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Updated: Sep 17, 2025
14:23
Design and Optimization Strategies of a High-Performance Vented Box
Published on: June 9, 2023
1.2K
Numerical simulation of ventilated supercavitating flow structure.
Jinghui Zhang1, Weiye Chen2, Peng Li1
1China Ship Scientific Research Center, National Key Laboratory Of Hydrodynamics, Wuxi, 214000, China.
Scientific Reports
|July 1, 2025
Summary
This study numerically investigates supercavitating flow, revealing tail fins optimize gas leakage by suppressing backflow. Parameters like ventilation rate and cavitator angle significantly influence cavity structure and vehicle performance.
Area of Science:
- Fluid Dynamics
- Hydrodynamics
- Computational Fluid Dynamics
Background:
- Supercavitation enables high-speed underwater vehicle operation by creating a gas-filled cavity.
- Understanding factors influencing supercavity structure is crucial for vehicle design and performance optimization.
Purpose of the Study:
- To numerically investigate the effects of various parameters on supercavitating flow field structure.
- To analyze the influence of cavitator rudder angle, diameter, aft-body shape, angle of attack, and tail fins on supercavity morphology.
Main Methods:
- Delayed Detached Eddy Simulation (DES) method was employed for detailed analysis.
- Numerical model reliability was validated against experimental data.
Main Results:
- Cavity expansion rate is highly dependent on ventilation coefficient, with a notable change in behavior beyond a coefficient of 2.4.
- Cavitator rudder angle alters cavity cross-section to an elliptical shape, impacting internal gas flow.
- Tail fins suppress backflow, enlarge gas leakage area, reduce internal cavity pressure, and decrease cavity size.
Conclusions:
- Tail fins are key in optimizing supercavity ventilation characteristics by mitigating internal backflow.
- Parameter variations significantly affect supercavity morphology and flow dynamics, offering insights for vehicle design.
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