单体高速船截流板减阻的浅水特性分析

卜家斌; 秦江涛; 马健; 秦安阳; 李子如

doi:10.19693/j.issn.1673-3185.03296

单体高速船截流板减阻的浅水特性分析

Analysis of drag reduction characteristics of single high-speed ship interceptor in shallow water

摘要

摘要:
目的为探究水深对截流板减阻效果及最佳减阻高度的影响，基于RANS方程组数值求解的方法，对加装不同高度截流板的单体高速船进行深浅水绕流场数值模拟。
方法首先，以DTMB 5415光体高速船为研究对象进行数值方法的有效性验证与不确定度分析；然后，对不同截流板高度与水深工况下的某高速单体船进行绕流场数值模拟；最后，基于数值结果分析不同工况的阻力、航态及流场特性。
结果研究表明，截流板的减阻效果存在明显的浅水效应；最佳减阻高度随水深变化基本不变，截流板对纵倾角度的降低也基本不随水深的变化而改变；截流板有一定降低船后兴波的作用，但随着水深的减小，该作用效果会减弱。
结论所做研究对截流板在浅水中的应用具有一定的参考价值。

Abstract:
Objectives To explore the influence of water depth on the drag reduction effect and the optimal drag reduction height of the interceptor. Based on the numerical solution approach of RANS equations, the flow field around a single high-speed ship with various height interceptors is numerically simulated.
Methods Firstly, the validity of the numerical method is verified by the DTMB5415 high-speed ship. Then, the flow field around a high-speed monohull ship is numerically simulated under different interceptor heights and water depths. Based on the numerical results, the resistance, navigation state, and flow field characteristics of different working conditions are analyzed.
Results The results show that the drag reduction effect of the interceptor has an obvious shallow water effect; the optimal drag reduction height is unchanged with the change of water depth, and the reduction of the trim angle of the interceptor is unchanged with the change of water depth. The interceptor has a certain effect on reducing the wave-making behind the ship, but the effect decreases with the decrease of water depth.
Conclusions The research content has certain practical reference values for the application of the interceptor in shallow water.

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