Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : September 08, 2019 - September 11, 2019
In this paper, we analyze the characteristics of the sloshing motion of water tank subjected to horizontal and vertical excitation and investigate damping methods to reduce the sloshing motion by giving rotational motion to water tank. We introduce the two-dimensional model of water tank by supposing the incompressible ideal fluid and show the equation of motion about the antisymmetrical and the symmetrical mode of the sloshing motion. We propose damping methods to reduce the sloshing motion. As the parameter to evaluate the sloshing reduction quantitatively, damping efficiency is introduced. It is shown by simulation that the distance between the pitching axis and the bottom surface of water tank affect the sloshing motion. We perform the simulation to reduce the sloshing motion that is generated by using the acceleration input measured in the periodic impulse excitation experiment which was performed before. It is found that the damping method which adequately sets the position of center of rotation is capable for the sloshing reduction.
