Numerical Simulation on Flow Field Characteristics of Vehicle Planing

LIU Fu-qiang; SUN Yuan; WANG Guang-ping; WANG Xue-feng

doi:10.11993/j.issn.2096-3920.202107003

Volume 30 Issue 4

Sep 2022

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Article Navigation > Journal of Unmanned Undersea Systems > 2022 > 30(4): 485-493

LIU Fu-qiang, SUN Yuan, WANG Guang-ping, WANG Xue-feng. Numerical Simulation on Flow Field Characteristics of Vehicle Planing[J]. Journal of Unmanned Undersea Systems, 2022, 30(4): 485-493. doi: 10.11993/j.issn.2096-3920.202107003

Citation:

LIU Fu-qiang, SUN Yuan, WANG Guang-ping, WANG Xue-feng. Numerical Simulation on Flow Field Characteristics of Vehicle Planing[J]. Journal of Unmanned Undersea Systems, 2022, 30(4): 485-493. doi: 10.11993/j.issn.2096-3920.202107003

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Numerical Simulation on Flow Field Characteristics of Vehicle Planing

doi: 10.11993/j.issn.2096-3920.202107003

The 705 Research Institute, China State Shipbuilding Corporation Limited, Xi’an 710077, China

Received Date: 2021-07-07
Rev Recd Date: 2021-10-11

Available Online: 2022-09-06

Abstract

Abstract

This study employed the shear stress transport(SST) k-ω turbulence model and used the volume of fluid(VOF) wave and the multiple reference frame(MRF) model motion reference system to construct a numerical simulation model of vehicle planing implemented in STAR-CCM+ numerical simulation software, whereby its feasibility was verified. This model was then used to numerically simulate the planing conditions of a vehicle at different speeds and to study its flow field and hydrodynamic characteristics. The simulation results show that when the planing speed of the vehicle was higher than 30 m/s, cavitation occurs at the tail end of the vehicle. This results in the pressure inside the cavity being lower than the pressure on the wetted surface of the tail, causing the cavity to deform and the liquid level to curl up towards the tail, resulting in splashes. Subsequently, a closed cavity is formed at the tail, and there is an inner flow around the cavity, within which there is a low-pressure area. At this time, the lift on the vehicle is negative. When the speed increases, the cavity collapses and joins the atmosphere, and the lift is significantly increased. When the vehicle planes at different speeds, the flow field is obviously different, so are the lift coefficient and the drag coefficient; the lift even turns negative. This is mainly due to the difference in the wetting distribution and surface pressure distribution of the vehicle, caused by different cavitation effects at the tail of the vehicle at different speeds. The results can provide a theoretical reference for engineering applications of vehicle planing.
- planing,
- flow field characteristics,
- hydrodynamic characteristics

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References(20)

References

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