Abstract
A full-nonlinear computation technique based on the Mixed Eulerian-Lagrangian method is presented and validated quantitatively for a fundamental 2-D radiation problem. The time marching is performed with the 4-th order Runge-Kutta-Gill algorithm, and at each time step the integral equations for the velocity and acceleration fields are solved by applying a higher-order boundary-element method with quadratic isoparametric elements. Stable simulations over a large number of periods are possible, because an efficient absorbing beach is used to avoid wave reflections from an outer boundary and regridding is performed to avoid the cluster of nodal points on the free surface.Computed results are compared with linear-theory results of the Green function method in the time and frequency domains, measurements of the time history of waves generated by a wavemaker, and Fourier-analyzed results of hydrodynamic forces acting on an ellipse and a wedge. All of these results are in excellent agreement, confirming the validity of the calculation method.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Journal of the Society of Naval Architects of Japan
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
