Volume 13, Issue 25 (9-2017)                   2017, 13(25): 15-22 | Back to browse issues page

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Kohansal A, Barmala B, Dashtimanesh A. A Numerical Study of the Effects of Changing the Height and Location of the Step on a Planing Flat Plate . Journal Of Marine Engineering. 2017; 13 (25) :15-22
URL: http://marine-eng.ir/article-1-476-en.html
Persian Gulf University
Abstract:   (898 Views)

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 on a flat plate is investigated in calm water with computational fluid dynamics methods. First, the vessel is modeled as a planing flat plate in a fixed trim and draft. By adding a transverse step to the geometry of the model, the proportion of frictional drag to the lift is calculated and compared with the other results. Also, changing the amount of frictional drag and wetted surface due to the changing of the longitudinal position and height of the step are investigated.

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Type of Study: Research Paper | Subject: Ship Hydrodynamic
Received: 2016/03/9 | Accepted: 2016/12/21

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