Page 12 - 《应用声学》2020年第3期
P. 12

332                                                                                  2020 年 5 月


                 v/(mSs -1 )                           p/kPa   v/(mSs -1 )                           p/kPa
                                                       12000                                         12000
                   300                                           300
                                                       11000                                         11000
                   280                                           280
                                                       10000                                         10000
                   260                                           260
                                                       9000                                          9000
                   240                                           240
                                                       8000                                          8000
                   220                                           220
                                                       7000                                          7000
                   200                                           200
                                                       6000                                          6000
                   180                                           180
                                                       5000                                          5000
                   160                                           160
                                                       4000                                          4000
                   140                                           140
                                                       3000                                          3000
                   120                                           120
                                                       2000                                          2000
                   100                                           100
                                                       1000                                          1000
                   80                                            80
                                                       800                                           800
                   60                                            60
                                                       50                                            50
                   40                                            40
                   20                                  10        20                                  10
                                 (a) t=3.450 µs                                                                        (b) t=3.620 µs
                 v/(mSs -1 )                           p/kPa   v/(mSs -1 )                           p/kPa
                                                       12000                                         12000
                   300                                           300
                                                       11000                                         11000
                   280                                           280
                                                       10000                                         10000
                   260                                           260
                                                       9000                                          9000
                   240                                           240
                                                       8000                                          8000
                   220                                           220
                   200                                 7000      200                                 7000
                   180                                 6000      180                                 6000
                   160                                 5000      160                                 5000
                   140                                 4000      140                                 4000
                   120                                 3000      120                                 3000
                   100                                 2000      100                                 2000
                   80                                  1000      80                                  1000
                   60                                  800       60                                  800
                   40                                  50        40                                  50
                   20                                  10        20                                  10
                                 (c) t=3.725 µs                                                                         (d) t=3.845 µs
                 v/(mSs -1 )                           p/kPa   v/(mSs -1 )                           p/kPa
                                                       12000                                         12000
                   300                                           300
                                                       11000                                         11000
                   280                                           280
                                                       10000                                         10000
                   260                                           260
                                                       9000                                          9000
                   240                                           240
                   220                                 8000      220                                 8000
                   200                                 7000      200                                 7000
                   180                                 6000      180                                 6000
                   160                                 5000      160                                 5000
                   140                                 4000      140                                 4000
                   120                                 3000      120                                 3000
                   100                                 2000      100                                 2000
                   80                                  1000      80                                  1000
                   60                                  800       60                                  800
                   40                                  50        40                                  50
                   20                                  10        20                                  10
                                 (e) t=12.26 µs                                                                        (f) t=21.3 µs
                 v/(mSs -1 )                           p/kPa   v/(mSs -1 )                           p/kPa
                                                       12000                                         12000
                   300                                           300
                                                       11000                                         11000
                   280                                           280
                                                       10000                                         10000
                   260                                           260
                                                       9000                                          9000
                   240                                           240
                                                       8000                                          8000
                   220                                           220
                                                       7000                                          7000
                   200                                           200
                                                       6000                                          6000
                   180                                           180
                                                       5000                                          5000
                   160                                           160
                                                       4000                                          4000
                   140                                           140
                   120                                 3000      120                                 3000
                   100                                 2000      100                                 2000
                   80                                  1000      80                                  1000
                   60                                  800       60                                  800
                   40                                  50        40                                  50
                   20                                  10        20                                  10
                                 (g) t=28.6 µs                                                                        (h) t=35.6 µs
                            图 3  超声近壁微气泡溃灭过程,R 0 = 100 µm,f = 30 kHz,p d = 300 kPa,γ = 1.3
                 Fig. 3 Ultrasound near-wall microbubble collapse process, R 0 = 100 µm, f = 30 kHz, p d = 300 kPa, γ = 1.3
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