应用数学和力学2025，Vol.46Issue(7)：882-892,11.DOI:10.21656/1000-0887.450202
相变颗粒转鼓中非满充颗粒休止角实验研究
Experimental Study on the Dynamic Angles of Repose of Non-Fully Filled Phase Change Particles in a Rotating Drum
摘要
Abstract
Spherical particles non-filled with water as the phase change material were fabricated.A rotating drum experimental setup was built.the influences of the motion of the phase interface inside the particles on the dynamic angles of repose of the particles in the rotating drum were investigated with varying particle diame-ters,volume fractions of the phase change material inside the particles,filling ratios of the rotating drum,and rotation speeds.The dynamic angle of repose was obtained through image capture and the MATLAB image pro-cessing.The results indicate that,the motion of the phase interface can cause some particles to slip,enhancing particle flowability and resulting in a fluctuating change in the resting angle with an increasing rotational speed.As the volume fraction increases,the flowability of the particles will improve,and the resting angle will de-crease,while the effect of the rotational speed on the particles will gradually diminish.Furthermore,as the fill-ing rate decreases and the particle size increases,the dynamic resting angle of the particle bed layer will de-crease,the particle flow capacity will heighten,and the particle bed layer will be more susceptible to the phase interface motion.关键词
动态休止角/非满充颗粒/体积含量/相界面Key words
dynamic angle of repose/non-fully filled particle/volume fraction/phase interface分类
信息技术与安全科学引用本文复制引用
李佳鹏,齐晓霓,屈晓航..相变颗粒转鼓中非满充颗粒休止角实验研究[J].应用数学和力学,2025,46(7):882-892,11.基金项目
国家自然科学基金(52276157) （52276157）
山东省优秀青年科学基金(ZR2023YQ048) （ZR2023YQ048）
