نتایج جستجو برای: speed planing hull
تعداد نتایج: 216261 فیلتر نتایج به سال:
Planing properties of seven Australian plantation-grown eucalypts were evaluated to provide recommendations on how these species should be machined and considered for the manufacture of high quality furniture and furnishings. The surface quality produced for each species was evaluated using eight planing conditions. All species performed well producing equivalent or better results than mature t...
For most vessels, the frictional resistance of the hull in the water has the largest share in the total resistance of the ship, so in the past few decades much research have been done on reducing the frictional resistance of ships. Among these, stepped vessels with a significant reduction in the amount of wetted surface have a special place. In this study, the effect of a single transverse-step...
This paper presents CFD (Computational Fluid Dynamics) simulations of the performance a planing hull in calm-water condition, aiming to evaluate similarities and differences between results different models. The key these models are ways they use compute turbulent flow simulate motion vessel. vessel on water leads strong fluid motion, movement from its initial position can be relatively signifi...
In this article, the most important specifications of hydrofoil floats, i.e. their seakeeping under regular and irregular waves under different encounter angles of wave, has been investigated. Numerical simulation has been done using STAR CCM+ software. Surge, heave, roll and pitch motions are kept free at the same time and their effects on each other are taken into account. USV01 model, whose ...
A mathematical model for predicting the maneuvering motion of a ship is constructed, using planing craft with dual waterjet propulsion as object study. This based on standard approach MMG (Maneuvering Modeling Group) and uses Runge–Kutta algorithm to solve differential equations. For simulation turning Z-shape motion, RANS equation first solved program STAR-CCM + then PMM hull simulated overlap...
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