Numerical hydrodynamic analysis of submerged propeller under different operating conditions using computational fluid dynamics method

In the last century, with the advent of technology and the need for increased speeds in maritime transport, pay attention to the high-efficiency propulsion systems has increased dramatically. The important note in this regard is that, in order to increase speed discussions about that always have been the focus. One of the related methods is to, design and select the appropriate propulsion system and to select the propeller with remarkable efficiency. In this paper, numerical simulation of a four blade submerged propeller using the computational fluid dynamics method with the help of STAR CCM + software has been performed and the effects of these kinds of propellers on the key parameters of efficiency, torque coefficient and the thrust coefficient is evaluated in terms of the advance ratio and compared with the available experimental results and good agreement between the numerical results and the existing experimental results is observed. The largest difference between the efficiency obtained from the simulation and the experimental results was 15%, which occurred in the advance ratio of 1.4.