基于CFD的船舶不同浪向下运动及增阻数值分析

为分析波浪对船舶快速性和耐波性的影响,必须对波浪中航行的船舶阻力增值进行准确预报。本文基于计算流体力学软件FINE/Marine建立了Wigley船模的数值模型,对不同规则波波长下的船体运动和波浪增阻进行了计算,并与试验结果进行对比,验证了数值模型的可行性与准确性。同时计算分析了船舶在规则波中航行时的波浪增阻与浪向之间的变化关系。通过研究发现：随着浪向角的增大船舶波浪增阻逐渐增加,在60°浪向角时波浪增阻达到最大值,浪向角对波浪增阻的影响较大。本文的研究方法可用于船舶有航速下的不同浪向波浪增阻的数值预报。

Numerical Analysis of Added Resistance and Ship Motions in different waves based on CFD

In order to analyze the effect of waves on the speed and resistance of ships, it is necessary to accurately predict the added resistance of ships sailing in waves. In this paper, the Wigley ship numerical model is established through the CFD software package Fine/marine. Based on the computational fluid dynamics software FINE / Marine, this paper established a numerical model of the Wigley ship model, calculated the hull motion and added resistance at different regular waves, and compared with the test results to verify the feasibility and accuracy. At the same time, the relationship between the added resistance and the direction of the wave while the ship is sailing in the regular waves is calculated and analyzed. Through research, it is found that with the increase of the wave direction angle, the ship"s wave resistance increase gradually increases. At 60 ° wave direction angle, the wave resistance increase reaches the maximum value, and the wave direction angle has a greater influence on the wave resistance increase. The research method in this paper can be used for the numerical prediction of the increased resistance of the oblique wave at the speed of the ship.