表面渦格子法を用いたプロペラ定常特性解析

概要

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The applications of surface vortex lattice method to marine propellers are considered. The surface vortex lattice method based on general vortex lattice method is possible to simulate a lifting body including thickness and volume effects by distributing horse-shoe vortices on the surface of the body. The advantages of this method compared to other lifting body theory are the facts that it is easy to simulate a trailing vortex wake geometry behind propeller and that the Kutta-condition is satisfied automatically by convecting the trailing vortices. The geometry of the wake can be calculated by iterative procedure starting from the linear wake model and all vortices are convected to new positions step by step with a small time interval. In this paper, the propeller open characteristics, pressure distribution on the blade and the geometry of the wake concerning to three type propellers have been calculated by the present method. The results of these calculations are good agreements with experiment or other theoretical calculation results.
社団法人日本船舶海洋工学会の論文