Experimental and Numerical Study of a Submerged Submarine Moving Near the Free Surface

Resistance and wave pattern due to the motion of an underwater vehicle model are obtained by experimental and numerical methods. The tests on the model are carried out in Shohada-e- Khalij-e-Fars National Marine Laboratory. The model is towed with the carriage at various speeds and two depths of submergence in the basin. The model is made from polyethylene and is attached to the carriage by a strut at the end. The strut at the end allows to measure the wave pattern of the body alone but the measured resistance is for the body and the strut. The computational fluid dynamics is used to study the interaction of body and strut and the resistance of the body is obtained by eliminating the effect of the strut. The wave profile is measured by four fix sensors at the transverse section of the basin. The wave profile is also obtained by computational fluid dynamics computations and compare with the experimental measurements. The numerical and experimental results are comply with each other. These experimental results can be used to validate and calibrate the numerical solutions.