天津工业大学学报2018，Vol.37Issue(1)：68-73,6.DOI:10.3969/j.issn.1671-024x.2018.01.012
基于CFD灌溉机井管道液相流场的数值模拟
Numerical simulation of irrigation well pipeline liquid flow based on CFD
摘要
Abstract
To improve the accuracy of the Jet lag ultrasonic flowmeter for the agricultural irrigation,the continuous flow field within pipeline of irrigation well is simulated with the standard k-ε model in Fluent software, the pressure nephogram and the velocity distribution in horizontal and vertical cross-section are observed to analyze the characteristic of fluid velocity distribution in pipeline.The average velocity correction formula of the pipeline is established and proved by the experiment.The results show that the pipe flow field is disturbed by the secondary flow of elbow,the velocity distribution of each section is obviously different and the measuring accuracy of the meter is reduced.After velocity correction,the measurement accuracy of the meter increases by 4.9%.关键词
CFD数值模拟/灌溉机井管道/弯管二次流/液体流场/标准k-ε模型/流速修正Key words
CFD numerical simulation/irrigation well pipeline/secondary flow of elbow/liquid flow/standard k-ε mod-el/velocity correction分类
通用工业技术引用本文复制引用
王萍,杨超..基于CFD灌溉机井管道液相流场的数值模拟[J].天津工业大学学报,2018,37(1):68-73,6.基金项目
国家自然科学基金资助面上项目(61372011) （61372011）
国家高技术研究发展计划(863计划)资助项目(2014AA093403) （863计划）
