Investigation of anisotropic dispersion in a discontinuous solid mixer

Investigation of anisotropic dispersion in a discontinuous solid mixer
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不连续固体混合器中各向异性分散的研究

DOI:
10.1016/j.powtec.2014.02.054
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发表时间:
2014
期刊:
影响因子:
5.2
通讯作者:
H. Nirschl
H. Nirschl
中科院分区:
工程技术2区
文献类型:
--
作者:
S. Schmelzle;K. Mohr;V. Wenzel;H. Nirschl

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相似文献

固体混合过程通常用弥散模型来描述。分散是基于颗粒的随机运动,它负责不同组分之间的浓度平衡。为简化起见,混合物的均匀性调整主要用轴向混合方向来描述。在本研究中,将一维弥散模型扩展到三维。改进的采样策略显示了如何将弥散模型应用于轴向、径向和切向的混合过程。对于45°构型的混合工具,轴向和径向混合效率差别不大,而切向混合效率较高。90°配置的行为有所不同。对于不同的混合工具配置,确定了各向异性弥散系数。这表明颗粒在轴向的迁移率最低。
Solid mixing processes are usually described with the help of the dispersion model. Dispersion is based on stochastic particle movements which are responsible for the concentration balance between the different components. For simplification, homogeneity adjustment of the mixture is mostly described by the axial mixing direction. In this research, the one-dimensional dispersion model is extended to three dimensions. A modified sampling strategy shows how the dispersion model can be applied to the mixing process in axial, radial, and tangential directions. Small differences between axial and radial mixing efficiencies are observed for the 45°-configuration of the mixing tool, whereas a higher mixing efficiency is detected in tangential direction. The 90°-configuration behaves differently. Anisotropic dispersion coefficients are determined for the different mixing tool configurations. These indicate that particle mobility in axial direction is lowest.
固体颗粒在配备桨式叶轮的圆柱形罐中的混合
DOI: --
发表时间: 1961
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影响因子: 1.9
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