淹没条件下环境流速对磨料水射流流场特性的影响

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振动与冲击 ›› 2019, Vol. 38 ›› Issue (8) : 139-144.

论文

杨胜发12，黄岱12，曾施雨3

作者信息 +

Influence of environmental flow velocity on the flow field characteristics of underwater abrasive water jet

YANG Shengfa1,2,HUANG Dai1,2,ZENG Shiyu3

Author information +

文章历史 +

摘要

基于满足连续介质假设的欧拉模型作为磨料水射流的两相流计算模型和Realizable k-ε湍流模型，对不同环境流速条件下淹没状态磨料水射流的流场做出数值模拟，得出磨料水射流的固液两相流态变化。结果表明：环境水流会对淹没状态下磨料水射流造成明显的偏移，流速越大偏移程度越大；通过对射流结构的分段分析，发现能量损耗以及偏移较大的发生部位为射流基本段；通过对水平和垂直分速度的分析，发现速度方向随着环境流速的变大而增大偏移，速度峰值随着环境流速的变大而增大偏移，总速度趋势与垂直分速度趋势保持一致。本文研究可对磨料水射流进行水下作业提供一定的参考。

Abstract

An Eulerian model which satisfies continuous medium hypothesis and a Realizable k-ε turbulence model were used to simulate the two-phase flow state of underwater abrasive water jet under different environmental flow velocities.The result shows: obvious shifting of jet will happen under environmental flow and become greater with growing environmental flow velocity.Through the section analysis, it is found that the main energy loss and jet shifting happen in basic region.Through the analysis of the horizontal and vertical velocities, it is found that the direction and peak value of jet velocity shift greater as environmental flow increase, the trend of the total velocity stay similar to the vertical velocity.This study provides a reference on using abrasive water jet for underwater engineering.

导出引用

杨胜发12，黄岱12，曾施雨3. 淹没条件下环境流速对磨料水射流流场特性的影响[J]. 振动与冲击, 2019, 38(8): 139-144

YANG Shengfa1,2,HUANG Dai1,2,ZENG Shiyu3. Influence of environmental flow velocity on the flow field characteristics of underwater abrasive water jet[J]. Journal of Vibration and Shock, 2019, 38(8): 139-144

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