Effect of Deadrise Angle on Wet Surface and Hydrodynamic Parameters of Planning Vessel by Experimental and Numerical Methods

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MOGHADDAS A.A.; SADEGHI M.

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Journal Paper

Paper Information

Journal: IRANIAN JOURNAL OF MARINE SCIENCE AND TECHNOLOGY Year:2022 | Volume:26 | Issue:101 Page(s): 51-57

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Information Journal Paper

Title

Effect of Deadrise Angle on Wet Surface and Hydrodynamic Parameters of Planning Vessel by Experimental and Numerical Methods

Author(s)

MOGHADDAS A.A. | SADEGHI M. | Issue Writer Certificate

Keywords

Dead rise angle

Model test

Planing model

CFD

Abstract

Today, with the expansion of maritime trade and the need to use high speed in vessels, the analysis of this type of vessel is of particular importance. In this research, using numerical and Experimental methods, the effect of deadrise angle of vessel on hydrodynamic parameters is investigated. The experimental method has been used as an accurate and tested method for estimating hydrodynamic parameters. But in the case of planing vessels, determining the wet surface of the vessel is not easy. For this purpose, numerical method has been used to determine the wet surface of the planing vessel in this research. First, the experimental results of the current research are compared with the laboratory results of David Taylor, and then, the numerical results are validated with the experimental results. By validating the numerical and experimental results, the floating wet surface is calculated and finally the hydrodynamic dimensionless coefficients are calculated for each deadrise angle. Comparison of laboratory results of the present study with the laboratory results of David Taylor shows the recording of very good results in the laboratory. Also, the comparison of numerical and experimental results in this study, which is less than 10%, shows the high accuracy of numerical results. Finally, by comparing the percentage of wet surface increase in the two deadrise angles, it is concluded that at the speed of 5. 71, there is a nearly 20% increase in the wet surface at the deadrise angle of 25 compared to the deadrise angle of 20°, . Also, by comparing the coefficients of total resistance, at the speed of 5. 71 m/s, the coefficient of total resistance of the boat with deadrise angle 20.

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APA: Copy

MOGHADDAS, A.A., & SADEGHI, M.. (2022). Effect of Deadrise Angle on Wet Surface and Hydrodynamic Parameters of Planning Vessel by Experimental and Numerical Methods. IRANIAN JOURNAL OF MARINE SCIENCE AND TECHNOLOGY, 26(101 ), 51-57. SID. https://sid.ir/paper/986591/en

Vancouver: Copy

MOGHADDAS A.A., SADEGHI M.. Effect of Deadrise Angle on Wet Surface and Hydrodynamic Parameters of Planning Vessel by Experimental and Numerical Methods. IRANIAN JOURNAL OF MARINE SCIENCE AND TECHNOLOGY[Internet]. 2022;26(101 ):51-57. Available from: https://sid.ir/paper/986591/en

IEEE: Copy

A.A. MOGHADDAS, and M. SADEGHI, “Effect of Deadrise Angle on Wet Surface and Hydrodynamic Parameters of Planning Vessel by Experimental and Numerical Methods,” IRANIAN JOURNAL OF MARINE SCIENCE AND TECHNOLOGY, vol. 26, no. 101 , pp. 51–57, 2022, [Online]. Available: https://sid.ir/paper/986591/en

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