浅水中船体操纵水动力导数计算方法的改进

Improvement on Calculating Method of Ship Hydrodynamic Derivatives in Shallow Water

本文针对一般估算浅水中船体水动力导致的理论计算偏于保守的问题,提出了简便的改进方法,指出船舶操纵运动,特别是变船速下计算水动力导致时应考虑船体下沉。文章将修正值与试验值进行比较,两者吻合的程度有改善的趋势。

At present,methods of calculating ship hydrodynamic derivatives in shallow water are more or less conservative. This paper gives a simple method to improve the calculation. It poins out that the ship sinkage in shallow water should be considered when calculating hydrodynamic derivatives under maneuvering,especially under condition when the ship' s speed is changing. the improved value is more according with the experimental results.