目的 分析柔性生物质颗粒的应用背景，提出生物质的清洁度与取向分布是影响产品包装质量的2个关键因素。方法 从多相流的数值模拟方法、柔性颗粒建模理论、曳力模型适用性等角度总结国内外生物质流化研究成果。重点阐述本课题组在生物质表征、生物质分离与取向调控方面提出的解决方案。结果 机器视觉适用于生物质物理与力学性能的测量，多倾斜曲面通道可用于混合颗粒的有效分离，楔形通道的流场速度梯度能够加速非球形颗粒的取向调整。结论 概括了柔性生物质颗粒流化模拟中存在的主要问题，提出了未来的研究计划。

The work aims to analyze the application background of flexible biomass particles and propose two key factors (cleanliness and orientation distribution of biomass) affecting product packaging quality. The research achievements of biomass fluidization were summarized from the perspectives of numerical simulation methods, flexible particle modeling theory, and the applicability of the drag model. The solutions proposed by the research group in biomass characterization, biomass separation and orientation control were described. Machine vision technology was suitable for the measurement of physical and mechanical properties of biomass. Multi-inclined curved channels can be used for effective separation of mixed particles. The flow velocity gradient of the wedge-shaped channel can accelerate the orientation adjustment of non-spherical particles. The main problems in numerical simulation of biomass fluidization are summarized and future research plans are proposed.