جستجوی مقالات مرتبط با کلیدواژه « جانمائی طولی و عرضی » در نشریات گروه « مکانیک »

The importance of changing of the longitudinal and transverse layout of the side hulls of a trimaran ship on the total resistance in calm water has been of great interest. Wave making resistance can be reduced by changing the layout of side hulls. In this study, for verification of numerical solution, some changes in the side hull arrangements are vinvestigated by experimental method and the amount of resistance and its related variables have been carefully recorded. Then, a numerical model is developed in OpenFOAM code, and in a numerical tank, the details of the fluid flow around the ship are investigated. In addition to the proper accuracy of numerical results, it can be seen that transverse position of the side hulls has a significant effect on ship total resistance. However, the variation in drag force due to the changing in longitudinal position of side hulles is. The effect of the transverse distance between the side hulls and the central line of the main hull has been studied dimensionlessly on four different positions. A similar analysis has been performed for changes in the longitudinal position of the side hulls. Changing the transverse layout of the side hulls can result in a 10% reduction in the total resistance of trimaran.