含气空泡出水过程数值模拟研究

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振动与冲击 ›› 2015, Vol. 34 ›› Issue (18) : 106-110.

论文

含气空泡出水过程数值模拟研究

尤天庆1 张耐民1 魏海鹏2 程少华1 赵振军1

作者信息 +

Numerical Research on Water Exit of Air-involved Cavity

You Tianging1 Zhang Naimin1 Wei Haipeng2 Cheng Shaohua1 Zhao Zhenjun1

Author information +

文章历史 +

摘要

含气空泡在出水过程中会发生溃灭，形成较为复杂且剧烈变化的流场。本文首先基于含气理想球形空泡溃灭模型，理论上分析了空泡溃灭特性，而后基于均质多相流模型，对航行体出水过程中含气空泡溃灭现象进行了数值模拟分析。计算分析表明，含气空泡溃灭过程存在回弹现象，会在航行体表面形成冲击载荷，空泡内压提高使空泡尺度增大并且可在一定程度上减小空泡内外压差，缓解由空泡周围流体强烈拍击航行体壁面而产生的压力激励。

Abstract

The cavity mixed with air will collapse during water exit, which leads to the dramatic change of flow field. The cavity collapse property has been analyzed using spherical air-involved bubble model. Then, based on homogenous multiphase flow model, numerical simulation of the cavity collapse filled with air has been conducted. The result shows that the rebound phenomenon will occur in the cavity water exit collapse process, and causing strong impact on vehicle surface. The analysis also presents that cavity inside pressure rising causes the growing of cavity size and reduces the inside and outside pressure difference, which eases the water impact.

导出引用

尤天庆1 张耐民1 魏海鹏2 程少华1 赵振军1. 含气空泡出水过程数值模拟研究[J]. 振动与冲击, 2015, 34(18): 106-110

You Tianging1 Zhang Naimin1 Wei Haipeng2 Cheng Shaohua1 Zhao Zhenjun1. Numerical Research on Water Exit of Air-involved Cavity[J]. Journal of Vibration and Shock, 2015, 34(18): 106-110

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