新虫 (著名写手)
【乱世的奸雄】 ![]()
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sirljz(金币+2):谢谢交流 2010-04-18 20:35
风雨182(金币+15, 翻译EPI+1):谢谢你 2010-04-20 16:04
Figure 4-10 shows the distribution of the axial and radical transient rate of particles in the center of the bed under the confitions of both SPL=100 and 130 dB. It is clearly observed from the graph that the sound pressure level has a significant influence on the particle rate. As the sound pressure level increases, the range of particle rate decreases, and the relative variation trend turns to be stable. The reason for this is that bubble size increases with the decrease of the sound pressure level. Bubbles are the main driving forces of particle movement in the bed. Therefore, the sizes of them increase, the driving forces increase and particle rate increases as a result, which could be seen in Figure 4-10 a and c. When sound pressure level is 130 dB, the curves of particle size variation is relatively gentle, seen in Figure 4-10 b and d.
[ Last edited by lastzealot on 2010-4-18 at 15:17 ] |
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