摘要
对泊肃叶流下中性浮力颗粒横向迁移相关实验和数值模拟研究进行归纳和评述,发现目前对颗粒横向迁移行为的认识仍存在争议,对横向迁移内在机理研究还不够深入。鉴于直接力/虚拟区域数值模拟方法在液固两相流精准模拟中的优势,采用该方法对圆管内泊肃叶流下单个颗粒的横向迁移进行模拟再现;据此指出在今后的研究中应基于直接力/虚拟区域方法开展研究,以全面识别颗粒横向迁移的动力学行为,并揭示其内在机理。
The progress of relevant experimental and numerical studies on the lateral migration of neutrally buoyant particles in the Poiseuille flow were summarized and reviewed.It is found that the understanding about the behaviors of the lateral migration of particles is controversial and that the underlying mechanism of the lateral migration is still not well understood.Taking the advantages of the direct-forcing fictitious domain(DF/FD)method in accurately simulating the liquid-solid two-phase flow,the DF/FD method was used to numerically reproduce the lateral migration of a single particle under the Poiseuille flow condition in a circular pipe.On this basis,it is proposed that in future work,the DF/FD method should be used to comprehensively identify the dynamic behaviors of lateral migration of particles and to reveal the underlying mechanism of lateral migration.
作者
叶挺
凡凤仙
YE Ting;FAN Fengxian(School of Energy and Power Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China)
出处
《上海理工大学学报》
CAS
CSCD
北大核心
2021年第2期118-126,共9页
Journal of University of Shanghai For Science and Technology
基金
国家自然科学基金资助项目(51976130)
上海市科委科研计划(13DZ2260900)。
关键词
泊肃叶流
中性浮力颗粒
横向迁移
液固两相流
直接力/虚拟区域方法
Poiseuille flow
neutrally buoyant particle
lateral migration
liquid-solid two-phase flow
direct-forcing fictitious domain(DF/FD)method
