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风雨182

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[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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1楼 2010-04-18 14:19:49
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lastzealot

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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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2楼2010-04-18 15:05:56
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sammi_deng

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sirljz(金币+2):谢谢交流 2010-04-18 20:35
Figure 4-10 is the instantaneous velocity profile of particle axial and radial directions in the center of the bed under the condition of two sound pressure level (SPL = 100,130 dB). As can be seen clearly from the above chart, sound pressure level has the  significantly influence on the particles' speed. With the sound pressure level increasing, the range of the particle velocity decreases , and the speed becomes more stable. The reason is that with the sound pressure level decreasing, the size of the bubble increases. Because the bubble is the main driving force to the particle motion in a bubble column, when bubble size increases, the driving force of the particle increases as well as the particle velocity, which is shown in Figure 4-10 (a) and (c). When sound pressure level is 130 dB , the particle velocity curves more gently, which is shown in Figure 4-10 (b) and (d).
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3楼2010-04-18 15:10:59
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benmao_mogu

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sirljz(金币+2):谢谢交流 2010-04-18 20:35
Figure 4-10 are two level conditions (= 100,130 dB SPL), bed particle within central axial and radial instantaneous velocity distribution. From above can clearly see that level of particle velocity has obvious effect. With the increase of the level, particle velocity range reduced, speed change trend is smooth. Reason is, with the level of bubble size decreases, increase. Due to the bubble is bubbling bed particle movement within the main impetus, bubble size increases by increasing impetus, particle, particle velocity increasing, as shown in figure 4-10 (a) and (c). Level 130 dB, particle velocity variation curve is gentle, as shown in figure 4-10 (b) and (d).
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4楼2010-04-18 15:19:11
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hecuihuapeng

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sirljz(金币+2):谢谢交流 2010-04-18 20:35
风雨182(金币+15): 2010-04-20 16:04
The axial and lateral instantaneous velocity distribution of the particles in the center of the bed under two given Sound Pressure Levels (SPL=100, 130 dB) is shown in Fig 4_10. As can be vividly seen from the above figure, the effect of SPL on the velocity of particles is quite obvious. The variation range of particle velocity decreases with the increase of SPL, and the velocity change is relatively smooth. This is due to the bubble size increases with decreasing in SPL. The main impetus to the motion of particles in the Babble fluidization bed is generated by the bubbles. Therefore as the increase of the bubble size, the impetus applied to the particles increases and so does the corresponding velocity, as is shown in Fig 4-10 (a) and (c). when the SPL is 130 dB, the velocity of the particles changes gently, just as shown in the curves in Fig 4-10 (b) and (c).
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5楼2010-04-18 15:41:16
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