采用泵喷补偿技术的近底拖体水压场数值模拟研究

Numerical Simulation of Hydraulic Pressure Field of Near-bottom Towed Body Using Pump Spray Compensation Technology

摘要:

采用标准 k-ε 模型，结合 Fluent 软件，对采用泵喷补偿技术的拖体水下被拖行运动所产生的压力场变化进行了数值模拟实验。结果表明：采用泵喷补偿技术对拖体水压场的“马鞍形”分布特性影响较小， 但随着喷水速度的增加，拖体首端压力负值略有增加，而中段的负峰幅值显著增加，当喷水速度达到一定值后，拖体的压力特性曲线已经较为接近期望值，证明泵喷补偿技术具有一定的可行性。

关键词:泵喷技术;近底拖体;水压场;数值模拟

Abstract:

In this paper，by using standard k-ε model and Fluent software，numerical simulation experiments are carried out to simulate the changes of pressure field generated by the underwater towing motion of a towed body using pump spray compensation technology. The results show that the use of pump spray compensation technology has little influence on the saddle-shaped distribution characteristics of the water pressure field of the towed body，but with the increase of the water spraying speed，the negative pressure at the head of the towed body increases slightly， while the negative peak amplitude in the middle section increases significantly. When water spraying speed reaches a certain value，the pressure characteristic curve of the towed body is close to the expected value，which proves that the pump spray compensation technology is feasible.

Key words:pump spray technology;near-bottom towed body;hydraulic pressure field;numerical simulation