The dynamic stability of a surface-piercing plate, advancing with high forward speed in the horizontal plane, is investigated in the scope of linear theory. The hydrodynamic forces on the plate in sway and yaw are presented in terms of frequency and forward speed-dependent added mass and damping coefficients. Flow separation from the trailing edge of the plate is considered. A time-domain boundary integral method using linear distribution of Rankine sources and dipoles on the plate, free surface, and vortex sheet is used to calculate these hydrodynamic coefficients numerically. Comparison between the current numerical results and previous numerical and experimental results is presented. Using linear dynamic stability analysis, the influence of hydrodynamic coefficients on the plate's stability is investigated as a simplified alternative to a semidisplacement vessel.
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December 2015
Research-Article
Linear Dynamic Stability Analysis of a Surface-Piercing Plate Advancing at High Forward Speed
Odd M. Faltinsen
Odd M. Faltinsen
Centre for Autonomous Marine Operations
and Systems (AMOS),
Department of Marine Technology,
Norwegian University of Science
and Technology,
Trondheim 7491, Norway
e-mail: odd.faltinsen@ntnu.no
and Systems (AMOS),
Department of Marine Technology,
Norwegian University of Science
and Technology,
Trondheim 7491, Norway
e-mail: odd.faltinsen@ntnu.no
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Babak Ommani
Odd M. Faltinsen
Centre for Autonomous Marine Operations
and Systems (AMOS),
Department of Marine Technology,
Norwegian University of Science
and Technology,
Trondheim 7491, Norway
e-mail: odd.faltinsen@ntnu.no
and Systems (AMOS),
Department of Marine Technology,
Norwegian University of Science
and Technology,
Trondheim 7491, Norway
e-mail: odd.faltinsen@ntnu.no
Contributed by the Ocean, Offshore, and Arctic Engineering Division of ASME for publication in the JOURNAL OF OFFSHORE MECHANICS AND ARCTIC ENGINEERING. Manuscript received January 26, 2014; final manuscript received September 6, 2015; published online October 5, 2015. Assoc. Editor: Thomas Fu.
J. Offshore Mech. Arct. Eng. Dec 2015, 137(6): 061802 (9 pages)
Published Online: October 5, 2015
Article history
Received:
January 26, 2014
Revised:
September 6, 2015
Citation
Ommani, B., and Faltinsen, O. M. (October 5, 2015). "Linear Dynamic Stability Analysis of a Surface-Piercing Plate Advancing at High Forward Speed." ASME. J. Offshore Mech. Arct. Eng. December 2015; 137(6): 061802. https://doi.org/10.1115/1.4031578
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