جستجوی مقالات مرتبط با کلیدواژه "propeller hydrodynamic" در نشریات گروه "مهندسی دریا"

In this paper, lifting line theory(LLT) and finite volume method (FVM) have been used for numerical simulation of hydrodynamic performance of marine propeller. The LLT is based on the potential flow and vortex theory to quickly design and analyze the marine propeller. On the other hand, the FVM is based on the discretization of the Navier-stocks equations. In this paper, the accuracy and efficiency of these two methods have been investigated for analyzing the performance of the submerged propeller. In order to validate the methods, the geometry and experimental results of the VP1304 and DTMB4119 propellers have been used. For studying the hydrodynamic performance of marine propeller,the torque and thrust coefficients versus advance ratio were computed by FVM and LLT. For all of the advance ratios, the FVM provides acceptable thrust and torque coefficients. Wheras its preprocessing and processing times are high. In return, the LLT in low advance ratios did not calculate the satisfactory results. Wheras it needs short cpu time to process.Therefore it is suitable for parametric studies.