{"title":"基于工业散装物料输送过程的移动尘源粉尘逃逸特性研究","authors":"Hongfa Sun, Zhengyu Li, Jibo Long, Fang Ruan","doi":"10.1007/s10035-024-01399-2","DOIUrl":null,"url":null,"abstract":"<div><p>The process of transferring and conveying bulk materials are common in industrial production, and the dust pollution is a problem of mobile dust sources due to the velocity of the dust source. Firstly, a physical model of mobile dust sources is established. Secondly, the accuracy of the pollution model is verified by the existing experimental data. Finally, the effects of dust source velocity, wind velocity and particle diameter on dust fugacity are analysed. The results show that the wind velocity has the greatest influence on dust diffusion, especially the wind velocity of 3 m/s; The influence of different dust source velocity on the spatial distribution of dust concentration mainly exists in the area near the mobile surface; For dust diameter less than 10μm, the diameter has little effect on dust diffusion. In order to describe the dust pollution situation, the dust initiation rate was defined to evaluate the dust intensity of each condition. The biggest influence is wind velocity. When the wind velocity is 0.5 m/s, the dust initiation rate is only 2.5 × 10<sup>−5</sup> s<sup>−1</sup>. When the wind velocity reaches 10 m/s, the dust initiation rate is 1.5 × 10<sup>−4</sup> s<sup>−1</sup>. The dust initiation rate increases with the velocity of mobile dust source. The results can provide theoretical basis for dust pollution control in the process of transporting industrial bulk materials.</p><h3>Graphic abstract</h3>\n<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":49323,"journal":{"name":"Granular Matter","volume":"26 2","pages":""},"PeriodicalIF":2.4000,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Research on dust fugitive characteristics of mobile dust sources based on industrial bulk material transfer process\",\"authors\":\"Hongfa Sun, Zhengyu Li, Jibo Long, Fang Ruan\",\"doi\":\"10.1007/s10035-024-01399-2\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>The process of transferring and conveying bulk materials are common in industrial production, and the dust pollution is a problem of mobile dust sources due to the velocity of the dust source. Firstly, a physical model of mobile dust sources is established. Secondly, the accuracy of the pollution model is verified by the existing experimental data. Finally, the effects of dust source velocity, wind velocity and particle diameter on dust fugacity are analysed. The results show that the wind velocity has the greatest influence on dust diffusion, especially the wind velocity of 3 m/s; The influence of different dust source velocity on the spatial distribution of dust concentration mainly exists in the area near the mobile surface; For dust diameter less than 10μm, the diameter has little effect on dust diffusion. In order to describe the dust pollution situation, the dust initiation rate was defined to evaluate the dust intensity of each condition. The biggest influence is wind velocity. When the wind velocity is 0.5 m/s, the dust initiation rate is only 2.5 × 10<sup>−5</sup> s<sup>−1</sup>. When the wind velocity reaches 10 m/s, the dust initiation rate is 1.5 × 10<sup>−4</sup> s<sup>−1</sup>. The dust initiation rate increases with the velocity of mobile dust source. The results can provide theoretical basis for dust pollution control in the process of transporting industrial bulk materials.</p><h3>Graphic abstract</h3>\\n<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>\",\"PeriodicalId\":49323,\"journal\":{\"name\":\"Granular Matter\",\"volume\":\"26 2\",\"pages\":\"\"},\"PeriodicalIF\":2.4000,\"publicationDate\":\"2024-03-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Granular Matter\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s10035-024-01399-2\",\"RegionNum\":3,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Granular Matter","FirstCategoryId":"5","ListUrlMain":"https://link.springer.com/article/10.1007/s10035-024-01399-2","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
摘要
在工业生产中，散装物料的转运和输送过程十分常见，由于粉尘源的速度问题，粉尘污染是移动粉尘源的问题。首先，建立了移动尘源的物理模型。其次，通过现有实验数据验证了污染模型的准确性。最后，分析了尘源速度、风速和颗粒直径对粉尘逸散性的影响。结果表明，风速对粉尘扩散的影响最大，尤其是 3 m/s 的风速；不同尘源速度对粉尘浓度空间分布的影响主要存在于移动面附近区域；对于直径小于 10μm 的粉尘，直径对粉尘扩散的影响很小。为了描述粉尘污染情况，定义了粉尘起尘率，以评价各种条件下的粉尘强度。影响最大的是风速。当风速为 0.5 m/s 时，扬尘起始率仅为 2.5 × 10-5 s-1。当风速达到 10 m/s 时，起尘率为 1.5 × 10-4 s-1。起尘速率随移动尘源速度的增加而增加。该结果可为工业散装物料运输过程中的粉尘污染控制提供理论依据。
Research on dust fugitive characteristics of mobile dust sources based on industrial bulk material transfer process
The process of transferring and conveying bulk materials are common in industrial production, and the dust pollution is a problem of mobile dust sources due to the velocity of the dust source. Firstly, a physical model of mobile dust sources is established. Secondly, the accuracy of the pollution model is verified by the existing experimental data. Finally, the effects of dust source velocity, wind velocity and particle diameter on dust fugacity are analysed. The results show that the wind velocity has the greatest influence on dust diffusion, especially the wind velocity of 3 m/s; The influence of different dust source velocity on the spatial distribution of dust concentration mainly exists in the area near the mobile surface; For dust diameter less than 10μm, the diameter has little effect on dust diffusion. In order to describe the dust pollution situation, the dust initiation rate was defined to evaluate the dust intensity of each condition. The biggest influence is wind velocity. When the wind velocity is 0.5 m/s, the dust initiation rate is only 2.5 × 10−5 s−1. When the wind velocity reaches 10 m/s, the dust initiation rate is 1.5 × 10−4 s−1. The dust initiation rate increases with the velocity of mobile dust source. The results can provide theoretical basis for dust pollution control in the process of transporting industrial bulk materials.
期刊介绍：
Although many phenomena observed in granular materials are still not yet fully understood, important contributions have been made to further our understanding using modern tools from statistical mechanics, micro-mechanics, and computational science.
These modern tools apply to disordered systems, phase transitions, instabilities or intermittent behavior and the performance of discrete particle simulations.
>> Until now, however, many of these results were only to be found scattered throughout the literature. Physicists are often unaware of the theories and results published by engineers or other fields - and vice versa.
The journal Granular Matter thus serves as an interdisciplinary platform of communication among researchers of various disciplines who are involved in the basic research on granular media. It helps to establish a common language and gather articles under one single roof that up to now have been spread over many journals in a variety of fields. Notwithstanding, highly applied or technical work is beyond the scope of this journal.
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