Research Article
Near-Field Measurements of Water-Entry Sound of Low-Speed Metal Balls in a Non-Anechoic Tank
Table 4
Water-entry sound energy for each entry velocity.
| | Entry velocity (m/s) | Kinetic energy (J) | Initial impact sound energy (J) | Initial impact energy conversion rate (%) | Pulsating-bubble sound energy (J) | Pulsating-bubble sound energy conversion rate (%) |
| | 5.89 | 0.2937 | 2.78 × 10−10 | 9.46 × 10−8 | 1.87 × 10−6 | 6.37 × 10−4 | | 6.37 | 0.3435 | 3.31 × 10−10 | 9.62 × 10−8 | 2.57 × 10−6 | 7.47 × 10−4 | | 6.82 | 0.3933 | 3.96 × 10−10 | 1.01 × 10−7 | 3.42 × 10−6 | 8.71 × 10−4 | | 7.14 | 0.4315 | 4.46 × 10−10 | 1.03 × 10−7 | 4.23 × 10−6 | 9.81 × 10−4 | | 7.54 | 0.4813 | 5.23 × 10−10 | 1.09 × 10−7 | 5.47 × 10−6 | 1.14 × 10−3 |
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