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
Jay完成签到,获得积分10
刚刚
FashionBoy应助笑点低诗桃采纳,获得10
1秒前
1秒前
青柠完成签到,获得积分10
2秒前
258369发布了新的文献求助10
4秒前
Ava应助俏皮的白柏采纳,获得10
5秒前
James- LPY发布了新的文献求助10
6秒前
千余发布了新的文献求助10
9秒前
anan完成签到,获得积分10
9秒前
12秒前
12秒前
13秒前
14秒前
莹0000完成签到,获得积分10
15秒前
16秒前
YamDaamCaa应助科研通管家采纳,获得30
17秒前
YamDaamCaa应助科研通管家采纳,获得30
18秒前
桐桐应助科研通管家采纳,获得10
18秒前
18秒前
烟花应助科研通管家采纳,获得10
18秒前
星辰大海应助科研通管家采纳,获得10
18秒前
18秒前
moon发布了新的文献求助10
18秒前
幽默尔蓝发布了新的文献求助10
18秒前
默默的裘完成签到,获得积分10
20秒前
科研通AI2S应助liuzengzhang666采纳,获得10
21秒前
深情安青应助lll采纳,获得10
22秒前
闪闪完成签到,获得积分10
23秒前
AST灰烬发布了新的文献求助10
23秒前
24秒前
鲤跃发布了新的文献求助10
26秒前
27秒前
28秒前
情怀应助moon采纳,获得10
28秒前
28秒前
lll应助文件撤销了驳回
31秒前
31秒前
陈七七完成签到 ,获得积分10
32秒前
33秒前
34秒前
高分求助中
A new approach to the extrapolation of accelerated life test data 1000
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
‘Unruly’ Children: Historical Fieldnotes and Learning Morality in a Taiwan Village (New Departures in Anthropology) 400
Indomethacinのヒトにおける経皮吸収 400
Phylogenetic study of the order Polydesmida (Myriapoda: Diplopoda) 370
基于可调谐半导体激光吸收光谱技术泄漏气体检测系统的研究 350
Robot-supported joining of reinforcement textiles with one-sided sewing heads 320
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 3988868
求助须知:如何正确求助?哪些是违规求助? 3531255
关于积分的说明 11253071
捐赠科研通 3269858
什么是DOI,文献DOI怎么找? 1804822
邀请新用户注册赠送积分活动 881994
科研通“疑难数据库(出版商)”最低求助积分说明 809035