SPH simulation of two side-by-side LNG ships’ motions coupled with tank sloshing in regular waves

In this study the interaction of two side-by-side ships' motions coupled with tank sloshing of LNG carriers are simulated by SPH method using open-source code DualSPHysics packages. Firstly, the sloshing flow problem in prismatic and rectangular tanks under forced oscillation motion is simulated to verify and validate the present SPH algorithm. Then the coupled responses of a LNG carrier's motions and tank sloshing in regular waves are simulated, and the results are compared with reference results of the same LNG ship that by CFD simulations, potential flow theory and experiment for validation purpose. Moreover, two side-by-side LNG ships' motions coupled with tank sloshing at different tank loading rates in different regular wave conditions are studied and compared with those of one ship case. The results indicates that higher loading rate of liquid tank can reduce the heave and pitch motion while the roll motion is not sensitive to liquid cargo weight. The gap resonant flow between the two adjacent ships can increase the motion amplitude of the adjacent ships compared with single layout ship case. The present SPH method has potential engineering application values in LNG ships' design and hydrodynamic performance assessment during parallel working conditions.

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  • English

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  • Accession Number: 01909928
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Feb 27 2024 10:08AM