COUPLED TIME-DOMAIN HYDRO-ELASTIC SIMULATION FOR SUBMERGED FLOATING TUNNEL UNDER WAVE EXCITATIONS Conference Paper uri icon

abstract

  • Abstract We develop a fully-coupled time-domain hydro-elasticity model for the Submerged Floating Tunnel (SFT) based on the Discrete-Module-Beam (DMB) method. Frequency-domain simulation based on 3D potential theory results in multibodys hydrodynamic coefficients and excitation forces for tunnel sections. Subsequently, we build the time-domain model with the multibody Cummins equation and external stiffness matrix from the Euler-Bernoulli and Saint-Venant torsion theories. We establish the mooring line model with rod theory and couple components with translational springs at their respective connection locations. We then compare the dynamic motions, wave forces, and mooring tensions between the present and Morison-equation-based elastic models under regular wave excitations at different submergence depths. The present model is especially important for the shallowly submerged tunnel in which the Morison model shows exaggerated motions, especially at high-frequency range.

name of conference

  • Volume 6: Ocean Engineering

published proceedings

  • PROCEEDINGS OF ASME 2021 40TH INTERNATIONAL CONFERENCE ON OCEAN, OFFSHORE AND ARCTIC ENGINEERING (OMAE2021), VOL 6

author list (cited authors)

  • Jin, C., Kim, S., & Kim, M.

citation count

  • 0

complete list of authors

  • Jin, Chungkuk||Kim, Sung-Jae||Kim, MooHyun

publication date

  • January 2021