scholarly journals Nonlinear time‐domain wave‐structure interaction: a parallel fast integral equation approach

2021 ◽  
Author(s):  
Jeffrey C. Harris ◽  
Emmanuel Dombre ◽  
Michel Benoit ◽  
Stephan T. Grilli ◽  
Konstantin I. Kuznetsov
Keyword(s):  
Integral Equation ◽  
Time Domain ◽  
Wave Structure ◽  
Equation Approach ◽  
Structure Interaction ◽  
Integral Equation Approach ◽  
Wave Structure Interaction ◽  
Nonlinear Time Domain

scholarly journals Time-Dependent Wave-Structure Interaction Revisited: Thermo-Piezoelectric Scatterers

Fluids ◽  
2021 ◽  
Vol 6 (3) ◽  
pp. 101
Author(s):  
George C. Hsiao ◽  
Tonatiuh Sánchez-Vizuet
Keyword(s):  
Field Equation ◽  
Time Domain ◽  
Wave Structure ◽  
Scaling Factor ◽  
Time Dependent ◽  
Laplace Domain ◽  
Boundary Field ◽  
Structure Interaction ◽  
The Time Domain ◽  
Wave Structure Interaction

In this paper, we are concerned with a time-dependent transmission problem for a thermo-piezoelectric elastic body that is immersed in a compressible fluid. It is shown that the problem can be treated by the boundary-field equation method, provided that an appropriate scaling factor is employed. As usual, based on estimates for solutions in the Laplace-transformed domain, we may obtain properties of corresponding solutions in the time-domain without having to perform the inversion of the Laplace-domain solutions.

A Parametric Study of Wave - Structure Interaction Using the Coupled Transient CFD and Diffraction Methodology

2014 ◽  
Author(s):  
David Jia ◽  
Madhusuden Agrawal ◽  
Jim Malachowski
Keyword(s):  
Steady State ◽  
Diffraction Analysis ◽  
Time Domain ◽  
Cfd Simulation ◽  
Wave Structure ◽  
Structure Interaction ◽  
Added Masses ◽  
Parametric Studies ◽  
Traditional Approaches ◽  
Wave Structure Interaction

This paper is a continuation of our previous paper [1] (OMAE2013-11569) where we demonstrated a state-of-the-art methodology for predicting the motions and loads of subsea equipment and structures during offshore operations basing on time domain simulations of subsea equipment and structures. Instead of relying on simplified equations or empirical formulations to calculate and estimate the hydrodynamics coefficients, or using steady-state CFD simulation on a stationary equipment and structure to predict drag and added masses on submerged structures in traditional approaches, this methodology couples the transient CFD with diffraction analysis. The time domain diffraction simulation is coupled with multiphase CFD simulation of subsea equipment and structures in waves. Transient CFD model with rigid body motion for the equipment and structure calculates added masses, forces and moments on the equipment and structure for diffraction analysis, while diffraction analysis calculates linear and angular velocities for CFD simulation. In this paper, parametric studies are performed to investigate effect of wavelength, wave amplitude and wave current on the motion of a hollow cylinder in waves. The results of the parametric studies in this paper show wave-structure interaction of a hollow cylinder in waves, and the effect of waves and current on the motion of the cylinder and the associated forces. The results provide better understanding of structure motion and associated forces in waves using this coupled methodology. The coupled methodology eliminates the inaccuracy inherited from assumed or calculated hydrodynamic properties that are obtained by using simplified equations or empirical formulations [2], or by using steady-state CFD analyses in traditional decoupled approaches. The results show that the coupled physics of wave and cylinder motion is captured by using this methodology, otherwise is not captured by traditional approaches. This coupled methodology has potential applications in analyses of the motions of subsea equipment and structures in wave during offshore operations.

Sign in / Sign up

Export Citation Format

Share Document