波浪增阻计算方法对船舶航速的影响分析

失速系数（ fw）是EEDI公式的计算参数之一。文章研究了典型海况下不同的波浪增阻计算方法对船舶航速以及fw的影响。文中主要基于三种波浪增阻理论计算模型，以肥大型船为研究对象，计算分析典型海况蒲氏六级下的波浪增阻系数的分布规律以及相同收到功率下的航速和fw。结果表明：三个理论模型计算得到的fw均低于模型试验结果；Model-3高估了不规则波中的波浪增阻值；Model-1和Model-2计算得到的fw与模型试验结果较接近。

Influence of Added Wave Resistance Calculation Methods on Ship Speed in Seas

fw is one of the factor in EEDI formula. This paper studies the influence of different added wave resistance calculation methods on ship speed in representative sea condition. The using three theoretical models is realized to calculate the added resistance, and comparing the calculation results with model test. The results from the three models show that all the decrease of ship speed from three theoretical models are higher than the model test results in waves, which lead to lower fw; Model-3 may overestimate the added resistance in irregular wave; the fw obtaining from Model-1 and Model-2 is close to the one from model tests in waves.