Time-domain computations for floating bodies
نویسنده
چکیده
A review of the research carried out at the University of Michigan and elsewhere on the use of time-domain panel methods to compute the hydrodynamic forces acting on floating bodies is presented. Both linear and fully nonlinear computational techniques are presented. The linear problem is solved using a time-domain Green function approach. The fully nonlinear computations are done using an Euler-Lagrange method. At each time step the resulting mixed boundary value problem is solved using a desingularized isolated source. Results are presented for simplified bodies.
منابع مشابه
DAMAGE DETECTION OF BRIDGE STRUCTURES IN TIME DOMAIN VIA ENHANCED COLLIDING BODIES OPTIMIZATION
In this paper, a method is presented for damage detection of bridges using the Enhanced Colliding Bodies Optimization (ECBO) utilizing time-domain responses. The finite element modeling of the structure is based on the equation of motion under the moving load, and the flexural stiffness of the structure is determined by the acceleration responses obtained via sensors placed in d...
متن کاملPerformance of SST k-ω Turbulence Model for Computation of Viscous Drag of Axisymmetric Underwater Bodies
This paper presents 2-D finite volume method for computation of viscous drag based on Reynolds-averaged Navier-Stokes (RANS) equations. Computations are performed on bare submarine hull DREA and six axisymmetric bodies of revolution with a number of length-diameter (L/D) ratios ranging from 4 to 10. Both structured and unstructured grids are used to discretize the domain around the bodies. Diff...
متن کاملA Time-Domain Green’s Function for Interaction between Water Waves and Floating Bodies with Viscous Dissipation Effects
A novel time-domain Green’s function is developed for dealing with two-dimensional interaction between water waves and floating bodies with considering viscous dissipation effects based on the “fairly perfect fluid” model. In the Green’s function, the temporal (lower order viscosity coefficient term) and spatial (higher order viscosity coefficient term) viscous dissipation effects are fully con...
متن کاملNumerical simulation of fully nonlinear interaction between steep waves and 2D floating bodies using the QALE-FEM method
This paper extends the QALE-FEM (Quasi Arbitrary Lagrangian-Eulerian Finite Element Method) based on a fully nonlinear potential theory, which was recently developed by the authors ([1], [2]), to deal with the fully nonlinear interaction between steep waves and 2D floating bodies. In the QALEFEM method, complex unstructured mesh is generated only once at the beginning of calculation and is move...
متن کاملTrapped modes around freely floating bodies in a two-layer fluid channel.
Unlike the trapping of time-harmonic water waves by fixed obstacles, the oscillation of freely floating structures gives rise to a complex nonlinear spectral problem. Still, through a convenient elimination scheme the system simplifies to a linear spectral problem for a self-adjoint operator in a Hilbert space. Under symmetry assumptions on the geometry of the fluid domain, we present condition...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2002