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| Influence of environmental flow velocity on the flow field characteristics of underwater abrasive water jet |
| YANG Shengfa1,2,HUANG Dai1,2,ZENG Shiyu3 |
1. Department of River and Ocean Engineering, Hydraulic Engineering, Chongqing Jiaotong University, Chongqing 400074, China;
2. National Engineering Research Center for Inland Waterway Regulation, Chongqing 400074, China;
3. Chongqing Shipping Engineering Survey and Design Institute of the Yangtze River, Chongqing 401147, China |
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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.
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Received: 31 May 2018
Published: 15 April 2019
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