Sajad Ardeshiri, Mojtaba Dehghanmanshadi, Ali Jabar Rashidi,
Volume 20, Issue 43 (6-2024)
Abstract
One of the most important issues in designing a submarine is calculating its resistance and power. It is still a scientific challenge to calculate and generalize the results from a scaled model to the main vessel. In this study, the effect of the scale in a numerical method on the resistance coefficients of a submarine, including the total, friction and pressure resistance coefficients, has been investigated by numerical simulation method. Also, the accuracy of the results of the existing empirical relationships for calculating submarine resistance coefficients has been evaluated. The SUBOFF submarine model was used to conduct studies. The results show that the existing empirical relationships enable the calculation of the friction coefficient with an error of less than 10%, the pressure coefficient with an error of less than 30%, and the total drag coefficient with an error of less than 8.5%.