| 薛壮壮， 王企鲲.颗粒惯性聚集现象的数值优化方法[J].轻工机械,2019,37(3):26-30 |
| 颗粒惯性聚集现象的数值优化方法 |
| Numerical Optimization Method of Inertial Focus of Particles |
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| DOI：10.3969/j.issn.1005 2895.2019.03.005 |
| 中文关键词: 微通道 悬浮颗粒 惯性聚集 惯性升力 割线法 CFD |
| 英文关键词:microchannel suspended particles inertial focus of particles inertial lift secant method CFD |
| 基金项目:国家教育部博士点基金资助项目（20113120120003） |
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| 中文摘要: |
| 为研究微通道内悬浮颗粒的惯性聚集现象，基于“运动相对性”原理，运用数值方法对颗粒在聚集过程中所受的惯性升力进
行计算。利用相对运动模型进行计算时，其关键点在于对所需计算的横向位置处的颗粒沿主流方向的稳定运动速度的确定；通过“试凑法”对其进行近似确定，采
用二分法、割线法和抛物线法等方法在相同条件下进行试凑计算。比较上述方法在试凑颗粒稳定状态下平动速度和转动角速度的难易程度，结果表明“割线法”在
试凑过程中具有明显的优势，该算法求解颗粒平动速度和转动角速度时快速、高效及可靠。 |
| 英文摘要: |
| In order to study the phenomenon of inertial focus of particles in microchannel，based on the principle of motion relativity，the numerical method
was used to calculate the inertial lift of the particles during the aggregation process. By using the relative motion for calculation，the key point was the determination of the steady motion
velocity of the particles in the direction of the main flow at the required lateral position.In this paper，the method was approximated by trial and error method，and the methods such as
dichotomy，secant line and parabola were used for trial and error calculation under the same conditions.The results show that the secant method has obvious advantages in the process of
trial and assembly.The algorithm is faster，more efficient and more reliable in solving the translational and rotational angular velocities of particles. |
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