This paper presents a theoretical analysis and a model experiment of sinking behavior of a very long pipe with a water-inflow. With application of a water-inflow, the effects of intake and exhaust port diameters at the pipe ends and pipe length and diameter upon the sinking behavior are examined by numerical analysis using the Runge-Kutta method and by a model experiment. As the result, it is known that the water inflowing method to set up a riser is preferable because a violent landing on the sea floor does not occur. And it is clarified that the maximum bending moment increases as the pipe length and the inner area of cross section increase. Further a way to suppress the maximum bending moment is proposed.
JSME International Journal Series C Mechanical Systems, Machine Elements and Manufacturing
JSME International Journal Series B Fluids and Thermal Engineering
JSME International Journal Series A Solid Mechanics and Material Engineering
JSME international journal. Ser. C, Dynamics, control, robotics, design and manufacturing
JSME international journal. Ser. 3, Vibration, control engineering, engineering for industry
JSME international journal. Ser. A, Mechanics and material engineering
JSME international journal. Ser. 1, Solid mechanics, strength of materials