Air Spouting Type Actuator for Ballast Containers of Submerged Floating Tunnel Subjected Cross Flow to Reduce Fluid Force

摘要

In these days, there are many reports about marine development in several countries especially Japan and Norway. In this paper, we researched for the unsteady fluid lift force on S. F. T modeled by circular cylinder caused by vortex and examined air spouting type actuator for reduction of this unsteady fluid lift force. we can recognize that this actuator has ability to reduce (Cln) at some parameters (void fraction, oscillation ratio, non-dimensioned velocity, oscillation frequency, spout- ing patterns) but made Cdn increased. So that, we propose the most appropriate parameters to reduce CIn and increased Cdn at minimum experimentally.