Introducing a particular mathematical model for predicting the resistance and performance of prismatic planing hulls in calm water by means of total pressure distribution

Authors

  • P. Ghadimi Amirkabir University of Technology
  • S. Tavakoli Amirkabir University of Technology
  • M. A. Feizi Chekab Amirkabir University of Technology
  • A. Dashtimanesh Amirkabir University of Technology

DOI:

https://doi.org/10.3329/jname.v12i2.22351

Keywords:

Planing hulls, Mathematical modeling, Resistance and performance, Hydrodynamic characteristics, Spray apex

Abstract

Mathematical modeling of planing hulls and determination of their characteristics are the most important subjects in hydrodynamic study of planing vessels. In this paper, a new mathematical model has been developed based on pressure distribution. This model has been provided for two different situations: (1) for a situation in which all forces pass through the center of gravity and (2) for a situation in which forces don not necessarily pass through the center of gravity. Two algorithms have been designed for the governing equations. Computational results have been presented in the form of trim angle, total pressure, hydrodynamic and hydrostatic lift coefficients, spray apex and total resistance which includes frictional, spray and induced resistances. Accuracy of the model has been verified by comparing the numerical findings against the results of Savitsky's method and available experimental data. Good accuracy is displayed. Furthermore, effects of deadrise angle on trim angle of the craft, position of spray apex and resistance have been investigated.

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Author Biographies

P. Ghadimi, Amirkabir University of Technology

Dr. Ghadimi is an Associate Professor of Hydromechanics and Associate Chair of Education at

Dept. of Marine Tehnology,

Amirkabir University of Technology

Tehran, Iran

S. Tavakoli, Amirkabir University of Technology

Sasan Tavakoli is a graduate student

Dept. of Marine Tehnology,

Amirkabir University of Technology

Tehran, Iran

M. A. Feizi Chekab, Amirkabir University of Technology

Mohammad A. Feizi Chekab is a Ph.D. candidate

Dept. of Marine Tehnology,

Amirkabir University of Technology

Tehran, Iran

A. Dashtimanesh, Amirkabir University of Technology

Dr. Dashtimanesh is an Assistant Professor of Hydromechanics at

School of Engineering,

Persian Gulf University

Bushehr, Iran

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Published

30.12.2015

How to Cite

Ghadimi, P., Tavakoli, S., Feizi Chekab, M. A., & Dashtimanesh, A. (2015). Introducing a particular mathematical model for predicting the resistance and performance of prismatic planing hulls in calm water by means of total pressure distribution. Journal of Naval Architecture and Marine Engineering, 12(2), 73–94. https://doi.org/10.3329/jname.v12i2.22351

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