... ABSTRACT In this study the numerical wave tank for fluid-structure interactions, Hydro3D-NWT, is employed to simulate the impact of a free-fall triangular wedge with the method of Large Eddy Simulations (LES). The filtered Navier-Stokes equations are solved based on finite differences...

... is identified, which is characterized by a complex turbulent flow field and should provide habitat and shelter to a number of marine species. KEY WORDS: Artificial reefs; Navier-Stokes equations; immersed boundary method; large-eddy simulation INTRODUCTION Climate variability and extreme meteorological events...

... geometry navier-stoke equation expansion grid vorticity pitch distribution wake model accuracy tsr calcagni project danilo calcagni ABSTRACT The present work deals with the assessment of variable fidelity simulation models to analyze the complex phenomenology of a turbine operating...

... equation fse modeling & simulation engineering accuracy upstream oil & gas sensor grid resolution recurve wave impact wg 5 grigoriadis parapet interaction reservoir simulation experiment timeframe navier-stoke equation interface wave period Proceedings of the Thirty-second...

... FLOW-3D ® is used to simulate Euler approximation of Navier-Stokes equations and generate radiated water wave data. Results show that non-linear radiated waves are not proportional to the heave amplitude and that the geometric decay follows a similar trend as linear waves. Moreover, for large heave...

... ABSTRACT An in-house fourth-order finite volume solver to solve the Navier-Stokes equations for incompressible viscous flows with the moving rigid geometry and free surface, which was previously validated on harmonic excited rolling of a scaled mid-section of KVLCC2 ship, is applied...

...-structure interactions. The large-eddy simulation approach has been adopted in this study, where the model is based on the filtered Navier-Stokes equations with the dynamic Smagorinsky sub-grid model being used for the unresolved scales of turbulence. The governing equations have been discretized using...

... Abstract The purpose of present study aims at the establishment of a numerical model to simulate viscous incompressible flows interacting with moving solids using an immersed boundary method. The model based on the Navier-Stokes equations is devised for the solution of the viscous flows...

... performed by many researchers with the use of finite difference method and finite element method based on grid/mesh-based frameworks (Stein, de Borst and Hughes, 2004). Numerical difficulties have been experienced in the solution of the Navier-Stokes equations at higher Reynolds numbers. In particular...

... Abstract We develop a simple but effective method for generating waves for a 3D Navier-Stokes equation solver of Kang and Sotiropoulos (2012). In this method the waves are generated by imposing a velocity boundary condition at the bottom of the computational domain. The advantage...

.... The behavior of the new model will be demonstrated on simulations of the water motion inside moonpools, and on extreme wave impact against a semi-submersible offshore platform. For validation purposes, MARIN has performed a series of experiments. THE NAVIER-STOKES EQUATIONS The incompressible, turbulent fluid...

... renewable energy representation equation of state equation interaction fluid-structure interaction free-surface elevation numerical wave tank evolution discretisation mesh elevation navier-stoke equation interface fluid modeling numerical result wind energy unstructured mesh Numerical...

... between the two hulls. Interesting comparison are finally drawn between the behavior of the three different cross section typologies. cylinder monohull catamaran frequency navier-stoke equation coefficient upstream oil & gas assumption technical report viscous effect radiation force...

... in order to damp ship motions, that is the case of passive anti-roll tanks. Such tanks are helpful for ships travelling at low speed that cannot take advantage of the wing support effect of stabilizer fins. displacement computational time calculation navier-stoke equation pressure peak equation...

... solved by three stages with finite element method (FEM): solving a two-fluid Navier-Stokes equation over the whole domain; transporting the level set function with the obtained velocity field; the level set function correction through a renormalization with continuous penalization which preserves...

... ABSTRACT: Wave loads are important in problems related to offshore structure, such as wave run-up, slamming. The computation of such wave problems are carried out by CFD models. This paper presents one model, NS3, which solve 3D Navier-Stokes equations and use Volume of Fluid (VOF) method...

... into a fluid of different density are examined in a series of numerical computations. The Navier-Stokes equation for an inhomogeneous fluid with the transport equation for solute is solved by the finite volume method. The results show that initially the gravity currents propagate with the constant speeds after...

... entry problem is solved by incompressible Navier-Stokes equations based on VOF surface capturing method and automatic deformation dynamic method. In recent decades, many methods were developed to solve these kinds of problems. Battistin(2003) used a boundary-element formulation with nonlinearities...

... The application of a parallel finite element scheme to three-dimensional incompressible viscous fluid flow around a circular cylinder is presented. The scheme is based on the Petrov-Galerkin weak formulation with exponential weighting functions. The incompressible Navier-Stokes equations...

... flux viscosity instantaneous velocity field mass-force model certain location upstream oil & gas impulsive wave grid velocity field navier-stoke equation boundary time step equation interface particle-fluid interface two-phase model On the Study of Impulsive Waves Caused...