partially due to the complexity of free surface flows, but mainly by the fact that the phenomena under consideration imply significantly higher computational requirements. For example, sea-keeping studies of ships in irregular waves or calculation of transfer functions for wave loading on floating structures still cannot be performed at acceptable speed. "Engineering time-scale" in product design requires turn-over time of 8-12 hours for simulations to be practically useful.An important factor in the acceptance of CFD is the presence of alternative simulation tools. Numerical models based on potential flow theory are widely accepted, fast and validated and have been in use for more than a decade. The potential flow assumption, whole adequate for a part of industrial needs, brings it own limitations, mainly due to the formulation, or failure to account for coupled/non-linear effects. The best example is the evaluation of added resistance in waves, which may provide adequate loading results on the hull, but cannot account for forward speed of the ship.The challenges for CFD modelling in naval hydrodynamics can be grouped as follows:

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“…The oldest and still the most popular methods use a fixed mesh to solve a single set of governing equations for the whole fluid flow, with different approaches to locating the interface between the phases. Among the many methods which belong to this category, one may mention the marker-and-cell method (MAC) [1,2], the volume of fluid method (VOF) [3][4][5], the level set method [6,7], the ghost fluid method [8] and a group of front tracking methods [9,10]. These methods are particularly attractive due to straight-forward handling of large deformation and changing topology of the interface.…”

Section: Introductionmentioning

confidence: 99%

A moving mesh finite volume interface tracking method for surface tension dominated interfacial fluid flow

2012

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a b s t r a c tThis paper describes a moving mesh interface tracking method implemented in OpenFOAM for simulating three-dimensional (3-D) incompressible and immiscible two-phase interfacial fluid flows with dominant surface tension forces. Collocated finite volume (FV) method is used for spatial discretisation of Navier-Stokes equations on moving polyhedral mesh. The mesh consists of two parts separated on interface. Fluid flow is solved on each mesh separately and coupling is accomplished in an iterative manner by enforcing the kinematic and dynamic condition at the interface. Surface tension force is calculated on arbitrary polygonal surface mesh with second order accuracy using a ''force-conservative'' approach. Arbitrary polyhedral mesh adapts to the time-varying shape of the interface using vertex-based automatic mesh motion solver which calculates the motion of internal points based on the prescribed motion of interface points by solving the variable diffusivity Laplace equation discretised using the finite element method. The overall solution procedure based on iterative PISO algorithm with modified Rhie-Chow interpolation is second-order accurate in space and time, as is confirmed by numerical experiments on small amplitude sloshing in a two-dimensional (2-D) tank, 3-D droplet oscillation and buoyant rise of a 3-D air bubble in water. Numerical results are found to be in excellent agreement with available theoretical and experimental results.

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An interface capturing method for free-surface hydrodynamic flows

Cited by 175 publications

References 19 publications

Computational and experimental study on local ship loads in short and steep waves

Computational and experimental study on local ship loads in short and steep waves

CFD Analysis in Subsea and Marine Technology

A moving mesh finite volume interface tracking method for surface tension dominated interfacial fluid flow

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