A Numerical Study of the Effects of Changing the Height and Location of the Step on a Planing Flat Plate

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Barmala Bahare; Kohansal Ahmadreza; DASHTIMANESH ABBAS

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Paper Information

Journal: JOURNAL OF MARINE ENGINEERING Year:2017 | Volume:13 | Issue:25 Page(s): 15-22

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Information Journal Paper

Title

A Numerical Study of the Effects of Changing the Height and Location of the Step on a Planing Flat Plate

Author(s)

Barmala Bahare | Kohansal Ahmadreza | DASHTIMANESH ABBAS | Issue Writer Certificate

Keywords

Step hullQ1

Numerical analysisQ1

Reduction of the friction dragQ1

Planing hullQ1

HydrodynamicsQ3

Abstract

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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APA: Copy

Barmala, Bahare, Kohansal, Ahmadreza, & DASHTIMANESH, ABBAS. (2017). A Numerical Study of the Effects of Changing the Height and Location of the Step on a Planing Flat Plate. JOURNAL OF MARINE ENGINEERING, 13(25 ), 15-22. SID. https://sid.ir/paper/60976/en

Vancouver: Copy

Barmala Bahare, Kohansal Ahmadreza, DASHTIMANESH ABBAS. A Numerical Study of the Effects of Changing the Height and Location of the Step on a Planing Flat Plate. JOURNAL OF MARINE ENGINEERING[Internet]. 2017;13(25 ):15-22. Available from: https://sid.ir/paper/60976/en

IEEE: Copy

Bahare Barmala, Ahmadreza Kohansal, and ABBAS DASHTIMANESH, “A Numerical Study of the Effects of Changing the Height and Location of the Step on a Planing Flat Plate,” JOURNAL OF MARINE ENGINEERING, vol. 13, no. 25 , pp. 15–22, 2017, [Online]. Available: https://sid.ir/paper/60976/en

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