Influence of attack angle on ventilated supercavitating flow at high Froude number condition

Q3 Engineering 西北工业大学学报 Pub Date : 2022-12-01 DOI:10.1051/jnwpu/20224061233
Yifei Wang, J. Dang, Chuang Huang, Haiyu Xu, Z. Zuo
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Abstract

To study the influence of attack angle on ventilated supercavitating flow, a numerical model is established to simulate the supercavitation flow by using the inhomogeneous multiphase flow model and the SST k-ω turbulence model. And then, the model is verified and validated by comparing with the experimental results. The effect of attack angle on the profile of ventilated supercavity was numerically investigated over high Froude number. Results show that the attack angle causes the linear deviation of the ventilated supercavity axis, the deviation angle is in direct proportion to the attack angle, the deviation direction is opposite to the lift of the cavitator, and the deformation of the supercavity contour increases along the flow direction. The attack angle changes the gas flow structure inside the ventilated supercavity, causing the different deformation of the upper profile and lower profile. Under the condition of positive attack angle, the deformation of the lower profile of the supercavity generated by the disk cavitator is significantly greater than that of the upper profile.
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高弗劳德数条件下攻角对通气超空泡流动的影响
为了研究攻角对通风超空泡流的影响,利用非均匀多相流模型和SST k-ω湍流模型建立了超空泡流数值模型。然后,通过与实验结果的比较,对模型进行了验证。数值研究了在高弗劳德数下攻角对通风超空泡外形的影响。结果表明,攻角导致通风超空泡轴线的线性偏差,偏差角与攻角成正比,偏差方向与空化器的升力相反,超空泡轮廓的变形沿流动方向增加。攻角改变了通风超空泡内部的气流结构,导致上下型面变形不同。在正攻角条件下,圆盘空化器产生的超空泡下部轮廓的变形明显大于上部轮廓的变形。
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来源期刊
西北工业大学学报
西北工业大学学报 Engineering-Engineering (all)
CiteScore
1.30
自引率
0.00%
发文量
6201
审稿时长
12 weeks
期刊介绍:
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