Table 1.
Structure Parameter/mm | Outer Diameter of the Air Chamber b1 | Interval c1 | Inner Diameter of the Air Chamber t1 | Thickness of Restricted Layer h1 | Length L1 |
---|---|---|---|---|---|
Plan a | 3 | 1 | 1 | 1 | 7 |
Plan b | 3 | 1 | 2 | 1 | 7 |
Plan c | 3 | 1 | 0.5 | 1 | 7 |
Plan d | 3 | 2 | 1 | 1 | 8 |
Plan e | 3 | 3 | 1 | 1 | 9 |
Plan f | 3 | 1 | 1 | 0.5 | 7 |
Plan g | 3 | 1 | 1 | 2 | 7 |