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风雨182

木虫 (正式写手)

[交流] 求助翻译一点点

图4-10是两种声压级条件下(SPL=100,130 dB),床内中心区颗粒轴向和径向瞬时速度分布图。由上图可清楚地看出,声压级对颗粒速度有明显影响作用。随声压级的增大,颗粒速度变化范围减小,速度变化趋势较平稳。原因是,随声压级的减小,气泡尺寸增大。由于气泡是鼓泡床内颗粒运动的主要推动力,气泡尺寸增大,颗粒受到的推动力增大,颗粒速度增大,如图4-10(a)和(c)。声压级为130 dB时,颗粒速度变化曲线较平缓,如图4-10(b)和(d)。
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lastzealot

新虫 (著名写手)

【乱世的奸雄】

★ ★
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 ]
2楼2010-04-18 15:05:56
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