关键词: 船舶工程, 能效设计指数, 艾尔法, 阻力预报, 航速预报, 数字化验证

Abstract:  In order to promote the implementation of the EEDI of inland waterway ships and the improvement of EEDI level， a fast， efficient， and accurate digital forecasting method for EEDI of inland waterway ships needed to be developed. The paper collected a large number of tank test data samples about inland waterway ships and divided them into two parts. One part samples were used to analyze and improve the Ayre method resistance evaluation and calculation method， based on the research， an improved Ayre method was proposed, which was suitable for the resistance curve estimation and effective power calculation of the wide and flat inland waterway ships with twin-engine double-propeller and large square coefficient. The other part samples were used to verify the improved Ayre method， and the results show that the revised Ayre method has a much more lower forecasting errors than that of the original version from 9.4% to 3.4%， and then the ship speed forecasting method was proposed. Through testing and verification of the collected 32 real ship speeds， the results show that the method has high prediction accuracy with an average error of only 2.678%， which is far lower than the 5% error accepted by the shipowner. Finally， EEDI digital verification software was developed to meet the needs of economic and rapid verification of EEDI， and promote the green and efficient development of inland waterway ships. 

Key words:  , ship engineering, energy efficiency design index（EEDI）, Ayre method, resistance forecast, speed forecast, digital verification