基于RANS方程的船模兴波阻力分离计算方法及其适用范围研究

Study on separating calculation method for ship model wave resistance based on RANS equation and its availability

运用空气—水两相流RANS方程计算了两型船模的粘性兴波流场,提出了兴波阻力的分离计算方法,并研究了该方法的适用范围。结果表明,在长度傅汝德数低于0.4时,文中对船模兴波阻力及波高的计算结果都与模型试验基本相符,但当长度傅汝德数高于0.4时,计算结果与试验还存在一定的差距。

The free surface viscous flow of two kinds of ship models is calculated by air-water two phase RANS equation. The separating calculation method for wave resistance is presented, and its availability is studied. It is shown that if the Froude number is lower than 0.4, the calculation results of the wave resistance and wave height are basically coincident with the experimental data, while the Froude number is higher than 0.4, there has some difference between the results of the calculation and experiment.