Liu Zhenji , Long Yangjuan , Li Junfeng , Liu Dongdong
{"title":"Analysis of three-dimensional cake thickness structure characteristics in a screen filter for drip irrigation based on the CFD‒DEM coupling method","authors":"Liu Zhenji , Long Yangjuan , Li Junfeng , Liu Dongdong","doi":"10.1016/j.biosystemseng.2024.11.017","DOIUrl":null,"url":null,"abstract":"<div><div>The three-dimensional filter cake structure is the focus of screen filter research. In order to explore the variation trend of filter cake thickness and thickness homogeneity under different inlet flow rates and different particle concentrations, the clogged mesh filters were studied by prototype and the CFD-DEM coupling experiment. The results showed that, as particle concentration increased, clogged filter cake thickness increased at first and dropped subsequently during the prototype experiment, which was determined by the number of particles per unit of time touching the screen and the particles of the force of interaction. Likewise, with an increasing inlet flow rate, the clogging cake thickness showed a slow decline and then tended to be stable during the prototype experiment, which was determined by the number of particles per unit of time touching the screen and the force of the flow field on the particles. The prototype experiment and simulation experiment showed the consistency of this trend. It was discovered that with the increase flow rate, the filter cake grade first increased then decreased after reaching a critical flow rate (160 m<sup>3</sup> h<sup>−1</sup>), and with the increase particle concentration the filter cake grade increased and then stabilised after reaching the saturation concentration (0.279 kg m<sup>−</sup>³). The best operating parameters were identified for filter functioning in actual irrigation based on the filter cake grade, to reduce clogging and simplifying future flushing.</div></div>","PeriodicalId":9173,"journal":{"name":"Biosystems Engineering","volume":"250 ","pages":"Pages 1-14"},"PeriodicalIF":4.4000,"publicationDate":"2024-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Biosystems Engineering","FirstCategoryId":"97","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1537511024002587","RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"AGRICULTURAL ENGINEERING","Score":null,"Total":0}
引用次数: 0
Abstract
The three-dimensional filter cake structure is the focus of screen filter research. In order to explore the variation trend of filter cake thickness and thickness homogeneity under different inlet flow rates and different particle concentrations, the clogged mesh filters were studied by prototype and the CFD-DEM coupling experiment. The results showed that, as particle concentration increased, clogged filter cake thickness increased at first and dropped subsequently during the prototype experiment, which was determined by the number of particles per unit of time touching the screen and the particles of the force of interaction. Likewise, with an increasing inlet flow rate, the clogging cake thickness showed a slow decline and then tended to be stable during the prototype experiment, which was determined by the number of particles per unit of time touching the screen and the force of the flow field on the particles. The prototype experiment and simulation experiment showed the consistency of this trend. It was discovered that with the increase flow rate, the filter cake grade first increased then decreased after reaching a critical flow rate (160 m3 h−1), and with the increase particle concentration the filter cake grade increased and then stabilised after reaching the saturation concentration (0.279 kg m−³). The best operating parameters were identified for filter functioning in actual irrigation based on the filter cake grade, to reduce clogging and simplifying future flushing.
期刊介绍:
Biosystems Engineering publishes research in engineering and the physical sciences that represent advances in understanding or modelling of the performance of biological systems for sustainable developments in land use and the environment, agriculture and amenity, bioproduction processes and the food chain. The subject matter of the journal reflects the wide range and interdisciplinary nature of research in engineering for biological systems.