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为了研究SFS2的舰船空气流场特性,分别利用N-S方程和MILES方法对SFS2空气流场进行数值模拟,其中RANS方程的求解中应用了SA湍流模型,并与风洞试验结果进行对比。计算结果表明,SA和MILES模型均能得到与风洞试验变化规律相同的时均流场结果,但MILES对尾流场的预测精度相对更高,且能得到空气流场的瞬时特性,用于更精确地分析舰船空气流场。研究表明,当改变两种计算模型来流速度时,流动结构基本一致,船体表面压力系数分布几乎一致。
In order to study the characteristics of the SFS2 ship’s air flow field, the SFS2 air flow field is numerically simulated by the N-S equation and the MILES method respectively. The SA turbulence model is applied to solve the RANS equation and compared with the wind tunnel test results. The calculated results show that both the SA and MILES models can obtain the same mean-time flow field results as the wind tunnel test. However, the prediction accuracy of MILES for the wake field is relatively higher and the transient characteristics of the air flow field can be obtained. More accurate analysis of ship air flow field. The research shows that the flow structure is basically the same when the two calculation models are changed to flow velocity, and the pressure coefficient distribution on the hull surface is almost the same.