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The main object of this experiment is to estimate the hydrodyna mic forces acting on a submerged streamlined body placed in a one-end-opened cylindrical tube moving with certain translation al velocity. The best experimental design for this object is mi micking real situation, however sizes of model body and cylinder tube a re just the same as those of real, for avoiding scale effects, mimickingreal situation is not realizable. Hence, in this experiment, ta rget body and cylindrical tube were designed to be towed with v arying bodyposition relative to cylindrical tube. For measuring hydrodynam ic forces and flow velocity in the cylindrical tube, six one-co mponent load cells and several one-hole Pitot tubes were used. Several conditions were checked with various end-plates those had diffe rent opening areas. Experiment results show that forces and flow vel ocity had different tendency with those expected, and the prese nce ofa end-plate slows down the flow velocity in the cylindrical tub e and affects pressure field in the tube to push the model subm erged body forward of the tube. This tendency grows with decreasing o pened area.Keywords : Hydrodynamic force(), Submerged streamlined body( ), One-end-opened cylindrical tube(1  ), Load cell(), One-hole pitot tube(1 )

Experimental Approach for Estimation of Hydrodynamic Force Acting on a Submerged Streamlined Body Translating in a One-end-opened Cylindrical Tube