Calm Water Performance of Hard-Chine Vessels in Semi-Planing and Planing Regimes

Polish maritime research

Parviz GhadimiCorresponding authorAmirkabir University of Technology 424 Hafez Ave. 3314 Tehran, Iran (Islamic Republic of)EmailOther articles by this author:De Gruyter OnlineGoogle Scholar¹  Sasan TavakoliAmirkabir University of Technology, Iran (Islamic Republic of )Other articles by this author:De Gruyter OnlineGoogle Scholar²  Abbas DashtimaneshPersian Gulf University, Iran (Islamic Republic of)Other articles by this author:De Gruyter OnlineGoogle Scholar³ 

[1] Amirkabir University of Technology 424 Hafez Ave. 3314 Tehran, Iran (Islamic Republic of);Amirkabir University of Technology, Iran (Islamic Republic of );Persian Gulf University, Iran (Islamic Republic of)

关键词: Keywords: hard-chine vessels;    planing and semi-planing regimes;    performance prediction;    2D+T theory;   

DOI  :  10.1515/pomr-2016-0068

学科分类：工程和技术（综合）

来源: Politechnika Gdanska * Wydzial Oceanotechniki i Okretownictwa

【 摘 要 】

In the current paper, a mathematical model is developed for performance prediction of hard-chin boats which can be used in both semi-planing and planing regimes. The proposed model bases on the 2D+T theory and implements pressure distributions over the length of the hull in order to compute the forces. To determine the forces in the semi-planing range, a function is proposed for the non-dimensional length at which the transom effect appears. Three drag components, which are: frictional drag, induced drag, and spray drag, are considered in the computations performed using an iterative method to satisfy two equilibrium equations. The validity of the proposed method is verified by comparing the predicted trim angle and resistance against the available experimental data. Based on this comparison, it is observed that the proposed method reveals satisfying accuracy in both semi-planing and planing regimes. The method is then used to study variation of hydrodynamic and hydrostatic forces as the hull makes a transition from the semi-planing regime to the planing regime. In addition, different components of the resistance are analyzed.

【 授权许可】

Unknown