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长江客货船船模系列试验的主要对象是长江干线双桨客货船。对长江短途区间班轮和船型类似的内河船舶,也可参考使用。其船型参数范围如下: δ:0.52～0.64 L/B:4.6～7.0 B/T:3.6～6.0 文章给出了船型和阻力两套主要图谱。阻力图谱在F_n=0.20～0.32的范围内,以剩余阻力系数C_R形式给出。此外,还给出了当设计船舶的水线面系数和系列船型的水线面系数不同时的型值修正值和阻力修正图谱,以及变化吃水状态的阻力修正曲线。所有阻力图谱均用ITTC相关线计算摩擦阻力。文中也给出了将系列船型的阻力值转换到用柏兰特-许立汀(Prandtl-Schlichting)摩擦公式的转换方法。文章还介绍了系列船型与优良实船以及泰勒(Taylor)系列的阻力比较。最后通过一个计算实例介绍了图谱的使用方法。
The main object of the Changjiang passenger and cargo ship model series test is the sculls passenger and cargo ships along the Yangtze River. On the Yangtze River short-range liner and ship similar to the river vessels, but also for reference. The ship parameters range is as follows: δ: 0.52 ~ 0.64 L / B: 4.6 ~ 7.0 B / T: 3.6 ~ 6.0 The article gives two main maps of ship and resistance. The resistance spectrum is given in the range of F_n = 0.20-0.32 and as the residual resistance coefficient C_R. In addition, the model correction value and the resistance correction map when the waterline coefficient of the design ship and the waterline coefficient of the series of ships are different are also given, and the resistance correction curves of the changing draft are also given. All resistance maps are calculated using the ITTC correlation line frictional resistance. The paper also presents the conversion of the series of hull drag values to the Prandtl-Schlichting friction formula. The article also introduces a series of ship and excellent real ship and Taylor (Taylor) series resistance comparison. Finally, a calculation example is introduced to use the map.