渔业现代化2026，Vol.53Issue(2)：107-116,10.DOI:10.26958/j.cnki.1007-9580.2026.02.011
基于CFD-DEM方法的弯管内柱状饲料水力输送破碎特性研究
Study on the breakage characteristics of cylindrical feed in hydraulic conveying through bent pipes via CFD-DEM method
摘要
Abstract
To address the issue of feed breakage during hydraulic conveying in aquaculture that affects feeding efficiency and water environment.This study employs a CFD-DEM coupled method to develop a solid-liquid two-phase flow model for particle breakage.The research thoroughly investigates the breakage behavior of cylindrical feed particles within curved pipes during hydraulic conveying,with a particular focus on breakage types,fragment size distribution,and mechanisms of energy transformation and dissipation.The results indicate that feed particle breakage primarily manifests as surface peeling,occurring progressively under shear stress rather than via complete fracture.The size distribution of breakage products exhibits a bimodal pattern:large fragments retain the size of the parent particles,whereas small fragments are numerous but contribute relatively little to total mass.Energy dissipation is especially pronounced during collision-induced breakage,with up to 45.2％of energy lost during the initial breakage event,mainly due to the conversion of translational kinetic energy into internal and rotational kinetic energy.This study systematically reveals the breakage behavior of feed particles during hydraulic conveying from three perspectives-microscopic mechanisms,characteristics of breakage products,and energy transformation-providing a theoretical basis for optimizing hydraulic conveying processes to reduce particle breakage.关键词
柱状饲料/破碎特性/CFD-DEM/水力输送Key words
cylindrical feed/breakage characteristics/CFD-DEM/hydraulic conveying分类
农业科技引用本文复制引用
陈圆,刘金鑫,扈喆,张晓莹..基于CFD-DEM方法的弯管内柱状饲料水力输送破碎特性研究[J].渔业现代化,2026,53(2):107-116,10.基金项目
国家自然科学基金面上项目(52371321) （52371321）
福建省促进海洋与渔业产业高质量发展专项资金项目(FJHYF-L-2025-23) （FJHYF-L-2025-23）
