Simulation and Experiment on Elimination for the Bottom-Sitting Adsorption Effect of a Submersible Based on a Submerged Jet
Abstract
:1. Introduction
2. Methods
2.1. Analysis of the Bottom-Sitting Adsorption Effect
2.2. Turbulent Flow Calculation Model and Jet Pattern
2.3. Soil Liquefaction Law and Soil Rheology Calculation Model
3. Calculation and Analysis
3.1. Two-Dimensional Water Jet Calculation Model
3.2. Continuous Jet Calculation of a Two-Dimensional Water Jet
3.3. Pulsed Jet Calculation of a Two-Dimensional Water Jet
3.4. Calculation and Analysis of a Three-Dimensional Water Jet
4. Experiment
4.1. Experiment Design and Test Preparation
4.2. Experimental Results
5. Result and Discussion
- (1)
- The water film thickness was 5 cm, and the liquefied soil thickness was 12 cm, which was based on the continuous jet.
- (2)
- The water film thickness was 6.5 cm, and the liquefied soil thickness was 7 cm, which was based on the sinusoidal pulsed jet.
- (3)
- The water film thickness was 9 cm, and the liquefied soil thickness was 13.6 cm, which was based on the rectangular pulsed jet.
6. Conclusions
- (1)
- The analysis method and experimental scheme for eliminating the bottom-sitting adsorption effect of under-sea equipment were established.
- (2)
- The calculation shows that the pulsed jet had a stronger ability to liquefy soil to eliminate the adsorption effect than the continuous jet. And a rectangular pulsed jet may be the best way.
- (3)
- By carrying out the water jet experiment of the bottom sitting adsorption effect of the submersible box, it was verified that the horizontal line jet could restore the buoyancy of the submersible box. And the jet velocity and weight–floating ratio were key control parameters. This physical phenomenon could further guide future research work on the self-rescue of under-sea equipment.
Author Contributions
Funding
Data Availability Statement
Acknowledgments
Conflicts of Interest
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(Pa·s) | n | (Pa) | (s−1) |
---|---|---|---|
612 | 0.1 | 1300 | 0.001 |
Weight–Floating Ratio | Jet Velocity (m/s) | Average Maximum Reaction Force (N) | Standard Deviation |
---|---|---|---|
0.375 | 0.65 | 355.07 | ±23.94 |
0.375 | 0.67 | 318.02 | ±25.44 |
0.375 | 0.82 | 433.35 | ±23.87 |
0.625 | 0.65 | 135.73 | ±7.73 |
0.625 | 0.67 | 154.75 | ±10.59 |
0.625 | 0.82 | 153.53 | ±8.89 |
0.875 | 0.65 | 48.02 | ±1.61 |
0.875 | 0.67 | 43.84 | ±2.31 |
0.875 | 0.82 | 43.27 | ±1.38 |
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Zhang, H.; Ye, C.; Gong, P.; Xu, F.; Zhang, D.; Cong, S.; Liu, S. Simulation and Experiment on Elimination for the Bottom-Sitting Adsorption Effect of a Submersible Based on a Submerged Jet. Processes 2023, 11, 3452. https://doi.org/10.3390/pr11123452
Zhang H, Ye C, Gong P, Xu F, Zhang D, Cong S, Liu S. Simulation and Experiment on Elimination for the Bottom-Sitting Adsorption Effect of a Submersible Based on a Submerged Jet. Processes. 2023; 11(12):3452. https://doi.org/10.3390/pr11123452
Chicago/Turabian StyleZhang, Hao, Cong Ye, Peng Gong, Fengwei Xu, Dongjing Zhang, Shuguang Cong, and Shuai Liu. 2023. "Simulation and Experiment on Elimination for the Bottom-Sitting Adsorption Effect of a Submersible Based on a Submerged Jet" Processes 11, no. 12: 3452. https://doi.org/10.3390/pr11123452