Design of a tunnel submarine to perform controlled maintenance and service duties within pipes, tunnels and sewers, such as water tunnels, water and oil pipelines containing hydraulic liquid substances, is proposed to extend the life span of those systems. For instance, beetle submarines may be used to carry out maintenance and repair work. In this study, two dimensional hydrodynamic design of a submarine of single perforated Rankine oval shape has been analyzed analytically by applying the solid modeling methods of two dimensional potential flow theory in the environments that accommodate velocity, pressure, and force field around them. General flow has been modeled using source-well doubles and the stream function of the flow around the perforated Rankine oval is obtained. Thus, the effect of the size of the interior hole of the Rankine oval, the effect of the channel size and, in case of drift or deviate from the centerline, the effect of the pressure changes have been obtained and solutions have been visualized through Matlab program. It has been concluded that the axial perforation of the oval positively contributes to the drag resistance of the designed submarine.
Ocean Engineering – Elsevier
Published: Nov 1, 2015
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