| 湍流中粒子－流体间的传质 |
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| 引用本文： | 蒋新,陈甘棠,李希. 湍流中粒子－流体间的传质[J]. 高校化学工程学报, 1996, 0(3) |
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| 作者姓名： | 蒋新 陈甘棠 李希 |
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| 作者单位： | 浙江大学化工系联合所 |
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| 摘 要： | 通过对已有各种两相湍流传质理论的剖析，指出颗粒与流体间相对速度的大小是确定传质系数的关键。通过分析湍流场中粒子的运动，认为在不同尺度涡旋中，液固间的相对速度是不同的，传质系数也不相同，提出用能谱加权的方法求取总传质系数。以此为基础得到的模型与本文及文献中不同体系的实验结果比较后发现，在流速、粒径、粒子密度、温度、浓度、管径等条件变化较大的情况下，模型均能较好地预测传质系数的变化规律
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| 关 键 词： | 传质 湍流 管式反应器 |
Particle/Fluid Mass Transfer in Turbulence |
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| Jiang Xin Chen Gantang Li Xi. Particle/Fluid Mass Transfer in Turbulence[J]. Journal of Chemical Engineering of Chinese Universities, 1996, 0(3) |
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| Authors: | Jiang Xin Chen Gantang Li Xi |
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| Abstract: | A model for particle/fluid relative vlocity and mass transfer coefficient in turbulence was proposed on the basis of the BBO equation. Mass transfer coefficients were measured for ion exchange resin particles in solution of calcium chloride in a horizontl pipeline. The theoretical curves fit well with the experimental data both in this paper and in literature under different conditions. Especially, the model includes merits of both Kolmogoroff theory, in which the effect of turbulent energy can be explained, and slip velocity theory, in which the density difference between particle and fluid is correlated. |
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| Keywords: | Mass transfer Turbulence Tubular reactor |
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