With the large-scale ships and the complexity of the dynamic environment in the berthing waters,when using appendix F of the current JTS 144-1-2010 Load Code for Harbor Engineering to calculate the ship flow force,it is found that there are many deficiencies in the formula,mainly as follows:1)the applicable range of relative water depth is narrow;2)The calculation methods for flow direction angle sections are not unified;3)the action points of longitudinal and transverse flow components are not clear;4)the introduction of relevant data defects,etc.Seriously restrict the promotion and application of standards and specifications.Therefore,based on the research on the revision of the standard,by collecting and comparing the data of foreign standards and guidelines,as well as combining the results of a large number of ship physical model tests carried out by the author in the early stage,the applicable conditions of relative water depth in the current standard flow force calculation formula are expanded from 1.5 to 6.0;A new coordinate system with the center of the ship as the force application point was proposed,which adopts a revised method for calculating water flow force composed of three parts:transverse force,longitudinal force,and eccentric moment,meeting the purpose of standard revision.
ship flow forcerelative water depthflow force coefficientcalculation method
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