Study on the particle dynamic characteristics in a centrifugal pump based on an improved computational fluid dynamics-discrete element model

机械 计算流体力学 离散元法 物理 湍流 消散 CFD-DEM公司 耗散颗粒动力学模拟 粒子(生态学) 热力学 核磁共振 海洋学 地质学 聚合物
作者
Wei Pu,Leilei Ji,Wei Li,Weidong Shi,Fei Tian,Cui Xiao,Qiaoyue Yang,Yang Yang,Ramesh K. Agarwal
出处
期刊:Physics of Fluids [American Institute of Physics]
卷期号:36 (12)
标识
DOI:10.1063/5.0242078
摘要

To accurately investigate the solid–liquid flow mechanisms within the pump, this study employs an improved Computational Fluid Dynamics-Discrete Element Method (CFD-DEM) approach to examine the solid–liquid interactions in a centrifugal pump. First, the improved CFD-DEM is introduced, focusing on turbulence dissipation near the wall and velocity reconstruction. Then, a comparison is made between the CFD-DEM's performance before and after the enhancements. Finally, an analysis is conducted on how the dynamic characteristics of particles within the pump vary under different solid phase concentration conditions. The study revealed that the particle distribution from the corrected CFD-DEM aligns more closely with the experimental results. At a 2% concentration under the design conditions, the head error was reduced by 0.476%, while the efficiency error decreased by 0.076%. Additionally, as the solid phase concentration increased, there was a corresponding rise in the impact power loss of the particles, dissipative power loss, collision frequency, peak values of particle collisions, and the degree of overlap during these collisions. The comparison revealed that the pressure gradient force has the most significant impact on particle motion. As the pressure gradient force increases, the shear power dissipation of the particles also rises. For solid phase concentrations ranging from 1% to 4%, the average shear power variation during the computation period is between 4.28 × 10−6 W and 5.68 × 10−6 W. As the solid phase concentration increases, the volume fraction of the solid phase distribution on the component wall also gradually rises. These findings provide valuable insights for enhancing the accuracy of research on solid–liquid flow in centrifugal pumps.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
幸福果汁完成签到,获得积分10
1秒前
量子星尘发布了新的文献求助10
1秒前
谢谢谢谢谢谢谢谢完成签到 ,获得积分10
2秒前
Akim应助biofresh采纳,获得30
2秒前
长安发布了新的文献求助10
3秒前
4秒前
zzw完成签到,获得积分10
9秒前
Guochunbao完成签到,获得积分10
10秒前
哈哈哈完成签到 ,获得积分10
12秒前
科研通AI5应助蒋念寒采纳,获得10
12秒前
月亮褪色了完成签到 ,获得积分20
16秒前
萱棚完成签到 ,获得积分10
16秒前
17秒前
Cao完成签到 ,获得积分10
17秒前
ENG完成签到,获得积分10
19秒前
alick完成签到,获得积分10
21秒前
刘刘完成签到,获得积分10
22秒前
Tom完成签到,获得积分10
23秒前
Villanellel发布了新的文献求助10
24秒前
程艳完成签到 ,获得积分10
25秒前
MINGHUI完成签到,获得积分10
26秒前
26秒前
子车半烟完成签到,获得积分10
26秒前
28秒前
淳于安筠完成签到,获得积分10
28秒前
雨晴完成签到,获得积分10
31秒前
jbq发布了新的文献求助10
31秒前
joshar完成签到,获得积分10
31秒前
32秒前
量子星尘发布了新的文献求助10
34秒前
blueblue完成签到,获得积分10
36秒前
落后秋烟完成签到,获得积分10
38秒前
大橙子发布了新的文献求助10
39秒前
LMY完成签到 ,获得积分10
39秒前
Betty完成签到 ,获得积分10
39秒前
NexusExplorer应助jbq采纳,获得10
40秒前
渔渔完成签到 ,获得积分10
40秒前
41秒前
Tangyartie完成签到 ,获得积分10
41秒前
skbkbe完成签到 ,获得积分10
42秒前
高分求助中
【提示信息,请勿应助】关于scihub 10000
Les Mantodea de Guyane: Insecta, Polyneoptera [The Mantids of French Guiana] 3000
徐淮辽南地区新元古代叠层石及生物地层 3000
The Mother of All Tableaux: Order, Equivalence, and Geometry in the Large-scale Structure of Optimality Theory 3000
Handbook of Industrial Diamonds.Vol2 1100
Global Eyelash Assessment scale (GEA) 1000
Picture Books with Same-sex Parented Families: Unintentional Censorship 550
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 4038184
求助须知:如何正确求助?哪些是违规求助? 3575908
关于积分的说明 11373872
捐赠科研通 3305715
什么是DOI,文献DOI怎么找? 1819255
邀请新用户注册赠送积分活动 892662
科研通“疑难数据库(出版商)”最低求助积分说明 815022