摘要
论文基于非稳态条件下的多相流模型,采用Fluent软件对水下航行体模型水下运动时自然空化以及声场特性进行了数值模拟。数值模拟结果表明:模型所受压差阻力与航行速度的平方正相关,而粘性阻力则因为自然空化的发生呈现先增大后减小又增大的复杂变化趋势;空化现象形成于模型头肩部,随着速度的不断增大逐渐向后发展成超空泡,空泡形状在长度上的变化大于厚度变化;超空泡现象发生时模型尾部声压级相对降低。
Basesd on the Mixture multi-phase fluid model in unsteady conditions, numerical simulations of the natural cavitating and a- coustic characteristics of torpedo model are carried out with Fluent. The simulation results show that the pressure drag of the model has a positive relationship with the square of velocity while the viscous drag has a complex relationshape with the vlocity. Cavitating phenomenon formats on the head of the model and then expands to supercavitation. Meanwhile, the length of cavity changes variously than the thickness. When the supercavitation appears, the noise level of the model will reduce.
出处
《舰船电子工程》
2013年第11期65-67,76,共4页
Ship Electronic Engineering
作者简介
黄鹏飞,男,硕士研究生,研究方向：计算流体力学的军事应用.｜
孙鹤泉,男,博士,副教授,硕士生导师,研究方向：摇杆技术与应用.
