Hydrodynamics design of a tunnel submarine with dimension analysis

Abstract

In this study, hydrodynamic design of a tunnel submarine (with a special form), moving in tunnel and in fixed or moving fluid media, has been investigated. Hydrodynamic design of a tunnel submarine and its system have been studied by dimensional analysis as analytically. Firstly, the paper focuses on the dimensionless parameters that govern the event, to find the independent variable. Secondly, law of resistance effect on a submarine and the pushing force produced by the propeller, and similarity condition for these two, has been obtained. Mathematical model of the tunnel submarine has been formulated. It has been found that resistance coefficient of tunnel submarine depends on Re, Eu, d/D, D0/D, D/L, and U∞/V and trust of tunnel submarine depends on these as well as J’, V/Va progress number.