Solution of the optimization problem of the model of variable pitch propeller in a uniform stream

Abstract

The paper considers the development of numerical modeling of the flow around the variable pitch propeller (VPP) and its subsequent optimization without the influence of ship hull. In the first step of the work, a three-dimensional computational grid has been obtained, and a routine work in Star-CCM+ has been automated. In the second step the technology of the optimization VPP with strictly defined constraints has been developed. As a result, the satisfactory increase in the efficiency of the propeller has been obtained. The analysis of the results has been carried out and the comparison graphs of experimental data with numerical calculation for the main hydrodynamic characteristics have been constructed. In addition, the influence of the globalization degree of the surrogate optimization algorithm on the quality and the speed of finding a solution within the task definition has been investigated. The results of the work have been obtained in Krilov state research institute (KSRI) and are being used in the applied tasks in shipbuilding.